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Joined: Jul 2001
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Originally Posted by mainer_in_ak
Mtnhntr,
West is as brittle as they come. Its an old formulation that the father designed over 30 yrs ago. The little trust fund babies he created, continue to market it, with no change. It creates nasty amine blush during curing that is hard to remove, and hard to paint over. Those amine compounds are bad for your skin. It's as brittle as a glass mirror.

Bedding something to take recoil, your only going to get a mechanical bond. That bond can't be brittle.

Personally, I'd use resin research 2040, thickened with cabosil, strengthened with 3 inch long stands of kevlar fiber. Take apart and cut pieces kevlar cloth to make your fiber.

Skim coat the area a with raw unthickened epoxy first. This is your penetrating coat, to promote adhesion. Let that coat tack up, before the fiber and cabosil enhanced coat goes in. Do all this at 75 degree Fahrenheit with low humidity. Use slow hardener so it doesn't set up too fast for you to finish your work.

Leave the job be for 24 hours at 75 degrees before you begin shaping or removing slag.

Forgot to add: prior to job, rough area with 60 grit. Only clean area with stove alcohol. Epoxies are finnicky and react badly to certain chemical degreasers. Little shallow pock marks with a 1/4" drill bit doesnt hurt either. These act like rebar-reinforced concrete pillars, when the thickened resin flows into them.

The compressive strength of 2040 resin is insane. You can pound on it with a sledge hammer. It wont crack, but will dent.

I made felling wedges with 2040 for my tree work. The plastic ones from stihl and husqvarna are too brittle in the cold. I smack them into back cuts on trees im felling with a 3lb splitting/forestry axe. They never crack.



Maine,

Good to know, I'll check out your recommendation. The RR 2040 epoxy sounds impressive btw. I prefer slow cure epoxies as well, usually stronger and less brittle. Thanks.

Tagged.




GB1

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Great stocks. I love all that I have owned and still own.

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I have and have worked on several of Marks stocks for friends all have been no problem and all have been great stocks. Little prep work, bed and paint (I hate the paint part, just not my thing) but all have been great stocks.


I may not be smart but I can lift heavy objects

I have a shotgun so I have no need for a 30-06.....
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Damn Mainer, I sell epoxies and you took me to school.

In looking at the 2040 data sheet it says heavily modified. To me it sounds like it has a hefty slug of “rubber” in there. Toughening agents like coreshell epdm rubbers are used to help with resiliency. Many composites folks look past these as the viscosities can run too high for fiber / fabric impregnation.

I like all of my McMillans, but figure we’re on the horizon of new resin technologies that will really start to change the way stocks can be built.


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Creek, not the case, 2040 is a very thin epoxy and wets out even 20+ ounce cloth very well. Of the half dozen brands I've used over the past decade, 2040 is on thinner side.

Resin reasearch 2000 is on the thick side, and less flexible as well.

IC B2

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Ok mainer what is your opinion of Brown Precision stocks? I have several of them mostly 'pounders and haven't had any issuses.

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Originally Posted by Docbill
Ok mainer what is your opinion of Brown Precision stocks? I have several of them mostly 'pounders and haven't had any issuses.


No clue.

Another good one is God's composite: walnut.

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The only problem with Gods composite is that it is heavy. If I want a 9 + lb rifle I go wood.

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That's not the only problem with wood.. 🙄

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