Fuzzy Dibond?

[chodges]

We were cutting some 4mm Dibond (aluminum composite with a PVC core) using an 1/8" upcut spiral at 1 ips, and all the edges of the PVC are fuzzy - like tiny short hairs all over the edges that won't come off with a brush and compresed air. They don't even sand off very well either.

Any ideas?

Thanks!

[benchmark]

Charlie,

What RPM are you running the Router/Spindle ?


Paul

[chodges]

18,000 rpm

[zeykr]

Is it dibond with the solid pvc core or one of the products with the corrugated core? I've never got the corrugated type to cut real well, though I think it was a straight o-flute that did the best for me.

[chodges]

Dibond has a solid polyethylene core - not PVC like I said earlier.

[nailzscott]

I cut about 40 parts out of 2 4'x8' diebond sheets and simply used a straight single fluted carbide bit, as recommended by some other shopbotters. Worked great. The only fuzz I got was the protecting film that was on the diebond surface; but that just peels off.

[paco]

I use 2 straight edges O-flutes tools for Dibond/Alupanel and such. RPM and feeds depends on the shapes. I also climb cut and always ramp-in the cut on lead-ins. One straight edge O-flute tool still leave some uncut chips on corners. Spiral tools will leave a fussy edge.

As always, largest diameter you're allowed to use and shortest cutting length for maximum tool rigidity.

[chodges]

Paco ...

Would you please tell me where you get your bits with 2 straight edges and 0-flutes?

Thanks!

[paco]

Onsrud 56-600 series

[chodges]

Thanks!