Sunday, April 1, 2018

Glowing plasma created by a high speed jet of water

Spraying water onto a piece of glass will create plasma (no, really!).

Hydraulic power unit eg:

Hydraulic ram:

Sapphire orifice:

150K psi gauge was found on eBay after a very long search.  Rare!

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Monday, March 12, 2018

3D resolution test on the Form2

Here are some high-res photos of the 3D SLA test from Thingiverse (  These were printed on the Form Labs Form2 desktop SLA 3D printer.  The material is Tough V5.  The model on the left was printed with 0.1mm layers, and the one on the right with 0.05mm layers.  These models were printed directly on the bed of the printer in the orientation shown here (ie the wood tabletop is in the same position as the printer model base).

Sunday, January 28, 2018

Flashing Light Prize 2018 - Sunscreen, UV, and neon

A very unusual way to flash a neon lamp using sunscreen.

Aerolux lamps:

Good selection of gear motors at Jameco:

Awesome Keithly SourceMeter:

This video is a freebie for Patreon supporters, and I will donate any awards to a STEM education charity.