Adhesive-backed pipette holder for Gilson pipettes (1×, 2×, 3×)

thingiverse

I absolutely love storing my pipettes in the Pipette Holder because it maximizes bench space and stores pipettes far enough from the benchtop that I can easily hang a tipped pipette.\nThis pipette holder (it comes in varieties storing 1, 2, or 3 pipettes in one unit) is designed to mount to a shelf or wall with high-quality double-sided tape. Go to the hardware store and get the good stuff; you don't want your holder falling off the wall and breaking the tip of your 10 μL pipette.\nThe design of this holder is somewhat, uh, modernistic, but simple blocky shapes print rapidly compared to fancier shapes. My design prints two hours faster than this Pipetman-like design.\nCompatibility\nFits: \nLabcon Pipetman\nEppendorf multi-channel\nDoes not fit: \nRainin multi-channel\nThermoFisher Finnpipette\nWhich holder do I want?\nThe 2× and 3× holders store pipettes with about 10 mm (0.4 in) of space between them, which is both spacious and usable. If you want more space between pipettes so that your hand can fit between them more easily, you should just print multiple copies of the 1× holder and space them as you like.\nPrint Settings\nSupports: \n Doesn't Matter\n \n Resolution: \n 0.2–0.3, and at least 2 mm of total bottom thickness (10 layers)\n \n Infill: \n At least 30%\n \n Notes: \n This requires no additional support if you print it vertically (the default orientation). You can also print it horizontally (on its side) for extra strength, but you'll need to add supports.\nYou really don't want this print to be warped on the base, so do everything in your power to prevent that (heated bed, clean platform, brim). I have tried to mount a print whose edges had curled up, and the curl just acted as a weak area of adhesion where the rest of the adhesive slowly peeled off under the weight of the pipettes. I recommend filing the base flat (check it with a straight-edge) and then sanding the surface smooth for best adhesion. If you do this, increase the number of solid bottom layers so that you can sand more material off.\nPost-Printing\nFile the bottom surface completely flat, using a straight-edge to check in all directions.\nSand the bottom surface smooth. A smoother finish will let your double-sided tape bond more securely.\nWipe the back of the pipette holder and the mounting surface with 70% ethanol to remove any oils. Allow to dry completely.\nPlace long strips of good-quality double-sided tape horizontally along the back of the pipette holder.\nPress the holder onto the surface. Check the manufacturer's instructions to see if there is a zero-load curing period for your tape, and follow it. I suggest that you temporarily clamp it to the wall somehow (with sticky tape, probably) and don't put any load on it for at least 24 hours.\n\n\n \n \n Change history\n20 Nov 2016\nAdded a small flange sticking above the top of the holder. I noticed that in previous cases where the holder unstuck itself from the shelf, it was because the holder unpeeled itself over a very long period of time starting from the top — tape is weak to peeling. Now that there will be adhesive on this raised flange, I hope that the force on the tape will be more like pulling, which tape is strong against.\nUpdate: Yes, this change has worked! After filing and sanding the bonding surface flat and smooth, and clamping the holders to the shelf with masking tape for a week, these pipette holders have stayed firmly in place for two months with no peeling or drooping.\n\nRedesigned the holders to use even simpler geometry in Tinkercad.\nShortened the holders just a little bit more and made them thinner to properly fit the tape strips.\n6 Jul 2016\nShortened the holders to bring the pipettes closer to the wall/shelf, reducing the amount of peeling force they exert on the double-sided tape joint.\nAdded mouse-ears to the corners of the model to combat warping. These mouse-ears should be removed before mounting.\n17 Jun 2016\nInitial release.\n\nTinkercad source document\nhttps://www.tinkercad.com/things/c0j4KzJU1yG-longer-double-pipette-holder