Yeah, polystyrenes come in clear as well as expanded forms.

[quote][b]baja_patient (30/04/2012)As for the acetone, I poured it into a regular plastic drinking cup, the cheap throw-away kind which I assume is PVC, and the bottom just fell out instantly. I was using class A acetone, which I bought from an epoxy supplier specially to clean epoxy tools. 

I'll give it a try anyway, without sanding in the fiber layer.

I didn't realise CF would block the signal but after a quick search, internet is full of references to this matter.

Thanks very much!

Pierre

Hi Baja,

No need to apologise; I guessed as much and that is what the forum is here for after all.

Pierre, regarding your material choice, diolen will be problematic if your surface sanding will break down into the diolen. If it won't and it's just the edges then I think that, allthough a little more frustrating at the edges, you woud be able to work with it. If you think you'll sand down into the diolen on the surface then stay well clear, it would be very hard to deal with in this sense.

Best regards, Matt


Matt Statham
Easy Composites / Carbon Mods - Technical Sales

No worries the forum is there for that  and Thanks Matt for your help.

Hi, I'd like to apologize for the false information. I got my foams mixed up. I built a surfboard once and regular styrofoam and high density closed pore foam were non compatible with polyester. 

Hi Pertabolis,

Actually acetone won't dissolve polyurethane foam or model board. Polyestyrene foam (like Styrofoam or bead-board insulation) is the type of foam that would be dissolved by a strong solvent such as acteone, PU would not really be affected at all.

Regarding the epoxy, that would not be affected by acetone, certainly not over the lengths of time it would take to dissolve away an internal foam core so the process you're describing would be absolutely fine, providing that you use a polystyrene foam core and not a polyurethane one.

Best regards, Matt

Matt Statham
Easy Composites / Carbon Mods - Technical Sales

Good stuff! Yeah I get what you are trying to do. Should be relatively straight forward with a design similar to the one in the picture. But dont forget, CF is a radio frequency blocker. You will lose considerable signal with a full carbon case. Perhaps try black diolen.