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#1
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"jotis" wrote in message ...
Hello Jim- Thank you for your very interesting analysis of why it is so difficult to get much information about cold-molding; it looks like it has become obsolete. Nevertheless, the process appears to be so fascinating that I hate to discard the idea altogether. Frankly, one of the benefits that I perceived with cold-molding was that it would not require a skin of fiberglass (the very thought of which makes my skin quiver), but I am coming to realize that and education - and some experience with - fiberglass is becoming a necessity. Here is an area I can address in this thread... Oh goody! Anyway, this should not be a point of anxiety (sp?). With the Epoxy technology and calibrated pumps, this is only a question of patience and preperation. The main thing is to prepare the surface properly first. Then cut out your fiberglass, leaving a couple of inches extra all the way around. Next roll up one side of the glass and spread a slightly thickened layer of epoxy in it's place (this can be done easily with a disposable paint roller). Next roll the glass back over the wet area, and start to wet out the glass with the same paint roller and a unthickened layer of epoxy. Next, roll up the other side of the glass, and do the same thing. Remember, it is a lot easier to draw goo up through glass than it is to drive it down in. Typically, I apply probably 75% of the goo I will use in an area, before the fabric is laid down, then draw it up through the glass. This may seem elementry to some but I always mention it as it took me close to a year to figure this out, of course when I did, I felt like a real dolt ![]() Really, using pumps, paint rollers and proper preperation, glassing a small hull can actually be one of the easiest parts of building a boat. Did not say most fun, just easiest. Scotty from SmallBoats.com There is a good deal of information about strip planking around, and will reconsider that mode of construction. Thanks again, Joseph "Jim Conlin" wrote in message ... The veneer cold-molding process is well documented in the Gougeon book. (Western red) cedar veneer was the preferred material. Eventually, it was figured out that the addition of a light fiberglass skinn was needed to protect the soft cedar. The strip canoe folks figured out that if there was a structural glass skin on both sides, multiple layers of wood core weren't necessary and the skins gave adequate 'thwartship strength. So, for boats under thirty feet, cold-molding with veneers has been largely replaced by strip composite construction. Less labor, cheaper materials, equal product. That's why it's now hard to find cedar veneers. |
#2
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Hello Scotty-
Many thanks for the clearly expressed information. I hope it really is as easy as you make it out to be. Regards, Joseph Here is an area I can address in this thread... Oh goody! Anyway, this should not be a point of anxiety (sp?). With the Epoxy technology and calibrated pumps, this is only a question of patience and preperation. The main thing is to prepare the surface properly first. Then cut out your fiberglass, leaving a couple of inches extra all the way around. Next roll up one side of the glass and spread a slightly thickened layer of epoxy in it's place (this can be done easily with a disposable paint roller). Next roll the glass back over the wet area, and start to wet out the glass with the same paint roller and a unthickened layer of epoxy. Next, roll up the other side of the glass, and do the same thing. Remember, it is a lot easier to draw goo up through glass than it is to drive it down in. Typically, I apply probably 75% of the goo I will use in an area, before the fabric is laid down, then draw it up through the glass. This may seem elementry to some but I always mention it as it took me close to a year to figure this out, of course when I did, I felt like a real dolt ![]() Really, using pumps, paint rollers and proper preperation, glassing a small hull can actually be one of the easiest parts of building a boat. Did not say most fun, just easiest. Scotty from SmallBoats.com |
#3
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On Fri, 26 Dec 2003 14:46:43 -0500, "jotis"
wrote something .......and in reply I say!: Remember, it took that "dolt" a year to learn how! GG I would defintely "waste" some epoxy and glass on a sheet of ply (maybe it's a table for outdorrs or something, or nothing at all) and get good unpanicked results, before touching all those hours of work called a boat, stripper or cold moulded. Hello Scotty- Many thanks for the clearly expressed information. I hope it really is as easy as you make it out to be. Regards, Joseph ************************************************** ** sorry remove ns from my header address to reply via email I was frightened by the idea of a conspiracy that was causing it all. But then I was terrified that maybe there was no plan, really. Is this unpleasant mess all a mistake? |
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