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#1
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Cap Dan gave me a Seacook stove for my daughters cruise on my
sailboat. It works very well. However, the female part of the mounting bracket is cracked and the stove is no longer made. Looks like an opportunity. The original parts are made from plastic that will eventually crack. I can easily make replacements from the glass/plastic composite called G10 that will probably never crack. G10 cannot be molded which is why it is not normally used. However, it can be machined with carbide tooling. G10 is an amazingly strong material due to the glass imbedded in it. I made backing plates for the cleats on my Tolman from it and the rudder mounts for my MiniCup sailboats. It can be threaded although I'd still rather have a backing nut One could easily make outboard bracket plates from it or other parts. These will always cost more than molded parts but the G10 parts are better. It holds dimensional tolerances far better than molded or stamped parts. It is also somewhat lighter than even Aluminum and of course is a non-conductor. So, anybody have any interesting ideas for parts to be made from this stuff. The idea is to find some parts people need made in quantities of a few dozen to a few thousand via CNC milling and lathe work. It seems to me that some outboard parts might be good candidates. |
#2
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On Sat, 23 Jan 2010 10:46:56 -0800 (PST), Frogwatch
wrote: On Jan 22, 11:16*pm, Frogwatch wrote: Cap Dan gave me a Seacook stove for my daughters cruise on my sailboat. *It works very well. *However, the female part of the mounting bracket is cracked and the stove is no longer made. *Looks like an opportunity. The original parts are made from plastic that will eventually crack. I can easily make replacements from the glass/plastic composite called G10 that will probably never crack. *G10 cannot be molded which is why it is not normally used. *However, it can be machined with carbide tooling. G10 is an amazingly strong material due to the glass imbedded in it. I made backing plates for the cleats on my Tolman from it and the rudder mounts for my MiniCup sailboats. *It can be threaded although I'd still rather have a backing nut One could easily make outboard bracket plates from it or other parts. These will always cost more than molded parts but the G10 parts are better. *It holds dimensional tolerances far better than molded or stamped parts. *It is also somewhat lighter than even Aluminum and of course is a non-conductor. So, anybody have any interesting ideas for parts to be made from this stuff. *The idea is to find some parts people need made in quantities of a few dozen to a few thousand via CNC milling and lathe work. *It seems to me that some outboard parts might be good candidates. I walk into the shop this morning with the stove bracket and pull out some G10. Suddenly, I have the two machinists hovering over me with worried looks on their faces. Before long, they decide they'll make it for me. of course, they will do a much better job than I could do. I was going to use three pieces of G10 glued together because I do not trust myself on the mill. They simply pulled out a big piece of G10 and a dovetail cutter to make it out of a single piece on the mill. Anybody else need a stove bracket? What do you figure that part cost you? If it was Garolite, it had to be at least $250 plus machinists labor because it runs about $2,500 per 36"X48" sheet at 3" thickness which you would need for that mount at least. G10 only comes in 1/2" thickness so your still looking at the same amount of money. Dude - that just ain't cost efficient. A small block of aluminum would be a hell of a lot cheaper. |
#3
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On Jan 23, 8:40*pm, Tom Francis - SWSports
wrote: On Sat, 23 Jan 2010 10:46:56 -0800 (PST), Frogwatch wrote: On Jan 22, 11:16 pm, Frogwatch wrote: Cap Dan gave me a Seacook stove for my daughters cruise on my sailboat. It works very well. However, the female part of the mounting bracket is cracked and the stove is no longer made. Looks like an opportunity. The original parts are made from plastic that will eventually crack. I can easily make replacements from the glass/plastic composite called G10 that will probably never crack. G10 cannot be molded which is why it is not normally used. However, it can be machined with carbide tooling. G10 is an amazingly strong material due to the glass imbedded in it. I made backing plates for the cleats on my Tolman from it and the rudder mounts for my MiniCup sailboats. It can be threaded although I'd still rather have a backing nut One could easily make outboard bracket plates from it or other parts. These will always cost more than molded parts but the G10 parts are better. It holds dimensional tolerances far better than molded or stamped parts. It is also somewhat lighter than even Aluminum and of course is a non-conductor. So, anybody have any interesting ideas for parts to be made from this stuff. The idea is to