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Aluminum stitch-n-glue
Awhile back, there was a thread concerning stitch-n-glue using aluminum
rather than plywood. Although I do not believe it could be a high enough quality solution to boat building, having a hard time believing in the reliability of the epoxy bond and believing that welding is just as easy if not easier, it is an interesting topic that I'd like to read about. Meindert, and maybe others (?), mentioned knowing of aluminum/epoxy projects going on. Does anybody have a link on the web that I can go check out? The only link I had before is long gone, or at least I can't find it ...anyone? Have you seen any of this on the web? Thanks, Brian |
Aluminum stitch-n-glue
"Brian D" wrote in message
news:obR5c.27221$JL2.316008@attbi_s03... Awhile back, there was a thread concerning stitch-n-glue using aluminum rather than plywood. Although I do not believe it could be a high enough quality solution to boat building, having a hard time believing in the reliability of the epoxy bond and believing that welding is just as easy if not easier, it is an interesting topic that I'd like to read about. Meindert, and maybe others (?), mentioned knowing of aluminum/epoxy projects going on. Does anybody have a link on the web that I can go check out? The only link I had before is long gone, or at least I can't find it ....anyone? Have you seen any of this on the web? Hi Brian, I think I referred to the Pinical system, where aluminum profiles are bent into shape and connected together with a nifty flange-like system. The profiles are riveted together and the seams are filled with an epoxy resin. See www.pinical.com for details. Regards, Meindert |
Aluminum stitch-n-glue
Awhile back, there was a thread concerning stitch-n-glue using aluminum rather than plywood. Although I do not believe it could be a high enough quality solution to boat building, having a hard time believing in the reliability of the epoxy bond and believing that welding is just as easy if not easier, it is an interesting topic that I'd like to read about. I am interested in the subject, only for curiosity reasons, but I am interested... I have made some google search on the aluminium-epoxy subject. I try to explain what i have found: -Direct use of epoxy on Al don't work, mainly because Al is covered by Al oxide, and epoxy don't make reliable connections to the oxide layer. -epoxy and Al are usend for airplanes on a regular basis. To overcome the oxide problem, the Al is treated with some chemical primers (sorry, forgotten what) that replaces the oxide with something more reliable. The use of the proper primer make structural gluing of Al feasible and reliable (at least for planes...) -It exist one alternate method for structural gluing of Al, that looks feasible for "normal" homebuilder -Epoxy glued Al isn't used (for what I know...) in ship building. It must be a reason for that, but i don't know it... Anyone know one explanation? I am curious. I was thinking that one Al lapstrake hull would be one interesting solution (maybe also appealing?) for one homebuit epoxy glued Al boat... Panels hare simple, no special machines is required, the glue surface is large... Paolo From Pisa, Italy |
Aluminum stitch-n-glue
Hi
"Paolo Zini" skrev i en meddelelse ... -Direct use of epoxy on Al don't work, mainly because Al is covered by Al oxide, and epoxy don't make reliable connections to the oxide layer. Exactly , maby behind your desk but hands-on experience will soon show, that Sicaflex is a far better option a much more flexible glue and a realistic thing you know if you ever tried building composite hulls. But this is not the issue in this fora, experience about unfolded panels can be found as early as Cyber-Boat, where you will se a few composite projects done in real and not just for the fancy project but for the exiting options that computers offer. If you want to make the issue an interesting one, sketch a river boat and omit the old crafts or make a fool out of those who caturly can build a boat, join up with the useal crowd of jokers and make usenet what it alway's was made for, throwing dirt and in particular in a way where you can laugh the bottom out your pans ,without knowing a clue about the issue. P.C. |
Aluminum stitch-n-glue
There was an article in this month's issue of Epoxyworks sent out by
Gougeon Bros. about adhesion of epoxy to various metals. I don't have the article in front of me but I seem to remember that Aluminum had the lowest adhesion strength of all the metals tested. You can contact them and they will send a free subscription to you (I think) if you don't get it already. My guess is that epoxy would not work for this because of the expansion of the metal and the oxide problem mentioned. I could be wrong. Brian D wrote: Awhile back, there was a thread concerning stitch-n-glue using aluminum rather than plywood. Although I do not believe it could be a high enough quality solution to boat building, having a hard time believing in the reliability of the epoxy bond and believing that welding is just as easy if not easier, it is an interesting topic that I'd like to read about. Meindert, and maybe others (?), mentioned knowing of aluminum/epoxy projects going on. Does anybody have a link on the web that I can go check out? The only link I had before is long gone, or at least I can't find it ...anyone? Have you seen any of this on the web? Thanks, Brian |
Aluminum stitch-n-glue
"P.C." wrote in message ...
