Brownells AcraGlas by wt ???

[Leroy Johnson]

Al, when I was in Lassen College gunsmith school I took Chet Brown's fiber glass stock bedding class, Chet had us using Acra Glass and the little cups per the instructions from Brownells it worked very well for a single stock. Chet also told us that in his shop, Brown Precision Inc and the volume stock work they did all epoxy was weighed before mixing. I do not remember if they used Acra Glass, maybe Mark Brown at Brown Precision can answer your question, although I haven't talked to Mark in some time I've always found him to very helpful.
Good luck on your mission.
Leroy Johnson

 

[alinwa]

Al, when I was in Lassen College gunsmith school I took Chet Brown's fiber glass stock bedding class, Chet had us using Acra Glass and the little cups per the instructions from Brownells it worked very well for a single stock. Chet also told us that in his shop, Brown Precision Inc and the volume stock work they did all epoxy was weighed before mixing. I do not remember if they used Acra Glass, maybe Mark Brown at Brown Precision can answer your question, although I haven't talked to Mark in some time I've always found him to very helpful.
Good luck on your mission.
Leroy Johnson

hey, now that's good thinkin' right there

Thank You

al

 

[Calumet]

Al, I pillar bedded a 788 Rem. using a two step process, I think about the same way you described. Regular AcraGlas around the pillars. Then AcraGlas Gel for the final action bed.

I used dental irrigation syringes to measure by volume, then after mixed, applied the mix around the pillars with another syringe with a "glue pen tip", slid over the tip of the syringe. Worked great, & the irrigation syringes were free at the local pharmacy. The glue tips I think I had to pay $1.29 for. The syringes have calibration marks by volume, easily converted to weight.

Only worked with the regular AcraGlas, the Gel was to thick. Calumet

 

[alinwa]

Speaking of the gel being too thick. I ordered a can of the "Acraglas thinner" which is supposed to make any acraglas product as thin as you want it to be.

It doesn't work with the gel at all. A complete waste IMO.

Good tips on the free syringes.

al

 

[RJM]

Al,
I'm generally disappointed with the AG gel - it never seems to harden completely & stays a bit rubbery. The regular AG and Devcon 2 ton epoxy work better for me, and acetone or MEK can thin either.

Of course the AG can be mixed by weight, as long as the 1-4 ratio by volume is followed. You've already figured out a relative density of epoxy & hardener. Say the hardener is 90% as heavy as the epoxy. If you have 400 gr of epoxy, then
you need 90 gr hardener. Most of us eye- ball the ratios, so as long as the hardener is not vastly over the 1-4 ratio, it won't matter.

I realize you want maximum strength. Maybe you should look for a different product if this is a critical application & AG is questionable.

Regards,
Ron