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blog:240913_3d_schild_prozess [2024-09-13] – volkerblog:240913_3d_schild_prozess [2025-01-01] (aktuell) – Externe Bearbeitung 127.0.0.1
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 ~~META:  ~~META: 
  creator       = Volker  creator       = Volker
- date created  = 2024-09-13+&date created  = 2024-09-13
 &date modified = 2024-09-13 &date modified = 2024-09-13
 ~~ ~~
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 ** The full documentation including screenshots and example files can be found at my Printables account: **\\ ** The full documentation including screenshots and example files can be found at my Printables account: **\\
-[[https://www.printables.com]]\\+[[https://www.printables.com/model/1005970]]\\
 \_ \_
  
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 So ... that was not too hard -- we have the second colour in place. But how do we get the next colours printed without tearing through, what's already printed? By setting a sufficiently high Z hop distance! That way, travel moves will always fly over printed parts. That's also why this process only really works for flat objects ... like signs 🤓 So ... that was not too hard -- we have the second colour in place. But how do we get the next colours printed without tearing through, what's already printed? By setting a sufficiently high Z hop distance! That way, travel moves will always fly over printed parts. That's also why this process only really works for flat objects ... like signs 🤓
 +<WRAP caution>
 +**Make sure to turn off ramping lift** or other more fancy implementations of Z hop! In PrusaSlicer, this is both a machine setting as well as a possible override -- both must be off. You can turn on the display of travel moves in the sliced print view and make sure that the Z hop acutally takes place as set up.
 +</WRAP>\\
 +\_
  
 All we need to do is to let the model for the next colour hover even higher (say, Z=25 mm) and put more //after layer-change G-code// like this All we need to do is to let the model for the next colour hover even higher (say, Z=25 mm) and put more //after layer-change G-code// like this
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 {{ :blog:ig24:240913_4.jpg?400 |}} {{ :blog:ig24:240913_4.jpg?400 |}}
 +
 +<WRAP caution>
 +**One word of caution:**
 +
 +G92 messes with the origin of the coordinate system. Since end-stop positions are maintained in modern firmware (at least for Marlin-based including Prusa), you should not be able to crash your nozzle into the bed on subsequent prints. But I've had nozzle jams due to the nozzle remaining at Z=0 for multiple layers after printing a sign with this method. Since the origin is reset during power off, just do a hard reset or power cycle your printer after each sign printing job!
 +</WRAP>\\
 +\_
  
 I really enjoy making signs like that. They also make great gifts -- like the "machine operation only by engineers" sign showcased here. I really enjoy making signs like that. They also make great gifts -- like the "machine operation only by engineers" sign showcased here.
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