Hello!
I need some help for Mylar Stencil cutting. With Sculpfun S9. I have tried everything from research to material test and i cannot seem to cut the mylar sheets. I have got 190
I know sculpfun s9 may not be powerful but o have seen a few people who have managed to do it. Just needed to adjust something.
Could someone help me with this? Any help would be appreciated. Please help. 
Many thanks
I haven’t done exhaustive testing with Mylar but unless you can get some coloured sheets I don’t think you’ll have much luck even with the most powerful diode laser. I have found that coloured acetate works well in my limited tests.
Is it clear sheet? A diode will not make much impact on clear plastics - this is a known fault with the wavelength of light that diode lasers emit.
You can probably do many, many passes and get --some-- effect. But a CO2 laser is what you want to use for this sort of thing.
You may have a better time using a very very thin metal foil, which diodes can have an impact on, though a higher wattage is ideal.
It is a clear sheet of Mylar 0.18mm thick.
I have tried 4 passes on different settings and nothing seems to work.
Clear because visible light passes through without being absorbed. UV diode is a visible light laser. The light cannot heat the material to melt it.
is there any other way I can cut the mylar sheet? I am needing it for a job soon as possible.
Many thanks
As everyone has pointed out, a visible light diode laser cannot cut a transparent material, because the light goes through the material without depositing any energy: there is no heating without energy and no burning without heating.
Unfortunately, a visible-light diode laser is the wrong tool for that material.
Sure, scissors or tin snips, scroll saw or jig saw (very fine blade), or find a local CO2 laser shop.
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