Cutting Carbon Fibre

[John S]

It's immensely abrasive, shags cutters up like no tomorrow, carbide included.
I think the pro's use diamond coated tooling for it.

[Jonathan]

I think the pro's use diamond coated tooling for it.

Does that make me a pro

I've cut carbon fibre sheet lots of times. By far the best cutter I found is those cylindrical diamond coated cutters you find in rotary tool kits:

http://www.ebay.co.uk/sch/i.html?_tr...&_sop=15&_sc=1

Here's a video of one of these cutting:

[Ok can't find that, will post when I have]

E.g:



It's a bit slow (300mm/min @24000rpm if I recall correctly), but the cutters last a long time and since it's effectively a grinding process the finish is excellent.

[GMCNC]

A chap who does alot with this stuff told me it kills electric spindles very quickly? The 'dust' being very effective at destroying electrical bits....? Anyone had experience of this?