Nozzle size indicator
thingiverse
Designed to snap securely into the acrylic frame of the Prusa i3 Pro B printer. This clever design ensures you never forget which nozzle diameter is currently mounted on your printer. No glue or adhesive is required - simply swap out the PLA filament when it's time to print the numbers. To enable this feature, insert the following G-code into Slic3r in the "Printer settings" tab: {if [layer_num] == 16}M600 X30 Y30 Z10 E3 L0; X[pos] Y[pos] Z[relative lift] E[initial retract] L[later retract distance for removal]. In this example, layer 17 will automatically switch to the new color, replacing the old one. I've also optimized the design to accommodate two pressure screws in the back, although this is unnecessary - the Thing fits perfectly within the 8mm-thick acrylic frame.
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