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Burn and Smoke marks on Laserable plastics
Hi all ye experts,
I’m Laser engraving White on Black 1.5mm Plastic made by IPI and where I cut my labels out with the laser on the rignt and bottom of the label I get a fair bit of discolouration and smoke damage.
I played around with the power/speed and frequency to get rid of this to no avail. I have to resort to wipeing them all down with IPA.
Perhaps some one has had this before, I’m using a 35W epilog helix.
Thanks,
Timmy
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2 Replies
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Air assist at the proper pressure and directed at the cut will help , lowering the PPI (pulses per inch – maybe you call it frequency) will also.
Naptha works well to remove residues.
Finally,you can put paper based sign vinyl application tape over the sheet before cutting to mask it.
Cutting on a honeycomb table where the exhaust system of the laser sucks down thru the honeycomb will also be better.
Go here and post the question if you want the Epilog experts to give you more precise settings for this material
http://www.sawmillcreek.org/forumdispla … 409934&f=8
and
http://www.worldofengraving.com/ -
HI Rodney,
Thanks for the advice, I’ll get some Naphta ( I presume you mean Napthalene)
Cheers,
Timmy
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