Been really busy around here with the Summer, a vacation where my Daughter received a proposal of marriage, garden tilled, planted - then the hard drive borked. One thing after another, it’s been a conspiracy to keep me away from the laser.
Anyway a few material tests that were interesting.
First is to see how far through a 3/4" piece of oak the PRU can make it @ 100% and 4 IPM - right at a 1/2". Happy about that!
Cool to see how the laser penetrates between the hard and soft wood grain.
Next a couple of stone tests. This popular brown marble that bleaches well like all limestone. Featuring the city logo I live in, the dark color of the stone contrasts well. The stuff is 1 3/16", and would make some nice desk top name tags. The logo is 2" square, top one is 1%/335 (before the recent update) bottom is 50%/335.
Next is a scrap of my bar top, Verde Butterfly granite. Not that good for images because of the different constituent minerals in it gives a spotty result.
As a bonus for you here is a little project I did for my Daughter on the event of her graduation with her Masters degree in social work. Cherry proofgrade that I painted flat black. Sweet how the laser cuts a perfect mask for painting! @Jules was instrumental in helping me make this happen 
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Sorry, blurred picture.
She did a couple of internships, one in South Africa and one in Thailand. She has covered as many miles as I have, and I was in the Navy!
Last we have a shot of my visitor, @Secret_Sauce as he watches the machine work.
I have that same look on my face every time I run it. 
