I have a customer that works with really tiny microphones. We use a .85 mm neoprene filler gasket between the surface of the microphone and the inside of the case to eliminate any airspace. They were cutting them out with a hobby knife and using a hole punch, so I decided to see if I could use the laser on them.
I used 500 zooms and 65 pews to get a good clean cut. The kerf was about 0.25 mm.
I got a lot of flashback on the first trial so I covered the crumb tray with blue tape and put the neoprene on the blue tape. The tape absorbed the flashback and both sides look identical. The cuts are clean and except for the corners I can’t really tell the difference between cut and lasered except that the laser cuts are straight. Manual cutting took about 45 seconds per gasket on average. The laser time for 14 units was 45 seconds.
There wasn’t much smoke, I saw a few sparks during cutting, and not much smell. I didn’t find any information stating that it wasn’t laser safe and several companies offering cutting services for it.