Well Plate Rulers

thingiverse

A simple pipetting aid fitting most 384 PCR or standard 96 well plates. Place on top of a plate and push down to lock in place. Simply slide the horizontal or vertical rulers to track progress and avoid mistakes. Print as given, using 0.2mm layer height and a 0.4 nozzle. No supports required. Once printed, add the horizontal slider first, then the vertical one (which should go above). You might need to move both sliders several times through the entire length of the track to remove printing imperfections until they move smoothly with _just_ a little bit of friction.