This is a shelf attachment for the Sharper Image 00609 surge protector. The one that came with it didn't fit in the space I had, so I made my own. Confirmed it works well at 0.2 or 0.3 mm resolution, based on your printing times.

Recommended Print settings:

• Resolution: 0.2 or 0.3 mm
• Material: PLA Plus
• Support: None required
• Build Plate Adhesions: Brim or None