Where's the "enable air purify" settings and fanspeeds in the 2.5.0 nightly build?

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.

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u/Boxman90 — 7 days ago

Force nozzle wipe after every nozzle change (H2D)?

Is there a way to force a nozzle wipe in the Gcode after every nozzle change?

Just had an expensive print fail because the Bambu H2D is extremely sketcy about when it does or doesn't wipe its nose on the rubber block. Sometimes it does, and then it doesn't for 10+ layers. Resulting in it heading over to the prime tower with a blob of snot stuck to it and knocking the entire prime tower over.

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u/Boxman90 — 7 days ago

If I'm not allowed to move objects in the z-direction, why include it in the move-tool at all?

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!

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u/Boxman90 — 9 days ago

Would it be possible to select a different filament type for the Raft layer only?

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?

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u/Boxman90 — 9 days ago

AC Compressor Pulley wobbly - bearing 100% fine. Help me understand this failure mode?

I have a 2007 Volvo model V50 (4 cyl 1.8 petrol B4184S11).

Unfortunately, my girlfriend overheated it (accessory belt snapped, which drives water pump), so over the past week I've had to do a head-gasket and cylinder-head rebuild.

When taking it apart, I noticed the AC pulley was wobbly. Not just a bit, VERY wobbly. Easly 2mm perpendicular runout. Easy fix, I thought, bearing shot. But keep reading....

I removed the clutch, pulled the circlip and pulled the pulley off, and noticed that it was very difficult to actually pull it over the lip in front of the circlip. Once on the lip, the whole thing felt quite solid and I had to wiggle a good amount to get it clear.

Long story short, the bearing is 100% fine. No play, no noise, runs smooth. I see no signs of gauging / wear on the inner surface where the bearing sits on the compressor hub. So I put the thing back, and found that it wobbles on the actual hub. As if the hub has shrunk. I don't see obvious galling or wear on the hub shaft either. So I'm at a loss.

Now I could understand this is if the bearing would've been seized and the whole assembly had spun over the hub, thus wearing and grinding it down, but the bearing is absolutely fine. I am extremely puzzled. I'm struggling to come up with a mechanism that explains how the hub shrunk the amount it did to allow for so much play.

Ideas? Thoughts?

p.s. the AC compressor is driven by a separate belt, hence not the cause of the accessory belt snap

u/Boxman90 — 4 months ago

Looking for a productivity app to track project progress, am overwhelmed by AI suggestions. Here to get real advise

Basically what I want, is a program or an app that allows me to log and keep track of all my personal projects, and maybe chores/things I still have to do.

I'm looking for something that has a progress-bar on how far a project is completed, when I started it, how long a certain project has been running / open / not worked on - something that allows me to just dump all tasks relating to a project in it and then allows me to prioritize it.

So far, google and AI have only suggested (shocking) AI cloud-based stuff - not looking for that, I just want something local.

Not a problem if it requires a bit of setup.

What do you guys use?

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u/Boxman90 — 5 months ago