Lyophilizer Tube Rack/Holder for 1.5-2mL Tubes

I work in a laboratory space and we needed a tube holder for our lyophilizer and I couldn't stand for the price of what was being charged. Thus, this 3D print. This was designed for a 900mL lyophilizer glass holder, but it's modular nature allows it to be assembled for smaller glasses. To assemble, parts will be connected in order of pt1 to pt4 building upwards. To make a permanent connection, I used Gorilla Super Glue. This rack holds our 1.5mL snap shut tubes.