Cutting alupanel or dibond with vinyl on top

[Skye]

Hello
We are getting a local cnc guy aluminum composite into small letters about 2-3" high. However I would like to cover in proper vinyl colour first. Cnc guy is worried the edges of vinyl will look crappy after he cuts.
Sorry if this sounds dumb but my first time on this type of small letters.

Any suggestions would be appreciated.
thanks.

 

[fixtureman]

I use a down cut spiral bit when I have to do that I do get nice clean cuts

 

[cashflow1953]

cutting diobond

i uses down cut 1/8" cutter 17,000 rpm 22" per min mist with water
good luck
cashflow

 

[Jillbeans]

Seems like it would be easier all around to just paint the letters after they are cut.
Love....Jill

 

[HIGHSPEEDGRAPHIX]

+1 have them painted

 

[J Hill Designs]

downcut bit works wonders. no need to mist

 

[bob]

I've covered 1/4" lexan with vinyl and had letters CNC cut and they came out perfectly. I've had lots of AL composite CNC cut and, while the cut is smooth the edges of the aluminum want to stand up a bit and I've always needed to knock them down. I use a1x3/4 brass bar about 10" long with slightly rounded edges rather than any sort of abrasive or cutting edge dressing tool. Just run the end of the brass bar around the edges of the composite and this bends them back flat and level removing the knife-like edge that's standing up.The resulting edge is perfect and is indistinguishable from the factory edge.

This works flawlessly but I doubt any vinyl on the composite would survive But then I've never tried it with vinyl on the composite.Your mileage may vary.