2 fast questions. (laser - K40)
1: what can couse this kind of “ghosting” which You can see on photo? I did not change anything at all except adjustable bed. Then i must remove all the “skeleton” with mirrors and other stuff.
After installing a new bed i align mirrors, create tamplate to engraving and cutting (50.8 mm ruler…), and now i have this. Did not change anything, just tried lowering and rising Air Assist - nothing changes… now i have always this strange shadow. One thing - this shadow is on the opposite side then AirAssist. But why this wasn’t visible before???
2: how can i check my lasertube lifetime? I have 3mm thick plywood and after 7-8 runs with this settings (20mm speed, 50% power on machine, 100% power in lightburn, 49.3mm distance to lens) and i cannot cut it. Before after 2-3 runs, plywood was cut.
Never used laser on more than 15-16 mA (55% on K40). Can it be end of this laser tube? What brand You will propose? What do You think about aliexpress tubes? Same kind of sh@#?