Colex CNC

[BCreative]

Hi - new here - we have a Colex SharpCut with a 3h Router head - having issues lately with chipping when we cut UV printed Acrylic - anyone have any tips? Different speeds, depths, blades that work for you? Printer is Oce Arizona 318. Inks - IJC 256.

 

[Christian @ 2CT Media]

Are you climb or conventional cutting? Have you tried reversing which ever way you are cutting both in spindle rotation and direction of cut?

 

[BCreative]

Hi - upcut and counterclockwise direction. Haven't tried the spindle rotation - didn't know we could change that - I'll give it a try - thanks!

 

[BCreative]

can you recommend a bit for 1/4 acrylic?

 

[billsines]

If it's a router with a typical collet, you may not be able to reverse. You may not want to because spinning that thing in reverse may cause the collet to thread itself right off, much the same reason a chop saw blade's bolt is reverse thread.

How old is your bit? Do you sharpen or just trash and buy new ones?

 

[BCreative]

our bits are in good shape - we trash and buy new ones - the reverse direction tip seemed to help - thanks for that!

 

[Christian @ 2CT Media]

No problem, some materials like the bit to spin the opposite way... hard plastics seem to be the one that really likes climb cutting. We use various Onsrud Bits here and our favorite for most plastics is 63-725.

 

[BCreative]

great thanks - what is your feed rate and spindle speed on 1/4 acrylic with that bit you like?

 

[Christian @ 2CT Media]

Our machine is way underpowered vs yours but we are cutting at around 16,000rpm and have a feed rate of roughly 100ipm

 

[BCreative]

I appreciate your help!

 

[Christian @ 2CT Media]

no problem!

 

[henryz]

Try an aluminum bit on the acrylic it will cut it like butter.