find some parts people need made in quantities of a few dozen to a few thousand via CNC milling and lathe work. It seems to me that some outboard parts might be good candidates. I walk into the shop this morning with the stove bracket and pull out some G10. *Suddenly, I have the two machinists hovering over me with worried looks on their faces. *Before long, they decide they'll make it for me. *of course, they will do a much better job than I could do. *I was going to use three pieces of G10 glued together because I do not trust myself on the mill. *They simply pulled out a big piece of G10 and a dovetail cutter to make it out of a single piece on the mill. Anybody else need a stove bracket? What do you figure that part cost you? *If it was Garolite, it had to be at least $250 plus machinists labor because it runs about $2,500 per 36"X48" sheet at 3" thickness which you would need for that mount at least. *G10 only comes in 1/2" thickness so your still looking at the same amount of money. Dude - that just ain't cost efficient. *A small block of aluminum would be a hell of a lot cheaper. This reminds me of the old surgeons joke where the punch line is: "The patient died, but the operation was glorious!" |
#4
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On Jan 23, 11:02*pm, TopBassDog wrote:
On Jan 23, 8:40*pm, Tom Francis - SWSports wrote: On Sat, 23 Jan 2010 10:46:56 -0800 (PST), Frogwatch wrote: On Jan 22, 11:16 pm, Frogwatch wrote: Cap Dan gave me a Seacook stove for my daughters cruise on my sailboat. It works very well. However, the female part of the mounting bracket is cracked and the stove is no longer made. Looks like an opportunity. The original parts are made from plastic that will eventually crack. I can easily make replacements from the glass/plastic composite called G10 that will probably never crack. G10 cannot be molded which is why it is not normally used. However, it can be machined with carbide tooling. G10 is an amazingly strong material due to the glass imbedded in it. I made backing plates for the cleats on my Tolman from it and the rudder mounts for my MiniCup sailboats. It can be threaded although I'd still rather have a backing nut One could easily make outboard bracket plates from it or other parts.. These will always cost more than molded parts but the G10 parts are better. It holds dimensional tolerances far better than molded or stamped parts. It is also somewhat lighter than even Aluminum and of course is a non-conductor. So, anybody have any interesting ideas for parts to be made from this stuff. The idea is to find some parts people need made in quantities of a few dozen to a few thousand via CNC milling and lathe work. It seems to me that some outboard parts might be good candidates. I walk into the shop this morning with the stove bracket and pull out some G10. *Suddenly, I have the two machinists hovering over me with worried looks on their faces. *Before long, they decide they'll make it for me. *of course, they will do a much better job than I could do. *I was going to use three pieces of G10 glued together because I do not trust myself on the mill. *They simply pulled out a big piece of G10 and a dovetail cutter to make it out of a single piece on the mill. Anybody else need a stove bracket? What do you figure that part cost you? *If it was Garolite, it had to be at least $250 plus machinists labor because it runs about $2,500 per 36"X48" sheet at 3" thickness which you would need for that mount at least. *G10 only comes in 1/2" thickness so your still looking at the same amount of money. Dude - that just ain't cost efficient. *A small block of aluminum would be a hell of a lot cheaper. This reminds me of the old surgeons joke where the punch line is: "The patient died, but the operation was glorious!" Tom: I buy Garolite (G10) in thickness ranging from 1/16 up to 1" and in tubing and various other forms. I only need 2" X 2" for this piece. Twenty minutes of machinist time to make. If it is done by cnc, maybe an hour of programming time and then no machinist time. OTOH, Aluminum corrodes and would ultimately cost more. I only needed a 2" X 2" X 3/4" for this part. |
#5
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On Sat, 23 Jan 2010 23:03:40 -0800 (PST), Frogwatch
wrote: Tom: I buy Garolite (G10) in thickness ranging from 1/16 up to 1" and in tubing and various other forms. I only need 2" X 2" for this piece. Twenty minutes of machinist time to make. If it is done by cnc, maybe an hour of programming time and then no machinist time. OTOH, Aluminum corrodes and would ultimately cost more. I only needed a 2" X 2" X 3/4" for this part. Hey - what ever works. :) I wasn't trying to one-up you, I was just curious. I must admit I haven't worked with the G10/FR4 material in a couple of years, but I know it was expensive - I think we paid like $800 for a 36"X48" sheet of 1/8th inch thick - we used a copper salt bath to make trace circuits for a microwave experiment. I would imagine if you use the stuff all the time, the costs go down in quantity. |
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