Mark Rehorst

Racine, Wi. Joined January 29th, 2006
11 Instructables 461,441 Views 240 Comments 203 Followers

I was electrical engineer for 22+ years, then went back to school for 6 years and became a dentist.

Instructables

3D Printed Van De Graaff Generator

7.4K Views, 57 Favorites

Space Laser Manual Go-To for Your Telescope

3.8K Views, 29 Favorites

3D Printer Bed Upgrade/Replacement

28K Views, 43 Favorites

Use DesignSpark Mechanical to Duplicate and 3D Print a Decorative Finial

7.8K Views, 43 Favorites

An Almost Reliable, High Precision, 3D Printer: Son of MegaMax (SoM)

149K Views, 1,144 Favorites

Take Control of the Console and Give Your Kids Their Lives Back!

21K Views, 21 Favorites

Twin Size Loft Bed Made From PVC Water Pipe

107K Views, 251 Favorites

Analog Sound Synthesis on Your Computer

42K Views, 137 Favorites

How Use a Flashlight for a Bicycle Headlight

13K Views, 10 Favorites

Palm TX Power Switch Repair

13K Views, 7 Favorites

Crossed IR Beam Camera/Flash Trigger

65K Views, 126 Favorites