Talk Composites - The Forum for Advanced Composites

coating a foam plug

http://www.talkcomposites.com/Topic18556.aspx

By si3211 - 6/24/2015 1:51:05 PM

http://www.talkcomposites.com/Uploads/Images/21e5373c-40e6-4703-ac92-9855.JPGI've roughed out a foam plug for some new bodywork working off cad drawings. I've used celotex type low density insulation and i'm now looking to start coating and filling. I was considering covering the foam plug in a fibreglass skin and then building up the finish in layers of polyester primer filler. Can you recommend a suitable cloth and a whether I can use a polyester resin or ?. I have made the plug approx. 3mm smaller than the finished item to allow for a finished build up. ( I attach a photo pre sanding to give an idea of curvatures. Thanks
By si3211 - 12/9/2016 1:54:49 PM

Hi there all,




I've finally finished the plug and i'm now looking to take off a mould . I feel fairly comfortable with making the moulds, creating a split mould with flanges etc using the uni-mould system, the surface area is approx. 2.5sqm. What i'm really after advice for is how to make the final piece. I have access to a suitable pump and was going to do wet lay and vacuum bagging using epoxy resin. Given that the final piece will be painted am I as well using woven glass matt and epoxy rather than going to the expense of carbon. My original idea was to start with 400g of woven carbon cloth, followed by woven glass matt, coremat on the flat areas and then finished with another layer of woven glass matt. Does this sound ok for this type of bodywork? Is it too much or too little? Given that i'm painting the final piece should I save some pounds and just use woven matt? Also is it wish to wet lay all of this in one go or in stages? Any advice would be greatly received.