r/OrcaSlicer

Two steps forward one step back. 2.4.2 did not include any nozzle wipe in multimaterial prints, failing them 9/10 times. So I had to upgrade to 2.5.0 which - as I discovered from Github files - does have the code.

However, can't seem to catch a break, now suddenly in filament settings, under the cooling tab, the "Purify air" setting and fanspeeds that control the exhaust fan are just ... GONE.

Why? Where have they gone?

EDIT:
Looks to be at least a H2D specific issue. I cannot enable "Support air filtration" since the option is completely missing from the Printer Settings dialog, even though the H2D supports it.

I wanted to change the base printer .json file to toggle the option manually. But, the base printer settings have been removed from Roaming/OrcaSlicer/system/ since what once was the "BBL" folder has now been changed in an Orca-specific .opc file (archive) that I can't access or change.

Fix: go to

AppData\Roaming\OrcaSlicer\user\default\machine

Find a / the H2D printer setting profile that you're currently using. Open the .json in notepad++ or basically anything. Right before the "version": [...] line at the bottom, add this line:

"support_air_filtration": "1",

Save and exit. "Exhaust fan" settings will now appear again in filament settings.

Is there a version of Orca Slicer that works reliably with a Bambu account? . I want to use Orca Slicer, but I get kicked out immediately whenever I try to log in.

Ok, please allow me to explain my use case.

Let's say that mechanically the printer can withstand 400mm/s, and acceleration is enough to reach this speed.

This work for "intricate objects" with shot straight lines, but when a model has longer straight lines, the nozzle cannot keep up with the flow, leading to underextrusion in those sections.

I wonder if there is any option that allows me set how much time the nozzle can withstand top speed, and then lower the speed from there to match the the flow limit of the nozzle.

I hope I was able to explain clearly. Maybe it is just my problem, but I often print more technical pieces with lots of straight lines, plain faces, angles, etc.. And I need to lower the overall speed.

Anything will drop to plate regardless what I do. Assembling to try and stack 2 objects does not actually allow me to stack anything either. Everything will drop back to a Z-direction such that it is in contact with the plate. All I can do is drop it below plate level.

What is the point of z-direction at all if it's not even allowing me to raise any object by 0.1mm?

I'm probably being stupid and using the assembly tool wrong. But otoh I'd be fine with a warning and a "yes i want to really move this thing up a bit" dialogue.

Edit: I was stupid. I can uncheck an "auto-drop" checkbox apparently. Thanks swingoak!

I need to use a 3d printer for a project but when i export the gcode and start printing it wants to heat up to 150C instead of the 210C that i put in, is there any reason to why or a way to fix this?

Edit: I didn't read the gcode and didn't see that it would heat up to 210C later, I'm sorry if I asked a stupid question

latest kubuntu 26.04 (7.0.0-38 kernel).

OrcaSlicer crashes whenever I press "slice" or even change between tabs a few times, on projects that worked ~2 weeks ago. also on new projects.

anyone has the same problem ?

Hi, I've been trying out Orca's Adaptive Pressure Advance. Here: Adaptive Pressure Advance - OrcaSlicer Wiki, they write that the optimal PA is less the faster you print which fits my measurements, but, it's completely counter-intuitive. Can you explain why, when the head moves slower and the extruder has more time to gently react, it actually needs higher advance?

I want to print an object with multimaterial supports. The filament is expensive, and needs a high bed temp, but a cool chamber. I want to use cheap HT-PLA supports for perfect interface quality and saving expensive filament.

However, the build plate being hot means the HT-PLA won't stick.

I can either choose:

• Entire support including the feet/pads in HT-PLA
• Entire support in main filament with only HT-PLA interface layer

What I cannot choose is to have the support pads (first layer of supports) be printed with main filament, then build HT-PLA bulk support all the way up to the model.

I tried adding a raft layer, thinking this would add an entire layer underneat the model on which I could then print supports. But the raft layer takes the same material as base-support.

tl;dr - is there a way to specifically set the raft layer to a different filament in such a way that supports are still generated on top of that raft layer?

So I've got a Bambu P1P that has worked fine for some time. I recently had to reinstall Windows 11 and now it can no longer find my printer. I can ping it just fine, it has a static IP address, but I cannot find anywhere to manually set the IP address. The "wifi" icon that I've found mentioned on google is not present.

So how do I get this working? Secondly, why in the heck is this so bloody difficult to configure an IP address?