- Thread starter
- #26
awdrst
20+ Year Contributor
- 353
- 3
- Mar 27, 2003
-
middletown,
New Jersey
So you want to overlay the tail section? If so the way I always do it is scuff up the part after cleaning it. Put on a light coat of resin(on overlays since there is no need for strength I suggest a vinylester resin since it's cheaper than epoxy, both will work just if price is a factor) and let the resin get tacky to the point where you leave a fingerprint but no resin comes off on your finger. Now take the carbon and lay it on and lightly press it down on the resin which will hold the cabon in place. The way I get the sides of the part to stay down is to wrap the carbon slightly around the part and put a piece of tape to hold the sides nice and tight. Now apply a few coats of resin and the last coat you put on you should add 1% sanding wax agent. This will allow the resin to fully cure and make sanding the resin 100000 times easier.
The vacuum bag idea would work fine but it really is a waste of material and in the end probably more work for you. The nice thing about using the vinylester resin or any ester based resin is the fact that it won't fully cure when exposed to air so if you don't have time to put on a few coats no big deal just don't add the sanding wax and you can come back to it in a day or in a week and just add more on top of it without having to scuff it back up.
Another good tip about using the wax is to wax the part 10 times. You can never over wax a part or mold just make sure you don't leave any clumps or anything like that since it will transfer to the part you are making. I have done molds in the past no pva and when I make parts from molds I never use pva since surface finish is important to alot of people.
The vacuum bag idea would work fine but it really is a waste of material and in the end probably more work for you. The nice thing about using the vinylester resin or any ester based resin is the fact that it won't fully cure when exposed to air so if you don't have time to put on a few coats no big deal just don't add the sanding wax and you can come back to it in a day or in a week and just add more on top of it without having to scuff it back up.
Another good tip about using the wax is to wax the part 10 times. You can never over wax a part or mold just make sure you don't leave any clumps or anything like that since it will transfer to the part you are making. I have done molds in the past no pva and when I make parts from molds I never use pva since surface finish is important to alot of people.


