Home Forums Hunting & Shooting Gunsmithing Glass bedding?

Understand, no one makes the epoxy, they only package it. That likely includes even Devon. They buy it in 55 gal (45 imperial) drums from the manufacturer.

You can pick which formulation you want, pot life, mix ratio, strength. You can then add stuff, like Carb-o-sil , a thickener and firmer, mini fibers, another thickener and strenghtener, or fiberglass, another thickener and a even greater strengthener.

I use earth pigments to get the brown. Burnt Umber. The local plastic dealer has a rack of dyes for fiberglass, I imagine they would work for epoxy.

Leaves most bedding compounds in the dust. I have yet to use Devcon before I say it is the absolute best.
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I've used Acra Glas, Marine Tex, Probed, and Devcon, I now use Devcon only

If no one makes the epoxy it just magically appears? Laughing!

There are multiple manufacturers. IIRC you advised G-2 which was a spectacular formulation by Industrial Formulators there in Canada, eh. It was such a good company West bought them a number of years ago and now makes their best formulas under their "System." Plain old carbon black strengthens epoxy a tremendous amount and better black does an even better job.

I have also used them all and now go with Marine-Tex... They all work well.

Boy, this is a hard crowd

I thought the Portland outfit, System Three had bought them, and not West.

West is System Three, or owns it. Originally West was the company IIRC, and then branched into System I and so on from there. They bought IF quite a while ago now.

Be careful putting Devcon (and maybe others) in a microwave. I worked in aerospace for 20 years and we used Devcon to set tooling with. We would buy it in 5 gallon buckets, we used so much of the stuff. In order to "speed things up" a few guys started microwaving Devcon. It cuts the cure time from 24 hours to about an hour, but it makes it very brittle. Long story short, they got caught doing this and got fired. In doing testing in the Q.A. lab there at work, they found that microwaving Devcon that it lost a lot of strength as compared to using it in standard procedure.

One of the reasons I like the Pro Bed is how it cleans up. I normally get into the recoil lug mortise with a small end mill...clearance the sides and lightly radius the back wall to eliminate any minute edging that remains. Pro Bed just cuts nicely and doesn't try to roll around the end mill...you can hear it as it cuts that's it's staying intact.

Lots of good products out there and huge advancements since the original AcraGlas and AcraGlas Gel days, that's for sure. I still use AcraGlas Gel for bedding scope rings because the Nylon in it gives it just enough flexibility to help conform to the scope tubes without leaving any marks at all. Feel free to connect those dots accordingly as it applies to bedding an action.

H.S. Precision used to have a product called 'Accu Bed' that was really ahead of it's time in terms of shrinkage...less that 1/2 of 1%. Now, that's the expected shrinkage number on any quality bedding product. If the mfg. doesn't/won't supply that...or the person doing the bedding can't tell you what the shrinkage is on what they're using...keep looking.

A quality, long lasting job is always a good thing.

Just my view from the cheap seats.... -Al