Hi "Paolo Zini" skrev i en meddelelse ... -Direct use of epoxy on Al don't work, mainly because Al is covered by Al oxide, and epoxy don't make reliable connections to the oxide layer. Exactly , maby behind your desk but hands-on experience will soon show, that Sicaflex is a far better option a much more flexible glue and a realistic thing you know if you ever tried building composite hulls. But this is not the issue in this fora, experience about unfolded panels can be found as early as Cyber-Boat, where you will se a few composite projects done in real and not just for the fancy project but for the exiting options that computers offer. If you want to make the issue an interesting one, sketch a river boat and omit the old crafts or make a fool out of those who caturly can build a boat, join up with the useal crowd of jokers and make usenet what it alway's was made for, throwing dirt and in particular in a way where you can laugh the bottom out your pans ,without knowing a clue about the issue. P.C. You narrow minded idiot, don't you ever give up? |
Aluminum stitch-n-glue
Scotty,
I have two r.b.b "contributors" in my kill file ...JAZ and guess who? Works for me. Brian "Backyard Renegade" wrote in message om... "P.C." wrote in message ... Hi "Paolo Zini" skrev i en meddelelse ... -Direct use of epoxy on Al don't work, mainly because Al is covered by Al oxide, and epoxy don't make reliable connections to the oxide layer. Exactly , maby behind your desk but hands-on experience will soon show, that Sicaflex is a far better option a much more flexible glue and a realistic thing you know if you ever tried building composite hulls. But this is not the issue in this fora, experience about unfolded panels can be found as early as Cyber-Boat, where you will se a few composite projects done in real and not just for the fancy project but for the exiting options that computers offer. If you want to make the issue an interesting one, sketch a river boat and omit the old crafts or make a fool out of those who caturly can build a boat, join up with the useal crowd of jokers and make usenet what it alway's was made for, throwing dirt and in particular in a way where you can laugh the bottom out your pans ,without knowing a clue about the issue. P.C. You narrow minded idiot, don't you ever give up? |
Aluminum stitch-n-glue
On Wed, 17 Mar 2004 11:12:25 +0100, "P.C."
vaguely proposed a theory .......and in reply I say!: remove ns from my header address to reply via email PC. Do you have _pictures_ (not "PC" generated images) of boats using your methods? But this is not the issue in this fora, experience about unfolded panels can be found as early as Cyber-Boat, where you will se a few composite projects done in real and not just for the fancy project but for the exiting options that computers offer. ************************************************** ** sorry ..........no I'm not! remove ns from my header address to reply via email Does Bill Gates dream of electronic sheep? |
Aluminum stitch-n-glue
I've used West System on two low tech repairs on aluminum (both cast)..one
was a part from an excercycle and the other the low side AC fitting on my mom's 84 buick. I used the two part cleaning system from west and both repairs held for years...the buick went to bone yard with it intact and the exercycle is still in use...the one on the buick ac fitting saved me lots of work and some bucks..the excercycle some bucks.....I still have the stuff on the shelf and will continue to use it for non critical stuff..don't know if I wanna build a boat with it...or an airplane, but I've heard it's been used there (planes). DonE "Backyard Renegade" wrote in message om... "P.C." wrote in message ... Hi "Paolo Zini" skrev i en meddelelse ... -Direct use of epoxy on Al don't work, mainly because Al is covered by Al oxide, and epoxy don't make reliable connections to the oxide layer. Exactly , maby behind your desk but hands-on experience will soon show, that Sicaflex is a far better option a much more flexible glue and a realistic thing you know if you ever tried building composite hulls. But this is not the issue in this fora, experience about unfolded panels can be found as early as Cyber-Boat, where you will se a few composite projects done in real and not just for the fancy project but for the exiting options that computers offer. If you want to make the issue an interesting one, sketch a river boat and omit the old crafts or make a fool out of those who caturly can build a boat, join up with the useal crowd of jokers and make usenet what it alway's was made for, throwing dirt and in particular in a way where you can laugh the bottom out your pans ,without knowing a clue about the issue. P.C. You narrow minded idiot, don't you ever give up? |
