Help needed! Printing MM (PLA, FLEX)
Hello!
I'm a bit confused here with the PrusaSlicer and C1 without MMU3
I know I'm creating unnecessary hassle trying to print the project the way I try, but considering I have only smooth PEI sheet and Satin sheet and my glue stick has run out without possibility to get new one in couple of days I see this way as only feasible.
So what I want to achieve here is to print main part out of TPU on a Smooth PEI sheet with a separation layer from PLA (0.4mm thick).
I have imported my main part and added 0.4mm thick rectangle, arranged all the parts and in Printer settings have selected 2 extruders.
Now the tricky part: Should I apply `Single Extruder Multi Material` setting as well or not?
What I have tried so far is I did not apply `Single Extruder Multi Material` setting and was being able to select Extruder 1 to be PLA, Extruder 2 - Generic Flex (Printing with Overture PLA so this one suits well, as for Overture there's only settings for High Speed TPU available).
In the tools legend I see that both extruders should print, but when I started to print after 2 layers of PLA my C1 just purged some filament onto purge tower and continued printing with PLA without asking to change to TPU althoug there are some lines in GCode with comments about tool change on layer 3 (0.6mm)
Here's the screen shot from the sliced third layer.
Also on the `Color Print` legend I see that for some reason seems like slicer wants to use Extruder 2 by default and when checking temperature legend it shows 230C for the first 2 layers and for all next layers shows only 0C which is odd.
What have I tried as well:
- On the layer 3 insert Color change GCode, then again `Color Print` legend shows as if it will print with Extruder 2 (TPU) up to 0.4mm, ask for color change and from 0.6mm proceed using same extruder and temperature settings show same settings (230C for first 2 layers and 0C for the rest)
- If I set in the settings `Single Extruder Multi Material` setting then temperature legend shows correct settings for PLA and TPU layers (230 for first PLA layer, then 220C for second layer and 230C for all the TPU layers). But as in previous attempts in Color Print legend it does show like from the beginning it should print with TPU, then pause (I have added pause before the last top layers to insert prepared support for bridges to print over) and after pause like I will print with Extruder 1 (PLA).
- Also setting `Single Extruder Multi Material` Setting I am unable to select FLEX profile if it was not previously selected (Why not if I am manually changing material?). And if FLEX is preselected before toggling `SEMM` setting On, then there's red flag appearing near the FLEX filament profile
I am not able to post 3mf project here, so I have uploaded same project to Printables if it is needed for reference (Model link )
RE: Help needed! Printing MM (PLA, FLEX)
A little bit of update.
Tried setting 2 Extruders in printer settings, then set filaments per extruder accordingly and only after ticked setting `Single Extruder Multi Material`. Then I added Color change step on desired layer and sliced. Basically went the 2. route I described previously. As I describer color legend in slicer was showing some odd things and FLEX filament was with red flag but it sliced (with oddly very long waste tower).
I proceeded printing. First installed filament already was PLA so C1 went all in. On the desired layer it actually wiped it's nozzle, unloaded filament and asked to load next one. I loaded TPU and C1 asked which filament type I have loaded, so I selected FLEX and loading process continued without problem.
Print finished and here C1 started to act... It tried retracting filament too aggressively as if it was PLA in the extruder and on the display it was saying that it had PLA loaded, although on the color change I selected FLEX.
So the main question stands, is it correct way to print it? Or how should I print TPU on top of PLA or vice-versa without owning MMU. I'm lost