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Old 10-13-2019, 09:28 PM
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Foam Core Stock



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I have some leftover 1 inch blue foam from Lowes. I am going to try making a stock this week. Anybody tried their hand at a composite stock? Round one will be fiberglass and if I have any success I may spring for some carbon fiber or such. I have a minute amount of training in composites as I have a background as a sheet metal mechanic. Any tips or tricks will be much appreciated.
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Old 10-13-2019, 10:32 PM
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Be careful my friend, it can quickly become an addiction
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Old 10-13-2019, 11:48 PM
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Epoxy or polyester resin?

Please say "epoxy" if blue foam.....
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Old 10-14-2019, 12:27 AM
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https://www.rimfirecentral.com/forum....php?t=1167223
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Old 10-15-2019, 10:48 AM
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Thanks for the link aztarget! Lots of good info.
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Old 10-15-2019, 04:03 PM
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Let me know if you have any questions. A while back I was right where you areand it kind of took off from there.

Last edited by Gobber; 10-15-2019 at 08:25 PM.
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Old 10-15-2019, 04:44 PM
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Using the polystyrene foam can be a bit of a nuisance. Tried to make a plug out of it and even some of the epoxy (mas brand) caused core shrinkage. Got my hands on some divinycell foam and boy what a difference. A couple outfits sell in small quantities and varying thickness, its pretty good stuff.

I
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Old 10-15-2019, 05:35 PM
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Used to oversee a bunch of carbon work... This one is the hull of a 55-foot sailing yacht, just popped off the mold a few minutes before.
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Old 10-15-2019, 10:35 PM
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Trigger Guard

What have you guys done for a trigger guard? I've a few ideas but curious to see what you all have done?
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Old 10-16-2019, 12:55 AM
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Mine have all had bottom metal except the couple of chipmunk stocks. For that we cut them from thick 6061 bar stock we had laying around.
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Old 10-16-2019, 09:23 AM
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Used to oversee a bunch of carbon work... This one is the hull of a 55-foot sailing yacht, just popped off the mold a few minutes before.
Hard chines aft. Looks like she might plane. I know it was done by Betts on the left coast but did you follow Bob Perry's "Carbon Cutter" project. Bob is known for traditional looks on fairly fast bottoms. Not race boats but better performing long distance bluewater boats.
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Old 10-16-2019, 09:30 AM
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Using the polystyrene foam can be a bit of a nuisance. Tried to make a plug out of it and even some of the epoxy (mas brand) caused core shrinkage. Got my hands on some divinycell foam and boy what a difference. A couple outfits sell in small quantities and varying thickness, its pretty good stuff.
I agree. Blue foam doesn't do anything well. Divinycell is structural and easy to cut, carve and sand.
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Old 10-16-2019, 09:46 AM
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Hard chines aft. Looks like she might plane. I know it was done by Betts on the left coast but did you follow Bob Perry's "Carbon Cutter" project. Bob is known for traditional looks on fairly fast bottoms. Not race boats but better performing long distance bluewater boats.
Oh, she planed alright. Juan K design for a British client.

She weighed in at about half of the Carbon Cutter's weight, on a 55 foot hull compared to a 43 ft one. Sail area was 50% higher than the carbon cutter.

She wasn't my favorite build there, but the photo was the first to pop up.
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Old 10-16-2019, 06:10 PM
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Mucho Dinero

What kinda prices do you guys pay for divinycell? The stuff I'm seeing is way more than I'd ever want to pay.
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Old 10-16-2019, 06:20 PM
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What kinda prices do you guys pay for divinycell? The stuff I'm seeing is way more than I'd ever want to pay.
Our local boatbuilding supplier sells single 4 x 8 ft sheets - prices here:

https://www.jamestowndistributors.co...ct.do?pid=1588

I'm sure it can be had cheaper in larger amounts from suppliers like Composites One, but they sell to commercial boatbuilders in large quantities.
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