Custom PCR Tube Rack Ends

Update: self stacking version, you don't need an alignment ring.

Customizable PCR tube rack.

1. Print both ends (almost like bookends).

2. Laser cut any hole pattern (I use a Glowforge) OR 3D print an insert (3mm thick) with your own hole size or pattern.

3. Use the 3D horizontal Alignment bars if you want several racks to line up in a row.

4. Use the Vertical alignment rings to stack the racks vertically.

5. Although these parts are press fit, you can glue them in place.