Aluminum stitch-n-glue
Hi
"Old Nick" skrev i en meddelelse ... On Wed, 17 Mar 2004 11:12:25 +0100, "P.C." vaguely proposed a theory ......and in reply I say!: remove ns from my header address to reply via email PC. Do you have _pictures_ (not "PC" generated images) of boats using your methods? Plenty , ------- you find a lot on the old Cyber-Boat site, acturly Cyber-Boat was the first to interduce the idear of unfolded panels done with unfolding software and many boats been build . But in this group, a lot of flatbotom boat fanatics will rather have amatures to project a fantasy boat , and you can soon se how this group is used to shrow dirt on the old tradisional boatbuilding craft. You se when you read hatefull mails about Cyber-Boat, you must remember that Cyber-Boat do not provide flat bottomed boats, and this fact some old dryass use to earn money making this group into a hate place against the original tradisional small woodboating carafs -------- I am acturly a boatbiolder and acturly teached apprentish in the arts of CAD, but I fully understand the ones who make money on what they can, and that they use hate against anyone offering somthing better and genuine, ------- and free . Check out the old Cyber-Boat site, and you know why ; http://w1.1396.telia.com/~u139600113/ A few jokers and dryasses don't like what they se, and think that dirt and foul words can replace good craftmanship, ------- I make it up to be your choice, do you want bad designs and fiddeling craftmanship with nasty words it's your choice, I offer another choice and I do not make any money on it. P.C. http://home20.inet.tele.dk/h-3d/ |
Aluminum stitch-n-glue
Hi
"Backyard Renegade" skrev i en meddelelse om... You narrow minded idiot, don't you ever give up? Give up the good craftmanship, a life experience in boatbuilding, carpentry and computer programming ? For what ------- fiddeling amature design and discussing with jeloux amatures that start asking tolerence and end up throwing dirt and posting unsafe designs being a serious safety risk for your kids ? Putting cheap nails in end wood ,plastering with a patch of the cheapest cloth and the cheapest polyester, now the best epoxy is to expensive for somone who want to advise others ? Listen ------- 25 years ago I build my first boat, the first one where I made my own plans and the first one where I placed each rivit and cut each plank, from drawings made with the first plotter I had, feed with the unfolding software I wrote myself. Then you jokers came around, and you sataret to throw dirt and make the bad air, -------- nice result but as you know, dryass jokers behind their office desk, make no visions make nothing but evil and hate and then you ask tolerence. ------- When you replaced all decent craftmanship with ashes from hell ,don't ask for beauty and decency, don't expect happiness for the money you made. As if your drive is hate and throwing dirt is what you want this group to deal with, you already done so a few years , ------- did it bring you any happiness to trow dirt, did you expect so. P.C. http://w1.1396.telia.com/~u139600113/ |
Aluminum stitch-n-glue
Hi
"steveJ" skrev i en meddelelse ... There was an article in this month's issue of Epoxyworks sent out by Gougeon Bros. about adhesion of epoxy to various metals. I don't have the article in front of me but I seem to remember that Aluminum had the lowest adhesion strength of all the metals tested. You can contact them and they will send a free subscription to you (I think) if you don't get it already. My guess is that epoxy would not work for this because of the expansion of the metal and the oxide problem mentioned. I could be wrong. No , -------- but there are several other way's to make Alu go together beside designing the hull so it don't even matter if the water enter inbetween the two hulls forming the inner and outher hull , ------- esp. if the space inbetween is foam filled or filled with a mix of emty polystyrene bottles and foam. Sicaflex , even a foul word in this group , oposed allmighty epoxy, is acturly a relevant choice, offering a glue that last decades at the same time not being as hard as the epoxy. Beside when you need to be an aircarft engineer to make an amature design go together , I don't think special coating shuld be the issue. Esp. when the halve problem is a design issue . Beside there are plenty of way's , like the Alu solder that can be found with Google , rivets that surely ask