I have got a R-axis drive as a birthday gift.
It is just plug-and-play with GRBL controller.
And it is also adjustable
It is not for a very thin objects. It cannot engrave anything thinner than an inch without a little help.
Fortunately, I have a 3D printer and I can print 2 of these:
Here is my test result:
Now is the hardest part: I need to come up with some design idea…