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Yes. Few times.
First time, they said to change computer. I changed, nothing. Second time, to try rs232 port, i tried, nothing. And at the end they said that there should be driver on disc. I looked...

I bought from $1699 Laser engraver, $2999 CNC router, solvent printer, cutter plotter Cutter Plotter and I can not connect it with computer. It has 2 ports, RS232 and USB. With cutter i get...

I bought recently chinese laser engraver IE1224 with 100W laser tube.
When I started machine, water pump works, air compressor works, vacuum motors works, x and y motor works too. But laser tube...