a bit craftman but go in many different types. Check the design "Dizzie" at the old Cyber-Boat site, ------- top plank is Alu that I had to weld to lenghten , but that is simply copper rivited onto the tradisional lapstrake planking, beside when you check that design, check the detail about both front and aft end made in Alu, ready to bolt planks onto so you can build a well documented design being an amature. Still the Alu ends are expensive, so with Cyber-Boat I made a special "sandwich pattern" that help the builder by offering a very smart template for the mirrors of a pram or dinghie, -------- beside the full-scale unfolded planks that is. http://w1.1396.telia.com/~u139600113/ P.C. |
Aluminum stitch-n-glue
On Thu, 18 Mar 2004 13:50:19 +0100, "P.C."
vaguely proposed a theory .......and in reply I say!: remove ns from my header address to reply via email Hi "Old Nick" skrev i en meddelelse .. . On Wed, 17 Mar 2004 11:12:25 +0100, "P.C." vaguely proposed a theory ......and in reply I say!: remove ns from my header address to reply via email PC. Do you have _pictures_ (not "PC" generated images) of boats using your methods? Plenty , ------- you find a lot on the old Cyber-Boat site, acturly Cyber-Boat was the first to interduce the idear of unfolded panels done with unfolding software and many boats been build . So why not now? Include them _with_ the popular versions surely? What sort of boats? Why are there no places where they can be seen as photos? ************************************************** ** sorry ..........no I'm not! remove ns from my header address to reply via email Does Bill Gates dream of electronic sheep? |
Aluminum stitch-n-glue
On Thu, 18 Mar 2004 14:05:17 +0100, "P.C."
vaguely proposed a theory .......and in reply I say!: remove ns from my header address to reply via email OK. I close dialogue. I think you went over the edge (possibly of a flat earth) somewhere. ************************************************** ** sorry ..........no I'm not! remove ns from my header address to reply via email Does Bill Gates dream of electronic sheep? |
Aluminum stitch-n-glue
"P.C." wrote in message ...
Hi "Backyard Renegade" skrev i en meddelelse om... You narrow minded idiot, don't you ever give up? Give up the good craftmanship, a life experience in boatbuilding, carpentry and computer programming ? For what ------- fiddeling amature design and discussing with jeloux amatures that start asking tolerence and end up throwing dirt and posting unsafe designs being a serious safety risk for your kids ? You have been asked before to show an example of this, just one, you refuse. I would suggest you have no example, you are just bending the facts to try to make a point. Putting cheap nails in end wood ,plastering with a patch of the cheapest cloth and the cheapest polyester, now the best epoxy is to expensive for somone who want to advise others ? You again have absolutly no basis for this comment, again you are being dishonest .. Listen ------- 25 years ago I build my first boat, the first one where I made my own plans and the first one where I placed each rivit and cut each plank, from drawings made with the first plotter I had, feed with the unfolding software I wrote myself. So what, I drew my first in the dirt and built around that, built 50 since, how many did you say you have built. I know you will tapdance around that question seems you want us to build them for you. Then you jokers came around, and you sataret to throw dirt and make the bad air, -------- nice result but as you know, dryass jokers behind their office desk, make no visions make nothing but evil and hate and then you ask tolerence. Man, next time you get to the local coffee shop, try an indica strain, less paranoia;) Fact is you, as many times before, were the first to come into this thread with your insults toward many of the builders here. Read your own words asswipe: SNIPAnd you should also understand that this has not always been the case. I have emails from years ago when PC approached me to sell his cartoons here in the US, when I turned him down is when he started making innacurate accusations about anyone here who does not like his work. /SNIP ------- When you replaced all decent craftmanship with ashes from hell ,don't ask for beauty and decency, don't expect happiness for the money you made. As if your drive is hate and throwing dirt is what you want this group to deal with, you already done so a few years , I have and will always pipe in when you make unprovoked attacks at Me, or my friends as you have done with Payson and others who either don't do internet, or are dead. You know as well as I that you only took a bad attitude with me when after some negotiation, I turned you down for a partnership here in the US so you could have a state side marketing person for your internet cartoons. That's a fact asswipe, and you know it. ------- did it bring you any happiness to trow dirt, did you expect so. No, it did not. But since I have spent so much time on this, maybe I can at least have one question answered for me by my peers. Is this guy what we over here in cowboy land would refer to as "eurotrash" or would that require more of a pedigree and a French accent? Later Per, your idea sucks, admit it dude, get a job... P.C. |
