I'm working on some CNC cut foam patterns, and after some advise on which products/methods to use to get a suitably surfaced pattern for taking the mould...

The surface isn't perfectly smooth, with many small pockets from the machining process - see attached image (slightly worse in places)

My original plan - (and have ordered these bits) was to use your epoxy coating resin with glass bead & silica and then brush/spray onto the surface - do you think that will be sandable to a suitable surface finish? should I be looking at adding some 163g woven glass over the part? These are largish parts for car bodywork...

Many Thanks,
James

Great, have ordered enough bits to do it...

can I lay up the skin by hand or would I need to vacuum bag the whole part?

Thanks again,
James

By hand would be the way to go when skinning a pattern like this. You actually want it to be resin rich so that you've got some resin to sand into so hand laminating is the right choice.

--Matt

Matt Statham
Easy Composites / Carbon Mods - Technical Sales