Carbon fiber stock build

Mram10us

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Just getting started building a CF stock that will resemble my manners eh1. Here is how far I have gotten tonight. Next step is filling the stock with modeling clay so there are no spots to mechanically lock. Lots of wax coats on the stock after that with some good mold release for good measure. I'm using epoxy resin because i want to use this mold many times not just once. Can't find any other mold materials that will be this durable for the price.

Here is the stock in the mold casing. The sides are 1" which is half the width of the stock. The plywood inside the form is 3/4" to take up space. I dont need it all to be epoxy resin, just the part close to the stock. When the time comes, a couple drops of hot glue will hold the stock in place, at the correct height using shims, before pouring in the resin
12A321B8-69F1-4022-B63F-5DF5E9F70368.jpeg
6DBC6873-CCC5-4F22-ACDA-0267206B0314.jpeg


At this angle, you can see the height difference. The resin will fill the stock cavity and overflow onto the 3/4" plywood while staying inside the 1" sides.
00C3F2B4-3C60-4FD1-AE02-118678924472.jpeg
 

rfurman24

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Aug 29, 2010
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Kansas
Just getting started building a CF stock that will resemble my manners eh1. Here is how far I have gotten tonight. Next step is filling the stock with modeling clay so there are no spots to mechanically lock. Lots of wax coats on the stock after that with some good mold release for good measure. I'm using epoxy resin because i want to use this mold many times not just once. Can't find any other mold materials that will be this durable for the price.

Here is the stock in the mold casing. The sides are 1" which is half the width of the stock. The plywood inside the form is 3/4" to take up space. I dont need it all to be epoxy resin, just the part close to the stock. When the time comes, a couple drops of hot glue will hold the stock in place, at the correct height using shims, before pouring in the resin
View attachment 227069View attachment 227070

At this angle, you can see the height difference. The resin will fill the stock cavity and overflow onto the 3/4" plywood while staying inside the 1" sides.
View attachment 227071
You are a very industrious man. I have considered trying this many times but just can't find the time. I look forward to your results.
 

livetohunt

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Looks a little bit simpler than the plastic injection molds I used to build bahaha! I wish I had more free time to do cool stuff like that. My laundry list of stuff to prototype is so full already 🤨
 

Tidus56

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Feb 1, 2018
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I will be interested in what you do with this...my buddies and I got real close to having a working stock. We all have been real busy and its on the back burner for now. We made fiberglass resin molds and they worked great, had a few issues however with rigidity. PM me if you want any info or pics of the stuff we have tried. Only picture I can find on my phone...getting there just some seam issues to fix.
 

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Mram10us

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I will be interested in what you do with this...my buddies and I got real close to having a working stock. We all have been real busy and its on the back burner for now. We made fiberglass resin molds and they worked great, had a few issues however with rigidity. PM me if you want any info or pics of the stuff we have tried. Only picture I can find on my phone...getting there just some seam issues to fix.
Great! I'll take all the advice i can get since youve gotten much further than me.
 

Mram10us

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Tagging in. Do you already have your CF materials? If so, can you list out specifics and where you got them?
Dont have all the cloth for this yet. Still need to order the wide stuff for the butt of the stock. Step 1 is to get a close to perfect epoxy resin mold then figure out what materials and layup style is best for strength. Lots of questions to answer when the mold is complete
 

jrock

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Mar 12, 2014
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Idaho
This is on my recent to do list and I appreciate the thread. I've spent many hours sitting and thinking through bagging or mold methods. My current plan is to make a foam blank, wrap with CF and then bag. Anyone here see a major down side going one way or the other?
I'm hoping to get the MDF stock blank made over the holiday.
 

Tac-O

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Apr 28, 2019
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Utah
Very cool!!

I've often thought about how someone would do this at home and how the mold would be made. My grandpa has owned and still runs a little plaster figurine shop for 40+ years where he makes tons of fiberglass resin molds and silicone molds to pour his plaster into. I worked in his shop through highschool, so this is pretty interesting to me!

With your mold frame, are you going to build up the walls of the frame so that you can pour your resin over the full height of the stock, or are you going to do your mold in two halves, one at a time?


I believe my grandpa's main molding method was to paint on layers and layers of liquid latex until it was about 1/8" thick. Depending on the shape, he would sometimes build in a seam along the edge so that the mold could be split open to get the figurine out easier. After the latex part was done, he would then create an outer shell of fiberglass and resin to support the latex mold when pouring in the plaster. He also built in a seam to the shell all the way around, so that the shell could be split in half and removed when the plaster set up and the mold was to be removed.
 

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