Aluminum stitch-n-glue
ooops, quoted the wrong thing, it is late. Here is the way PC
introduced himself to this thread:: SNIPIf you want to make the issue an interesting one, sketch a river boat and omit the old crafts or make a fool out of those who caturly can build a boat, join up with the useal crowd of jokers and make usenet what it alway's was made for, throwing dirt and in particular in a way where you can laugh the bottom out your pans ,without knowing a clue about the issue. P.C. ENDSNIP This is typical of his arrogant diatribe, with no basis in fact... |
Aluminum stitch-n-glue
"Backyard Renegade" skrev i en meddelelse om... "P.C." wrote in message ... , you are just bending the facts to try to make a point. What point is that, ------ that you obviously think you own this group, takl about buisness relations that sound a bit silli, while Cyber-Boat is free-Download and the Usenet do not just cover one contry but the whole world. Why shuld I btw fight flat bottomed designs some amature produced behind his office desk, the real test shuldn't even be needed when you know the trouble getting the pieces together everyone shuld know what safety that attitude bring. Putting cheap nails in end wood ,plastering with a patch of the cheapest cloth and the cheapest polyester, now the best epoxy is to expensive for somone who want to advise others ? You again have absolutly no basis for this comment, again you are being dishonest , ------- you are quite right that honesty is a part of this, honesty about how you got the knowleage to advise and honesty about the buisness this fora turned into, for those offering plans. Ofcaurse you don't like the fact that Cyber-Boat is free download, but fact is that the reson they became that, was the useal crowd in this group that at that time also protected Bolgers and simular against the tradisional craftmanship and educated advices I alway's standed for. How do you explain what you say about me getting into the american marked, when everything I offer is free download ? . Listen ------- 25 years ago I build my first boat, the first one where I made my own plans and the first one where I placed each rivit and cut each plank, from drawings made with the first plotter I had, feed with the unfolding software I wrote myself. So what, I drew my first in the dirt and built around that, built 50 since, how many did you say you have built. I know you will tapdance around that question seems you want us to build them for you. Well don't that depend What you draw, and what you builded. For my part I bilded Lapstrake without the need of Epoxy, but surely I used Epoxy being the best thing that happened for tradisional boatbuilding since they invented the bucked . Then you jokers came around, and you sataret to throw dirt and make the bad air, -------- nice result but as you know, dryass jokers behind their office desk, make no visions make nothing but evil and hate and then you ask tolerence. Man, next time you get to the local coffee shop, try an indica strain, less paranoia;) Fact is you, as many times before, were the first to come into this thread with your insults toward many of the builders here. Read your own words asswipe: On your heels -------- no one shuld be allowed to give out advices that make a fool of the usenet user that belive he get the best advise, but is left with a heap of scrap that police shuld take in and protect the public against. The only ones that find this funny, is the same crowd of dryass jokers, that is ancious to make some poor fool test out their next scrippled down fantasy boat. Cyber-Boat never provided that, but is based on quite different qualities.; http://groups.yahoo.com/group/Cyber-Boat/ Beside Cyber-Boat was the first to interduce panels unfolded from a 3D model, and a lot of other innovative gadgeds is found in the concept, but you jokers years ago did your best to make this group into a place where the tradisional wooden boat, the okd proud crafts , is made fool of if it is a tread agaist your flatbottom boatplan sales..