Dishwasher Cat Magnet

THIS IS A REMIX OF A THINGIVERSE OBJECT:
https://www.thingiverse.com/thing:2806288

My wife wanted a magnetic clean/dirty indicator for the dishwasher. We both like cats so I searched on Thingiverse for cat silhouettes. I found the designs by @wslab and my wife chose Black Cat 10. I downloaded the .stl and was able to hack it in FreeCAD (basically traced it into a sketch) to 5mm thick extrusion, "CLEAN" and "DIRTY" text strings (using Arial Black) cut 2mm out of the front and back, and two voids inside for magnets. The magnets I used are 15mm x 6.5mm x 3mm, that I purchased from Amazon here (not an affiliate link): https://www.amazon.com/gp/product/B077BWCC8D/ref=ppx\_yo\_dt\_b\_asin\_title\_o07\_s00?ie=UTF8&psc=1 Any magnet of the same dimensions should work. I added a chamfer the bottom edge to use to help grip when removing the magnet, but without fingernails it doesn't seem to work as intended.

I sliced it in Slic3r PE v 1.42.0 beta1 at 0.2mm layer thickness. Filament color changes after 2mm, and 3mm. The bottom filament was Hatchbox Red, the middle filament was Prusament Galaxy Black (my only black at the moment), and the top filament was Hatchbox Green. I encoded a pause to insert the magnets before the 4.2mm layer with the Slic3r Custom firmware. I've included the Slic3r project (3mf file) that I used. The current Slic3r PE 1.41.3 stable will load the project file including the custom layer start gcode for the magnet insert, but will loose the filament changes.

I printed this on my Original Prusa i3 MK3S with firmware 3.7.0-RC1. Pictures and videos taken during printing are on this Google Photo Album:
https://photos.app.goo.gl/fMW4xSKwLbmfoGNk6

Until PrusaPrinters supports the FreeCAD file format, you will have to go over to Thingiverse to get the FreeCAD file here:
https://www.thingiverse.com/thing:3532256/files
For now, all PrusaPrinters imports from the .FCStd file format is the thumbnail image.

I can't upload the gcodes here because of the M400 that I use in the pause print gcode. Not sure why (M400 just pauses until the print buffer is empty), but it seems to have tripped the malicious gcode filter.

2019-10-18 - Added STEP file to make remixing outside of FreeCAD easier, and updated the .3mf file for PrusaSlicer v2.1.0. Also added a version that has the words on either side offset from each other to allow better prints when using a transparent middle color.

Print instructions

Licence: Creative Commons - Attribution Category: Kitchen & Dining Print Settings

Printer Brand: Prusa

Printer: I3 MK3S

Rafts: No

Supports: No

Resolution: 0.2

Infill: 20% Gyroid

Filament: Multiple PLA Multiple
Notes:

Added to before layer custom gcode:

{if layer_z==4.20}; Pause to insert magnets
M400 ; wait for movement buffer to empty
M300 ; beep
M104 S0; Turn off extruder heater to avoid too much oozing
; code snippet originally Prusa forums joantabb here: https://forum.prusaprinters.org/forum/original-prusa-i3-mk2-s-others-archive/pause-print-in-gcode/#post-125758
G1 X10.000 Y200.000 E0; parking position GET THE PRUSA TO STICK IT'S TONGUE OUT! (edited to revise Y coordinate)
M400; wait for bed to stop moving
M300; beep again
M84; disable motors (may not be necessary)
M0; user stop
G28 X Y; Home X and Y (only) to correct for accidentally moved bed or extruder (it is assumed Z didn't move because that is a harder axis to manually move).
M109 S[temperature]; return nozzle to printing temperature
{endif}