New design for a CNC engraver/etcher/scratcher ... ???

What the tiiiiiit is this thing supposed to be named?
I am going with "scratcher" from now on, all it does is scratch the surface of granite or stone or glass or wood or...
So, i thought it would be nice to do a new design for these machines i keep making from time to time and since i had to learn FreeCAD again, i gave it a go, so here are the results of the Version 1 :



and Version 2 :

For more info and videos
instagram @toma.3d and @toma.cnc
-
Attached is the full set of STL files in case anyone wants to build one, one part is compressed using 7Z and renamed to be able to upload, so remove ".txt" before unzipping it.
Edit:
Added the latest config as it has provisions for disabling PWM on ESC/Stop to prevent spindle from making a big hole on the material. Also "run from here" should work as is.

That is cool Tommy, I like "scratcher".

Here is a quick picture of the current state of "The Scratcher" as i got the frames back fro m painting yesterday so been busy putting it together.
Also printing parts for the second one in yellow PETG.

One done:


The other getting the spaghetti treatment or wiring:

Also finished this working occasionally on it

It has 4 motors on the Z axis so it probes 4 corners and adjusts each corner to make the table flat.

Another video
youtube.com/shorts/mPyvLKJxuzI?feature=share
STL files are attached near the top, if anyone wants to build one.

santy wrote:

Or pressing harder with a Z axis movement?

This.
The spindle and spindle motor are attached to the shaft of a 3 phase sensored servo motor from big photocopiers, they need 12-24V to work and a inverted PWM output from parallel port or Mesa board. Inverting is done using a single resistor and a transistor.
Inverting can be done by inverting the pin in hal, but that has the nasty habit of ramming the spindle in the table until LinuxCNC is started.