I always like to see what is going on with my printers. Sometimes I wonder what movement the extruder motor is making (extruding, retracting, slow, fast, etc.), which is not always so visible on the Prusa i3 MK2 / MK2S / MK2.5 / MK3.
Hence I have designed an indicator that you can magnetically snap onto the axis of the NEMA extruder stepper motor. Just print the design, glue a magnet with some super glue onto it (let the glue dry...) and snap it on the motor (make sure to glue the magnet to the 'raised' side). These print in only a few minutes.
Just for the fun I designed a "Dutch Windmill" version. For the purist: unfortunately the extruder motor rotates clockwise when extruding while original Dutch windmills turn counter clockwise :-). Also added a version with smileys. Pls feel free to make your own design and do not forget to post a "made one"!
I have uploaded 5 versions:
- Indicator version for a 8x3mm Magnet
- Windmill version for a 8x3mm Magnet
- Smiley version for a 8x3mm Magnet
- Lightning version for a 8x3mm Magnet
- "Turbine" version for a 8x3mm Magnet
Mikolas Zuza from Prusa Research has also posted an article about this indicator / visualizer on Prusa's website: https://www.prusaprinters.org/visualize-extruder-motor-movements/
On Thingiverse, Insanity682 pointed rightfully out that he posted already a magnetic attachable extruder indicator before me - of which I was not aware (https://www.thingiverse.com/thing:2285254), so credits to him. Following this notification I could find that Tinkerer did something similar in 2013 already https://www.thingiverse.com/thing:119000), so kudos to him / her as well.
Maybe there are even more! Anyway, credits to whomever deserves it, I just hope people like it.☺
Neodymium Magnets are easy to find
--- This was initially posted by me on Thingiverse on November 11th 2017 ----