brand new One Laser XRF with air assist. through a loupe and sometime visibly I am getting rounded corners during the material cut test. any thoughts? thank you in advance.
XRF CO2 Machine Settings.lbso.lbset (12.7 KB)
Are you using a galvo machine? looks a lot like a flat focus lens with no correction.
it is a One Laser XRF CO2
The image from the material test is blurry, and honestly, I can’t distinguish the problem you’re reporting.
In the enlarged image, it seems to me that it’s more an effect of the lens of the magnifying equipment used than the result of the laser cutting machine.
What I get from the enlarged image is something I’ve never seen described in the forum: the bridge is slightly bent/bent. I sincerely hope not, but being a brand new machine, did it arrive at its destination without any damage? 
Things to keep in mind:
- The focused spot is round
- It’s burning through wood
- The kerf is about 0.2 mm
- The squares are 5 mm on a side
The magnified view is apparently from the middle of the top row of the Material Test (with a few more squares knocked out), where the machine is moving at 60 mm/s. Their claimed 3 G acceleration almost certainly applies only along the X axis, so the slight overburn happens while the beam slows nearly to a stop as it entes and leaves the corner.
Here’s what a 0.2 mm kerf looks like in those 5 mm squares (rotated to put the X axis horizontal and blowing out the contrast):
AFAICT, the corners are about as square as they can be, given the beam size and the material.
No wonder whatever the problem is went unnoticed by me. I say this after it was analyzed at a “CSI” level and the only thing it found is, apparently, normal. 
Thanks to @ednisley for your prespective!