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

But…

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…