Midiprep rack 15 mL conical tube adaptor

Adaptor for the Invitrogen PureLink Nucleic Acid Purification Rack (https://www.thermofisher.com/order/catalog/product/K210013) so that you can use 15 mL conical (Falcon) tubes instead of 50 mL conical tubes when eluting your DNA from midiprep or maxiprep columns. Gcode is for a set of 4 adaptors. Prints well with PLA.