Customizable classic bike license plates

by bobm123, published

Customizable classic bike license plates by bobm123 Oct 18, 2017


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Generates a vintage style mini license plate with your name on it. Just the thing for your bicycle!

The style is like the ones you find in gift shops at various tourist traps. My sister was always sad that she could never find one with her name. This thing is for you Monica! If your name is too long try adjusting the letter spacing, then the letter size.

Of course, you are not limited to your actual name and state, (or province or country for that matter), so have fun with that!

The font I used originally is available here:

You might want to download the .scad file and run it locally since thingiverse customizer doesn't have that one available.

Thanks for looking!
Bob M

Custom Section

Manual Two Color Printing

How I did it on my Prusa i3 Clone single color printer. I've never used it, but I am told some slicers allow for a manual process change. But this is how I did it using Slic3r.

Note, this assumes you are comfortable modifying your printer's gcode files and that they are compatible with your printer. I suggest you try printing a small test file first, maybe a 20x20x5 mm box to see if it works for you. Or if you prefer, you can just snip the background color filament and jam the second color in after it as it starts the letters. This leaves a bit of the old color in the extruder, but it should switch before too long.

First, turn on "Verbose G-code" output under "Print Settings->Output options". This will make it easier to find the layer for switching color, then export the .gcode file as normal. Open this file with a text editor and find the comment line ";End of Layer 10". It should be around line 7281. After that line, insert the following code I found on the interwebz sompleace:

;End of Layer 10
;start pause code
G91                  ; Put in relative mode
G1 Z10 E-60          ; Lower bed by 10mm, retract 60
G90                  ; Put back in absolute mode
G1 X0 Y0             ; Zero (home) the X & Y
M0 Click To Restart  ; Pause and wait for the user
G91                  ; Put in relative mode
G1 Z-10 E60          ; Raise the bed back up 10mm, load 60
G90                  ; Put back in absolute mode
;end pause code

Save the modified .gcode file (I usually add 'pause' somewhere in the filename).

When you run the print, it should home the print head after printing the background layer (assuming .2 mm layer height) so you can eject the background color and load a new one for the text. I usually try to retract about 50 mm of filament, change to the new color then extrude about 50 mm. Then send your printer a 'RESTART'. Using OctoPrint, it should be on the main control panel. Its actually not critical if some of the old color is still in the extruder, it should start print the new one some where in that ext layer, but you don't want to switch too early, that could mess up the background.

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