If your wheels gum up it means your parts are not cured and still soft. Put some parts into your oven and cure completely say 150 f for a few hours.
I cut my carbon with a Dremel with the shaft extension and cheap diamond disks. (some one shows these in a lower post on this list)
I also use permagrit discs, but I perfer the diamond for my small parts. I don't have a buildup problem at all. I also go through Kevlar no problem with the diamond discs. Permagrit and kevlar! forget it!
Hope this helps.
Fred

For long straight cuts, is a bandsaw worthwhile? We will be making some floor sections for one of our cars, and since all the edges will be straight, it seems sensible to get a bandsaw to do the job - does anyone have any experience of this?

MacG Racing Ltd., UK based Motorsport Racing Team - follow us on Twitter and on Facebook

or direct from permagrit.

lol easycomposties.co.uk

~~~Everytime I hear sound of demoulding part I have eargasm~~~

lol easycomposties.co.uk

~~~Everytime I hear sound of demoulding part I have eargasm~~~

Can somebody forward me to a place where they sell those permagrit cutting wheels? I can't seem to find any on eBay...

Have to agree with the perma grit stuff. I bought the small sanding block and mini cutting wheel a while ago. I´ve only used the wheel once so far but it cut really easy. The sanding block however has built 2 kayaks and paddles completely. That includes sanding/shaping plywood, sanding fiberglass and carbon and even for the fairing. Plus it´s done other bits and pieces around the house including sanding aluminium door frame. It still works as good as new! I can´t even guess at how much sandpaper it has saved me.

Yep I do love my perma-grit disks! work like a charm, do not get clogged either! I use a flexi-shaft on a regular dremmel.

To get into tight sections I use some of dremmel's own tungsten carbide accessories. Also great.

cheers

Remember that when cutting the sheets with a rotary tool that the heat can get quite high causing the resin to begin to melt/burn and hence come off on the cutting wheel.

This can happen on all kinds of discs albeit the more coarse the disc, the more capacity for resin to stick. 

We usually recommend tungsten carbide cutting discs (such as the Perma-Bond range) and we use one in daily use in our workshop.  Yes they can get a bit of carbon build up but not usually a problem and often our discs last a good 6 months of daily use where they could be cutting 10-20 medium sized items every day during the week.

We do use one of the more powerful Fortiflex range dremel tools as they can be located clear of the carbon dust and use a foot pedal. 

Warren Penalver
Easy Composites / Carbon Mods - Technical Support Assistant

Yeah maybe it is cheaper but I pay 0,25 euro for one and it never let me down. I would love to try perma-grit but they are out of my reach, because shipping to poland is too expensive, I am collecting order and I will order bigger parcel at once to save money ;D

~~~Everytime I hear sound of demoulding part I have eargasm~~~