This afternoon i did a test cut (speed 5 mm/s, power 50%) on acrylic, my k40, with c3d laserboard, did cut the 6 mm acrylic in 3 passes. Great! After the test i tried to cut a few templates, the first template was oke, after the first one i lost power. I tried a few settings, nothing helped. Afte…

Take a look at this post [image] A couple of great laser lens references. First simple, second in depth. Lasers A couple of great laser lens references. First simple, second in depth. @Scott_Thorne The Basic Laser Optics has your beam pattern in it. It is totally normal!…

Thank you. My pattern looks like this: [mirror] Could it be a power supply problem? Greetings Ben

Are those patterns from a test fire of a single test fire? If so, then your tube has shifted mode and there is nothing you can do but get a new tube. The references HalfNormal posted about talk about laser (TEM) modes, but I see the link for the first one is now dead. Why this happened is hard to…

The laser tube can degrade very quickliy when it get too hot. You should also check your water cooling.

it was just 1 test fire. thanks

Power loss/strange laser beam

Lasers

HalfNormal (0.45 NACL) October 21, 2019, 9:06pm 2

Take a look at this post