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Multi color print without an MMU on MK3S

Hero Shot of the Week

Summary

How to print a layer that has multiple colors.

Work Process

Introduction

So this was in a workshop at Fab25 that I followed. It was quit quick so my notes were mostly about it exist. So I searched on how to do it and found this guide.

My work

Making the model

To make the model I just created a cube inside Prusa Slicer

Right click > Add Shape > Box

Resized my cube with to have the correct size (a flat board).

Than downloaded an SVG file. Modified my cube with the SVG file

Right click Cube > Add modifier > SVG

Prusa Settings

(final version so that you do not make the same mistake as me).

You will need to be in expert mode !

Enable multiple virtual heads:

Printers > General > Capabilities

Setting

In the Extruder X (where X is a number) you can change the color so that you can better visualize what you want.

Than go to

Printers > Custom G-Code

Find the Tool Change G-Code Section and copy-paste the following line:

M600; Filament change

Printing

So I first went with the settings that I wrote down and remembered. It almost worked.

The only issue was that it did not asked for manual filament change so everything was white.

Than I found this guide. Corrected what I missed and it worked.

The only issue is that when I do a filament change it, at one point to clear the head or the color it extrudes a ton of filament in one place. Than moves over it. But as it first extruded a big lump it X / Y crashes...

So I accidentally removed the color change print place (or however you want to call it) while trying to flatten it a little.

This is getting risky. Some stuff might go where it isn't supposed to.


Learning Outcome