------- You can't compeed with quality, and replace that with dirt throwing and foul words. P,C. SNIPAnd you should also understand that this has not always been the case. I have emails from years ago when PC approached me to sell his cartoons here in the US, when I turned him down is when he started making innacurate accusations about anyone here who does not like his work. /SNIP ------- When you replaced all decent craftmanship with ashes from hell ,don't ask for beauty and decency, don't expect happiness for the money you made. As if your drive is hate and throwing dirt is what you want this group to deal with, you already done so a few years , I have and will always pipe in when you make unprovoked attacks at Me, or my friends as you have done with Payson and others who either don't do internet, or are dead. You know as well as I that you only took a bad attitude with me when after some negotiation, I turned you down for a partnership here in the US so you could have a state side marketing person for your internet cartoons. That's a fact asswipe, and you know it. ------- did it bring you any happiness to trow dirt, did you expect so. No, it did not. But since I have spent so much time on this, maybe I can at least have one question answered for me by my peers. Is this guy what we over here in cowboy land would refer to as "eurotrash" or would that require more of a pedigree and a French accent? Later Per, your idea sucks, admit it dude, get a job... P.C. |
Aluminum stitch-n-glue
Hi
"Old Nick" skrev i en meddelelse ... So why not now? Include them _with_ the popular versions surely? What sort of boats? Why are there no places where they can be seen as photos? At the link ;' http://groups.yahoo.com/group/Cyber-Boat/ You se the remains of Cyber-Boat, that site acturly show a few nice foto's , but you se even you build a heap of small boats this don't mean that you tread each one as a piece of art beside if you just check the response in this group, some of the jokers would soon find this as a caurse to throw more dirt. Do a carpenter take a picture of each window he put in ? ------- Well why shuld I place more foto's on a site that from the start had a crowd of critics. that NEVER slowed down looking into each word, each picture any bright idear, to perform the best trict they themself can perform. Listen --------- Im'e just a poor danish boatbuilder that spend 24 hours a day being there for my family and one of my children being within the Autistic specter, and the fight for his right is far vorse than the dirt thowing here. Sure it would have been nice 12 years ago, to be able to make a living on the skills I gathered in terms of crafts and computers, ------- but look at this fora and the old dryass responses for every time you publish a new bright idear ; it hurt somone when guy's like me prove their ability and their campains aganist tradisional crafts and new smart methods do not profit my youngest son or the bad economy it is, when you have a crowd of fiddeling dryasses against all you stand for. Check this site for the pictures you ask ; http://groups.yahoo.com/group/Cyber-Boat/ P.C. |
Aluminum stitch-n-glue
"Brian D" ha scritto nel messaggio news:obR5c.27221$JL2.316008@attbi_s03... Awhile back, there was a thread concerning stitch-n-glue using aluminum rather than plywood. Although I do not believe it could be a high enough quality solution to boat building, ........ It looks that the flame with P.C. have changed the course of the thread from the original subject... I am still interested on it (I mean to the original subject....). Any more info? Paolo P.S For P.C.: I WILL NOT REPLAY to any comments, flame or anything else from you. You have been associated to my killfile. |
Aluminum stitch-n-glue
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Aluminum stitch-n-glue
Backyard Renegade wrote:
ooops, quoted the wrong thing, it is late. Here is the way PC introduced himself to this thread:: SNIPIf you want to make the issue an interesting one, sketch a river boat and omit the old crafts or make a fool out of those who caturly can build a boat, join up with the useal crowd of jokers and make usenet what it alway's was made for, throwing dirt and in particular in a way where you can laugh the bottom out your pans ,without knowing a clue about the issue. P.C. ENDSNIP This is typical of his arrogant diatribe, with no basis in fact... Some people think the net is real life. Sad, but true... |
Aluminum stitch-n-glue
Rick Tyler wrote in message . ..
