Cutting 10 mil mylar

[Dave Vigness]

Okay, so she got some sheets of 10 mil mylar to make her own stencils. Read 'Honey, you can just...'

So I'm shooting in the dark on settings. I have an 80W machine. I'm guessing around 30% power at 100 mm/s, about the same as I do for heavy paper. These are going to be one offs for the most part, so I'm not looking to max out on speed, just get a decent cut.

[Gene Uselman]

I was doing some of these cutting/engraving tests for .22 " acrylic today to fill out my LightBurn material library. A few of these with some basic cutting parameters will give a good baseline for where to start to experiment.



viewtopic.php?f=104&t=3475

[Dave Vigness]

Thanks Gene, I'll give it a try. I've done some 1.2mm acrylic so I have some settings, just not for anything that thin. I figured I'd load my card stock settings as a starting point and see what happens. It's going to be 100% cutting, so if I over power it at first no big deal. I'm more concerned at under power and not getting a cut. Bad part is my power curve on my 80W is more like a quarter circle. Bad enough I wish I could make .25% jumps at the controller for the low power settings.

She gets too serious about these stencils, and I might seriously look at a good diode laser.

[Gene Uselman]

You can make .25% jumps, and at the low end I often use 8.75 as my lowest possible setting for engraving. My max is 45% so while I don't appear to have as many fine adjustments, in the end it mostly matters at the lowest settings I have found.

[Doug Fisher]

For really thin materials, I often find multiple passes at higher speeds work well.

[Dave Vigness]

Going to do a power / multi pass test with a scrap piece. My 30% @ 100 mm/s cut, but the surface was a bit ugly and a few of the cuts were a bit 'jagged'. Could need to turn my air assist down or off.

AND MYLAR STINKS !!!!