Parametric Test Tube Rack

A parametric test tube rack designed to hold 9 test tubes but configurable to hold any number you can fit in a rectangle. This prints well in PLA but the result may have trouble in the autoclave where temperatures can reach 130C. I printed several in Polymakr PolyFlex (like NinjaFlex but stronger, I think). PolyFlex can handle reheating to about 200C without any trouble so it's fine for the autoclave.

*Note:* Be careful about the material you use to print this, especially if you deal with caustic chemicals or biological specimens in your lab.