How to cut multicolor engravable polymer

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How to cut multicolor engravable polymer

Postby gbutler » Fri May 05, 2017 1:15 pm

I am new at cutting King Color Core which is a multi color polymer. I have tried numerous times without success using a Onsrud bottom surfacing 1/4" double flute upcut # 66-314. I keep getting swirl marks on the cut. I am cutting a fairly wide about out. It is red/white/red. The white is showing the swirl marks. I use VCarve Pro. I set the rpm at 15000 and 180" per minute. The stepover is at 25%. Any suggestions?
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Re: How to cut multicolor engravable polymer

Postby Rcnewcomb » Fri May 05, 2017 6:04 pm

That is the right bit for the job. Is it possible that your spindle is slightly out of plumb?
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Re: How to cut multicolor engravable polymer

Postby highpockets » Fri May 05, 2017 8:01 pm

I agree with Randall.
You might also decrease the step over to something around 10% to 8%
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Re: How to cut multicolor engravable polymer

Postby Mobius » Sat May 06, 2017 4:32 am

How is the material secured? If it is vibrating, it will leave marks as well.
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