Arrakis: new, smaller sand table build

This is a test of my new, coffee table-sized sand table mechanism, Arrakis.
The pattern is vaguely circular, set to run at 1500 mm/sec, but for most of this pattern it actually runs just over 1000 mm/sec. Acceleration is set to 15000 mm/sec^2 and jerk speed is 60 mm/sec. Printable area is 600 x 990 mm.
Blog posts on development of my original sand table, The Spice Must Flow:
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[@rasterweb]

Looking good!

[@MarkRehorst]

Thanks Pete!

[@jeromeh2090]

Really nice design, much nicer than the CNC based table I just build ! Can I ask you what kind of insert do you use to make the head rail slide on the side please ?

[@MarkRehorst]

Thanks! Both axes use PTFE bearings. For the Y axis, the whole X axis slides on two PTFE blocks, one of which is spring loaded, that fit the 10 mm slot in the t-slot frame. The magnet carriage which moves in X, has 4 small rectangular PTFE blocks that contact the square aluminum tube that is the X axis guide. Even though PTFE is used, the mechanism has pretty high friction. The servomotors have more than enough torque to keep it all moving, even at high speeds and accelerations. The mechanism is very quiet.

[@jeromeh2090]

@@MarkRehorst Nice idea for the ptfe, I was looking into linear rails as an alternative solution ;)

[@sailor.seahell]

Really robust looking design! Any plans for open source?

[@MarkRehorst]

I am in the process of building the sandbox now. As soon as that is done there will be more videos and a blog post with details including a link to the master CAD file.

[@dwalthers]

Do you sell these?

[@MarkRehorst]

No, but I might if your pockets are deep enough!

[@MarkRehorst]

I wrote a blog post on the build with a link to the CAD file that has all the details you would need to build something like it. See: drmrehorst.blogspot.com/2021/10/arrakis-this-is-part-of-weirding-way.html

[@ervinsilic669]

Mark, any plans of selling this?

[@MarkRehorst]

No plans right now, but things may change...

[@ACELABUTSA]

I am assuming the belts are setup in this orientation ? ruclips.net/video/IkM2K7CsiHo/видео.html

[@MarkRehorst]

No, that's H-bot. I used a corexy mechanism. See: corexy.org/