How to lower flush volume?

Bambu Lab A1 Series General Discussions
1

I lowered the “Flushing volumes” multiplier, but poops are still the same size. (I weighed them with a gram scale.)

How do I actually lower this volume?

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2

Did you click the recalculate button after changing the multiplier? I like AMS Purge Calibration V2 by Ciuf_Ciuf - MakerWorld for setting up purge volumes to minimize waste.

3

I did, but it didn’t make any difference.

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How to Purge to Object in Bambu Studio Part 1

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Yes, I have read and watched all this. I’m trying to reduce the color change flush volume, not put it somewhere else. What I’m calling out here is that changing the volume multiplier has no effect: I observe that by weight the amount flushed is exactly the same.

I see this hasn’t been the experience of others and I would like to understand why this setting is not working for me.

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8

Rather than weighing poops, watch the Purging Volumes window and see if the volumes change when you change the multiplier. Ignore my earlier comment about clicking the recalculate button - that’s not needed.

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9

It is now also possible to save 60% on purges on the A1 and mini

https://www.reddit.com/r/BambuLab/comments/18lbxyf/it_is_now_also_possible_to_save_60_on_purges_on/

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10

Well it really depends on the print. I’ve deleted the purge block on some prints and that saves a ton. But when your printing multi color your going to have waist and depending on how many times the AMS has to load and unload colors will make a huge difference. Optimizing the the print will really help.

Another trick I’ve heard is on larger prints you can use the infill area as your purge.
Seeya
M1

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11

There is no purge block. The block that prints is a prime block that helps get extrusion up to speed before a print resumes. The method I linked to earlier saves a LOT.

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12

Did you try changing the flushing numbers directly without using the multipler?

Are you lowering the flushing volumes below 107, triggering the warning message? Maybe your flushing volume was already at or close to the minimum and Bambu ignores values lower than the minimum flush.

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Reducing flush volume takes a two-pronged approach in Bambu Studio. You lowered the “Flushing volumes” multiplier, which is great! But, the purge block (the “poop”) might still be set to a standard size. Here’s how to tackle both:

1- Flushing Multiplier: You’re on the right track! Keep experimenting with lowering this value. Aim for around 0.2 while checking for color bleed in your prints.

2- Prime Block Size: Look for settings related to “prime block” or “purge block” size. This block gets extruded before printing to ensure consistent flow. Try reducing its size to something small, like 10mm x 15mm.

By adjusting both these settings, you should see a significant reduction in wasted filament during filament changes.

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Sounds like a solid response. I’m going to try it now. Thank you for the recommendation! There’s a lot to learn for us newbies and help is appreciated.

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15

if you click “recalculate” you are basicly clicking “default settings”

when you adjust the value in the multiplier. you simply need to press or click anywhere in the flushing volume window and you will see the numbers change.
then you just click on “ok” or “verify” or whatever it is in english. it’s “bevestigen” for me.