Please please just add an option to disable purge

Hey :wave:
I got my new printer, I love it, it feels so modern and advanced but immediately one thing stands out: there’s just so much wasted filament

I am printing small models, repeatedly, I power my printer on and off, I only use a single filament colour that is always loaded. I don’t have an AMS. I do not want to edit GCODE or my create random printer/filament profiles. I just want to disable the needless purging with a toggle. My previous printers didn’t purge even 10% of this amount. I know PLA doesn’t cost that much. I just don’t want the mess or feeling of waste.

There’s so many posts about this, I don’t really understand why it hasn’t been added already?

Examples from these forums:

  1. Feature Request - Ability to disable initial purge at print start
  2. How to eliminate Purge
  3. How to stop purging when only one colour is being used
  4. Is there any way to NOT purge on colour changes?
  5. I need some help: how do I deactivate the purge?
  6. So much purge - tower, infill, support, poop, why does it do them all?
  7. Initial prime/purge test pattern
  8. Is there any way to stop the wasteful purging for each print? P1P

Examples from Reddit:

  1. https://www.reddit.com/r/BambuLab/comments/15sxl9n/is_there_a_way_to_disable_nozzle_purging_lines_in/
  2. https://www.reddit.com/r/BambuLab/comments/10blj9b/stop_purging_filament_in_onecolour_prints_with_ams/
  3. https://www.reddit.com/r/BambuLab/comments/17av90h/disable_all_purgeprimeload_lines_at_start_of_print/
  4. https://www.reddit.com/r/BambuLab/comments/18z2pr6/disable_ams_purge_to_purposely_mix_filament_in/
  5. https://www.reddit.com/r/BambuLab/comments/187yli3/disable_prime_purge_wipe_tower_for_layer_colors/
  6. https://www.reddit.com/r/BambuLab/comments/11uhtto/disable_pooppurge_rower/
  7. https://www.reddit.com/r/BambuLab/comments/10ba1w5/is_it_possible_to_disable_purging_on_single_color/

Examples from Github:

  1. Option for 0 purge on full-layer colour change · Issue #4328 · bambulab/BambuStudio · GitHub
  2. Feature Request: Check box to exclude initial purge · Issue #316 · bambulab/BambuStudio · GitHub
  3. [Feature Request] Ability to disable initial purge · Issue #223 · bambulab/BambuStudio · GitHub
  4. Purge Yes/No or Smarter Purge - stop wasting filament by default for each new print · Issue #1300 · bambulab/BambuStudio · GitHub
  5. Significant reduction of purged filament · Issue #2506 · bambulab/BambuStudio · GitHub

Please just add a toggle or check? box :broken_heart:

1 Like

If you ever had to switch from PETG or ASA to PLA, you would understand the purge. Even on my other printers, unless I did a cold pull you would still need to purge 200-300mm.
A good PLA ex. would be going from Red to White.

2 Likes

I already understand the purge, I know why it exists and I know what it does. I just don’t want to use it :upside_down_face:

3 Likes

Here’s two methods that can help with that. I used both and saved them as specific profiles and they work well for me. However, I also keep a watchful eye over the printer at startup and I would say, 30% of the time, I have an aborted stop because I used these shortcuts.

But as @lion7718 has pointed out. Purge has a purpose and if you don’t know what you’re doing, then I would expect a follow up post pointing out how easily your printer gets clogged. :smirk:You disable purge at you’re own peril.

Oddly i agree with the OP on this option. But if you turn off the machine you should repress the software switch again. Or even yet a reslice to reset the 0% purge button.

But you will never see this as it would open up new users to grave mistakes. Even I forget to put the build plate back on when prototyping quick print small items. :roll_eyes: :older_adult:

4 Likes

Oh yeah, that right there. I fess up too. :face_with_diagonal_mouth:

1 Like

Thanks but as I and others have said, I don’t want to mess around with GCODE :slightly_smiling_face:

Why though? Filament is loaded before switching off, it is loaded when powered on, why purge? Swipe on the build plate and clean nozzle, fine, but why create that large blob?

Maybe I rephrase it slightly: My Prusa did waste even 20% of what my BL printer wastes with the same usage patterns. Is it not possible to behave more like a Prusa in this case?

Anyway, is this forum even a good place to make a feature request? Or is Github a better place for that? Or somewhere else?

If it was me I would do it at the github site. The right group will see it.

2 Likes

OK done!

If any other comrades feel the same then add your thumbs to that issue :arrow_double_up:

3 Likes

I may also suggest. Make your suggestion to the team over at Orca Slicer. They have done wonders by adding quality of life enhancements to their version of Bambu Studio. You can make the suggestion on their Github page. You will want to first make sure it wasn’t already suggested.

The link to their Github page can be found here:

If you haven’t loaded Orca on your machine, you’re missing out on many great features. Orca can coexist with BS, so there’s no downside. I used both, but after Bambu began pushing marketing on their BS landing page, I switched to Orca, which lets users choose their landing tab. Bambu doesn’t prioritize users’ interests, while Orca, made by hobbyists for hobbyists, focuses on ease of use and features. Orca also allows for bypassing Bambu’s forced Makerworld promotions which cannot be escaped in BS.

Here’s just one example of what I mean about the differences. The preferences list in Orca are substantially deeper than BS. This example is only the top portion of each preference page but it should provide a glimpse as to the fundamental differences in “service” philosophies.

Bambu Studio

Orca Slicer

4 Likes

That is awesome, thanks for the advice!

The short story is that the plastic thats in the meltzone is not the same as the filament that is in the feedzone. So for best homogenous result a purge is made to have the same result every time.

The few grams it purges can be tweaked to your own desire after two minutes of reading the search results for “purge filament, bambu labs printer” with very little effort.

For multimaterial prints you can have the purges into infill if the models are big enough👌 but this is also a “your milage may vary” situation.

I hope this was clear enough without too much technical jargon.

P.S.
Personally i find the stock settings a very good median for the wide range of filaments these printers can handle. I for one do alot of asa/tpe models and i had to increase the purge amount for the tpe as its very runny and would sometimes leave particles in the meltzone for the white asa to be stained pink from the red ninjaflex.

BE WARNED!
Your result may vary.

1 Like