composite rifle stock

General Composites Discussions Showcase
#1

Hi, I wanted to show this butt rifles year it took me several years of development, as many of you I’m a fan of composite materials and they will be able to appreciate the work performed.
The stock is made of fiberglass fabric and epoxy resin, has a core of polyurethane foam that is manufactured is also made by me. The particularity of this stock is that it made in one piece, not two halves glued together. The fiber reinforcement preform glass and pur twice placed in the mold is closed and resin is injected, very similar to rtm light.



#2

Very cool…we did some work on upper and lower receivers for a new weapon, all out of carbon…was a very challenging job. I can appreciate what you’ve done there sir…hats-off to ya!

#3

Wow very cool! Good job man :D. Any pictures of the work in progress?

#4

Nice work you must have thought hard and long about how to to get your process right.

Can I ask a question about your polyurethane foam core do you machine it from a blank or is it formed in a mould?

I ask as have a future projet I am working on which has some simularities to you method of construction. It also needs to be one piece and is tube like in shape. I was thinking of making a two part foam core, poured in to a mould the surface of the mould would have netting layed into it or a mesh type pattern in it which when demoulded would create resin channels in the foam for infusion.

#5

nice work…!

#6

Nice, I was thinking of using a similar technique. I use a tree part mould with prepregs instead, saves the impregnation of fibres!

#7

ignacio,

I’ve been working on a few rifle stocks myself, but have never considered making them all in one piece as you have done because of the complexity of the lay-up. It appears you are also molding the inletting with the stock. If that is true, are you installing solid pillars? If not, do you think you will have enough compresive strength with your molded inletting and foam to hold the action solid? The stocks I’m currently working on will have a solid fill and all the inletting will be done on a cnc. I’m experimenting with a fill that is a combination of epoxy, glass fibers, and microballoons, hoping this will be a lighter weight, strong fill.
By the way,fantastic job!

Jon