Mark Rehorst's Tech Topics

My technical projects that include topics such as 3D printing and printer design, photography, optics, electronics, etc.

Tuesday, December 23, 2025

Using Arrakis 2.0 Drawing Files On Arrakis 3.0

I spent hundreds of hours generating drawings for Arrakis 2.0, all 590 x 980 mm. Arrakis 3.0's drawing area is 465 x 1005 mm so those Ar...

Tuesday, November 25, 2025

Arrakis 3.0 - A New Sand Table Design

Arrakis 2.0 seems to have found a new, permanent, home, leaving me without a coffee table. You know what that means... Behold! Arrakis 3.0 A...

Thursday, October 2, 2025

A Wiim Amp Pro for the bedroom system

I like to listen to music or recordings of tree frogs and crickets when I'm going to sleep so I've had a stereo system set up in th...

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