Multicolor print with different nozzle sizes  

RE: Multicolor print with different nozzle sizes

Can you upload your 3mf project file? Hard to diagnose without seeing your settings. Make sure it's zip compressed before you upload it, or the forum software will reject it (silently) 

RE: Multicolor print with different nozzle sizes

Here we are... 🙂

RE: Multicolor print with different nozzle sizes

Huh, interesting. Yes, with your configuration you can only have one or the other.

I played with it a bit and I noticed that if I move Black and White around, so the model is printing with "default" and the height range modifier uses extruder 3, the paint-on seems to work. See screenshot. Why, don't ask me.

RE: Multicolor print with different nozzle sizes

Thanks! I have to check this out. 🙂 

RE: Multicolor print with different nozzle sizes

I've done a lot of text printing. The trick is to use a fine extruder 1 for the letters, and fill with the higher number extruders. This way the letters are printed first and not blurred. It works best to print face down with the visible letters on the sheet.

RE: Multicolor print with different nozzle sizes

It's always been one of those weird limitations where you simply cannot use the 'sliced view color change' and the tool painter at the same time. The tool painter will simply 'turn off/cancel' the sliced view color change. That's why painting in the red/grey into the logo cancels how you currently have your black set up.

One workaround is to just also paint in the black like you did the red and grey. Little annoying because of the numerous little islands.

Better workaround is to simply use your layer height modifier to set extruders to black. Very much like using the sliced view color change without actually using the sliced view color change specifically to avoid the painter tool conflict. You even already had the layer height modifier setup; it just wasn't actually doing anything.

Another thing to consider is using the paint tool will get you perimeters in the text rather than the zero-perimeter look of the white text. If you want to get the same effect of the white text then you'd need to setup precisely placed modifer shapes to do the color/extruder change instead of the painter tool; example in the bottom right card.

file:

fixed example

RE: Multicolor print with different nozzle sizes

Thanks! As you noted, workaround #1 should works, but in real production... I cannot imagine to adapt every plate like that 😱 

Regarding workaround #2, here I'm not sure what you mean with "layer height modifier are doing nothing", as it visibly changes layer height from default 0,25 mm to 0,15 mm which I need for letters layers. I think that I also tried set whole file without this (whole model was in 0.15 mm layer height), but effect with colors was the same.

More interresting for me is that painting logo and black extruder with 0,25 mm nozzle doesn't collide, as last two layers (extruder 5) are made when logo is finished. 

Anyway, I like to first check your fixed example file. You're right that logo without perimeters inside looks way better 😊 

RE: Multicolor print with different nozzle sizes

Regarding workaround #2, here I'm not sure what you mean with "layer height modifier are doing nothing", as it visibly changes layer height from default 0,25 mm to 0,15 mm which I need for letters layers. I think that I also tried set whole file without this (whole model was in 0.15 mm layer height), but effect with colors was the same.

That's my mistake, I overlooked that it's a .25 height print since I do a lot of .15. I'll change my statement to 'you can also use that same modifier to change extruders along with layer height.'

More interresting for me is that painting logo and black extruder with 0,25 mm nozzle doesn't collide, as last two layers (extruder 5) are made when logo is finished. 

The last two layers are only using the black .25 nozzle; there is nothing to collide with. The white/grey/red are all in layers before the black .25 comes into play.

Even if they were all on the same layer, the slicer can make them all work together. But having the layer fully printed in .25 will look better than if it was mixed because small text creates small spaces that larger nozzles leave holes in: example.

ou're right that logo without perimeters inside looks way better 😊 

I did it once as an example but it's something that is much easier to create and precisely place while in the CAD software phase. You can then convert the box into a modifier box after it's imported into the slicer. Much like painting tiny islands, it can become daunting if you manually do it in just slicer every time.