Anyone tried engraving heat shrink tube?
I've been accustomed to having access to a printer that does thermal printing on heatshrink tube for cable marking, but no more. So I though, well, I have a freckin laser..!
Tried various speeds and power levels, on yellow heat shrink (as it was what I had available after failed prints) - but it either left a faint imprint, or cut through the tube, with little charring or discoloration at all. And the faint imprint sort of dissapeared after shrinking the tube.
Edit, last picture with black print is the actual printed tube, just to show the difference in constrast.