Filling & finishing small GRP moulded parts

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Ian Law
Posts: 213
Joined: Wed Jan 02, 2008 11:00 am
Location: Devon

Filling & finishing small GRP moulded parts

Post by Ian Law » Wed Jan 21, 2015 9:34 am

Could anyone recommend the best and lightest method of filling the outer surface "weave" on some small epoxy/GRP fairings I have just made? I assume that either glass or phenolic( which I already have ) micro-balloons in epoxy, applied thinly and sanded down carefully, would be a good option.

I used the plastic film "sandwich" method to laminate the glass fabric, as demonstrated in an EAA video and this has worked very well, with a fairly smooth finish, but it could do with some improvement so the small imperfections don't show through the fabric.

Ian

MikeM
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Joined: Tue Jan 08, 2008 10:23 pm
Location: Exmouth
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Re: Filling & finishing small GRP moulded parts

Post by MikeM » Thu Jan 22, 2015 9:36 am

Hi Ian, I've used epoxy with micro-balloons but also found U-Pol #5 High Build Primer aerosol from Halfords very easy and convenient for small parts. http://www.halfords.com/motoring/paints ... ild-primer

I'm sure members far more experienced in composite methods than I can suggest alternatives.
Mike Mold (007106)
Jodel D117A G-BFEH, Watchford Farm, Devon

Ian Law
Posts: 213
Joined: Wed Jan 02, 2008 11:00 am
Location: Devon

Re: Filling & finishing small GRP moulded parts

Post by Ian Law » Thu Jan 22, 2015 11:14 am

Thanks Mike and I'll given it a try!

Ian

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