Test tube X-Acto blade storage
thingiverse
A small rack for storing hobby knife blades in test tubes is a must-have accessory. It comes in two convenient sizes, perfectly suited for 75mm and 100mm length test tubes. To attach the rack securely to the test tube cap, use a sturdy M2x5mm screw. The cleverly designed hooks made of M3x8 or M3x6mm screws ensure that even tapered test tubes can be accommodated. When paired with my Workbench Tool Organizer, this handy accessory takes your workshop organization to the next level.
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