Grommets for Modular Tubing Reel Storage Dispenser

thingiverse

My wife needed to be able to store and dispense a variety of tubing at work so I designed this reel system that can sit on a pole inside a really useful box and the tubing is fed through grommets that are a snug fit. This thing is just for the grommets. The reels and reel mount are in a separate thing here. https://www.thingiverse.com/thing:6379136/I made grommets to go on the outside of the box with different sized holes in it with nice knurling I'm quite proud of. They are basically a hollow bolt with a nut that screw into a hole drilled into the side of the box (use a step-drill to drill the holes in the plastic - not a regular twist drill or it will crack). The text is based on the outer diameter of the tubing plus 1mm. They drilled some of them out to get the right level of friction if needed so I provided a blank one too that can be drilled to any hole-size - you can tell the slicer to make the centre 100% infill to save some filament but still be suitable to drill. There's also a little plate you can modify and stick on the side with details of the tubing. I've printed versions that are exactly 4mm, 2mm and 1.8m diameter with no extra tolerance with no text you could use to dispense filament or PTFE tubing with if you wanted (although the bolts are quite large and wasteful of filament for such small holes).No supports needed. Some of the STLs will need rotating in your slicer to have the large flat side on the bed.