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Tools of the trade / Re: Cutting mylar stencils with a silohuette cameo
Syso here from Berlin, Germany. I've stumbled upon this post while trying to cut SMT stencils for
some of my projects which uses 0603 parts, a minimal amount of 0402 and a TQFP64, with a laser cutter.
Unfortunately I wasn't happy with the results, as the Mylar (BoPET) melted and started to bend.
After that I decided to buy the Silhouette Portrait and give it a try.
So far all except the TQFP64 looks great. I am cutting Mylar 0.125mm with the Blade Setting at 4, 2-Pass
with gerber2graphtec (Speed: 2,1 - Force 8,30). Somehow, my results differ from yours. With the default
settings (matrix etc.) I get a little trapezoid (not that problematic) instead of squares.
Also I had to find out that my mat seems to be different - it's not keeping the cut-out pieces on the mat
(it's not sticky enough), so it requires a lot of work with a thin needle.
Do you guys have any tips for me?
I need to complete 15 PCBs using this method hopefully.
Last used settings:
Code: [Select]
knife at 4, use cutting mat, matrix 1.001,0,-0.0005,0.9985 --speed 2,1 --force 8,30 --offset 3,0.5
Cheers
PS: Here are my laser results:
https://syso.name/w/making-laser-cut-sm ... rom-bopet/
And this is how the result looks (QFP64):
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