Hi. I have had a bit of a disaster, that actually turned out to be a bit of a godsend.

Anyway, My passenger door is fibreglass but I have cut out most of it leaving just the edges to which I plan to stick carbon fibre panels. Did the cutting and made the panels, so far so good.

Sanded the carbon with 80 grit and cleaned with acetone and allowed to dry. Likewise the fibreglass.

Spread on the VM100 and clamped the panels on, one at a time, and left overnight to cure.

All looked Hunky Dory. Offered door up to the opening and discovered that is had twisted! Bugger, now how the hell do I get the carbon panels off? Turned out to be very easy as they just peeled off!

Question is, what dId I do wrong? Photos show edge of panel, I simply scraped off the glue residue with a Stanley blade. The glue is very securely adhered to the fibreglass.

Looks like for some reason it didn't grip the carbon. How was the carbon sheet made?

I wonder if it was just the mechanism of peel?  Structural adhesives are vulnerable to peel - you will see some "anti-peel" fixings on bonded structures (eg lotus elise tub). That and the fact the adhesive wasn't cured fully cured might have made it easier to peel.  

Warren Penalver
Easy Composites / Carbon Mods - Technical Support Assistant