Issues with Cutting - 80w Laser

[Tony Lenkic]

Did you check on laser accessories second page?
At bottom of first page there are navigating arrows with numbers 1 2 3 in middle. Click on # 2 page than scroll down.

[Soren Christensen]

Did you check on laser accessories second page?
At bottom of first page there are navigating arrows with numbers 1 2 3 in middle. Click on # 2 page than scroll down.

They have 12, 18 and 20mm lenses

[Soren Christensen]

What lens you using, and what do you consider a low speed?

As a reference, my 80w RECI-tube Triumph will cleanly cut thru 1/8 (3mm) acrylic, at 20mm/sec, with a 2" lens, at 26mA.

If you have a cone on the lens, remove it and see what happens. If it cuts better then your beam is hitting the cone

Have you made sure the beam is hitting the mirrors reasonably centered? Any bit of beam missing a mirror is going to drastically reduce the focused beam's power density...

Yesterday, I got the lens out and this is what i saw:

IMG-20201220-212738-01.jpg

IMG-20201220-213448.jpg

IMG-20201220-213504.jpg

Discoloration and some unidentified marks, that are not on the surface of the lens, because it wont come off with lens cleaner :/

[Kev Williams]

That lens is cracked...

it'll still work okay, but DOES need replacing, kinda like this one
fo3.jpg
This lens started collecting guck from smoke which ended up cooking and coking onto the lens.
The carbon just kept getting hotter and discolored the lens until it finally cracked.
I got the carbon off with acetone, the 'heat' halo and crack remains... and yet this lens
still engraves just fine. I keep around just in case

[Soren Christensen]

That lens is cracked...

it'll still work okay, but DOES need replacing, kinda like this one
fo3.jpg
This lens started collecting guck from smoke which ended up cooking and coking onto the lens.
The carbon just kept getting hotter and discolored the lens until it finally cracked.
I got the carbon off with acetone, the 'heat' halo and crack remains... and yet this lens
still engraves just fine. I keep around just in case

Wow and I thought my lens was in a bad state

I have decided to upgrade the laser head, so I ordered the E series set from Cloudray along with a new lens. So for the time being, the laser is sitting dead in the water