On 18 Mar 2004 22:46:17 -0800, (Backyard Renegade) wrote: snip I have and will always pipe in when you make unprovoked attacks at Me, or my friends as you have done with Payson and others who either don't do internet, or are dead. snip Not my fight, but I would like to add that, as far as I know, Mr. Payson is in the "alive but doesn't do the Internet" category, not the "dead" category. - Rick You are quite right, however PC has also attacked John Gardner, died in 96 if I remember correctly. Don't worry, I am done with this guy. You all can read his spam if you want, I got boats to build... |
Aluminum stitch-n-glue
On Fri, 19 Mar 2004 16:18:54 GMT, Richard Lamb
vaguely proposed a theory .......and in reply I say!: remove ns from my header address to reply via email It's probably just as well that it's not....yet. One day, when the Net can be used to control your house, somebody will simply turn on somebody else's gas stove, wait a while then blow their house up! G Some people think the net is real life. Sad, but true... ************************************************** ** sorry ..........no I'm not! remove ns from my header address to reply via email Does Bill Gates dream of electronic sheep? |
Aluminum stitch-n-glue
I've had good luck with epoxy on aluminum in non-structural applications:
Wet-sand the aluminum - keeping a film of resin on the sander and the surface. You then can mix the epoxy at your convenience, and work it into the rough, wet aluminum. Your grinder / sander gets a bit messy, but the unmixed resin cleans up OK with acetone. I did this, adhering "skid plates" to the bottom of a wood/epoxy hull. A couple years hard use, and still firmly attached. I have NOT had success with 3M 5200; the manufacturer refused to supply info on surface prep, saying they don't teach people how to build boats... Wood gunwales applied to an aluminum hull peeled right off, but only prep was a light sanding. As to "stitch and glue", I'd be inclined to "stitch and weld" with aluminum. I did a dory (Bolger Teal) as a test of concept, and it's completely indestructible and maintenance free. A bit heavy (1/8 aluminum weighs about the same as unfinished 3/4" ply) but tough. "Paolo Zini" wrote in message ... "Brian D" ha scritto nel messaggio news:obR5c.27221$JL2.316008@attbi_s03... Awhile back, there was a thread concerning stitch-n-glue using aluminum rather than plywood. Although I do not believe it could be a high enough quality solution to boat building, ....... It looks that the flame with P.C. have changed the course of the thread from the original subject... I am still interested on it (I mean to the original subject....). Any more info? |
Aluminum stitch-n-glue
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Aluminum stitch-n-glue
I know that aluminium can be glued, used epoxy, with very good results.
Forty years ago, an aircraft company in the Netherlands, Fokker, was already using epoxy glued joints in their aircraft. I had a plane with a lot of glue bonds in it (Grumman) and put over 500 hrs on it with no problems. they had a glued honeycomb type side pannel that was very tough as well as wing covers. No idea what adhesive they used but it was way back when. Greg Sefton |
Aluminum stitch-n-glue
I've had good luck with epoxy on aluminum in non-structural applications: Wet-sand the aluminum - keeping a film of resin on the sander and the surface. You then can mix the epoxy at your convenience, and work it into the rough, wet aluminum. Your grinder / sander gets a bit messy, but the unmixed resin cleans up OK with acetone. I did this, adhering "skid plates" to the bottom of a wood/epoxy hull. A couple years hard use, and still firmly attached. Great! I have read about your method, but yours is the first info about it's succesful use. You don't consider your application as structural, but is anyway one hard test! I have NOT had success with 3M 5200; the manufacturer refused to supply info on surface prep, saying they don't teach people how to build boats... Wood Also this is one valuable info. Paolo |
Aluminum stitch-n-glue
Great! I have read about your method, but yours is the first info about it's succesful use. You don't consider your application as structural, but is anyway one hard test! I have NOT had success with 3M 5200; the manufacturer refused to supply info on surface prep, saying they don't teach people how to build boats... Wood Also this is one valuable info. Paolo Funny, I had the same reaction from 3M when I asked them about using the product for boats several years ago. I had not used it before then, and have not had need since ;). Scotty |
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