RE: PrusaSlicer 2.9.4 with built-in filament calibration
Just started to play with this and it's really great! Something I'd like to see is bridge optimization. This thread shows some of the issues-
I actually think the slicer needs a bit more sophistication and some additional "knobs" to turn to optimize bridges, but a tool to just get the basic speed, flow and fan correct would go a long ways.
RE: PrusaSlicer 2.9.4 with built-in filament calibration
The cynic in me thinks that Prusa don't want people calibrating and optimising 3rd party filaments so they don't provide the tools that help you do so. They want you to buy their own filaments. It's a marketing tactic.
RE: PrusaSlicer 2.9.4 with built-in filament calibration
Just started to play with this and it's really great! Something I'd like to see is bridge optimization. This thread shows some of the issues-
I actually think the slicer needs a bit more sophistication and some additional "knobs" to turn to optimize bridges, but a tool to just get the basic speed, flow and fan correct would go a long ways.
I have those in my stand-alone calibration tool: https://github.com/hyiger/filament-calibrator I just haven't had time to port them across yet
RE: PrusaSlicer 2.9.4 with built-in filament calibration
The cynic in me thinks that Prusa don't want people calibrating and optimising 3rd party filaments so they don't provide the tools that help you do so. They want you to buy their own filaments. It's a marketing tactic.
Not sure. I think it's more laziness on their part. Also, remains to be seen what is exactly going to be included in the mythical 3.0.0 release.
With regard to the built-in profiles for their own filaments, I've found them to be "adequate" but still in need of adjustment.
RE: PrusaSlicer 2.9.4 with built-in filament calibration
Just started to play with this and it's really great! Something I'd like to see is bridge optimization. This thread shows some of the issues-
I actually think the slicer needs a bit more sophistication and some additional "knobs" to turn to optimize bridges, but a tool to just get the basic speed, flow and fan correct would go a long ways.
I've created a fan tower as well as a "YOLO like" flow tool. Please give it a try: PrusaSlicer 2.9.4 - Calibration 0.0.5
RE: PrusaSlicer 2.9.4 with built-in filament calibration
So far so good. I've only done temperature towers before. I'm having trouble with the retraction towers. Figured it was wet PETG so I dried it. I'm still getting the finest spiderweb-like strings between the towers, but the retraction distance has no effect. (Core One + & Elegoo black PETG Rapid) The strings are so fine that they get blown away by the fan, or break when the part is removed from the build plate. I think the seam location also needs to be in a better place, or maybe it's intentional, but one of them is right where the strings begin or end. I'll dry the filament again and continue on with flow, but IMO this is a fantastic addition to the slicer.
RE: PrusaSlicer 2.9.4 with built-in filament calibration
So far so good. I've only done temperature towers before. I'm having trouble with the retraction towers. Figured it was wet PETG so I dried it. I'm still getting the finest spiderweb-like strings between the towers, but the retraction distance has no effect. (Core One + & Elegoo black PETG Rapid) The strings are so fine that they get blown away by the fan, or break when the part is removed from the build plate. I think the seam location also needs to be in a better place, or maybe it's intentional, but one of them is right where the strings begin or end. I'll dry the filament again and continue on with flow, but IMO this is a fantastic addition to the slicer.
TBH, I haven't looked carefully at the retraction tower. Thanks for the feedback. I'll move the seam to the back and test it myself today.
RE: PrusaSlicer 2.9.4 with built-in filament calibration
I really like this (having manually created these calibration models for some years.)
Some comments after my first use:-
However I would like a "quick calibration" version which does the same calibrations in small versions where I don't need absolute accuracy, or would rather use up the filament when I'm closer to the final target.
Also it would be convenient if there was a dialog box to just directly enter the chosen values and it would automatically adjust the current filament values.
Finally, the order of the calibration tests is odd (from my POV) - eg I would normally calibrate max flowrate directly after optimal temperature - as retraction and pressure advance are affected by max flow (as is extrusion multiplier).
RE: PrusaSlicer 2.9.4 with built-in filament calibration
Oh, and a fan test...
RE: PrusaSlicer 2.9.4 with built-in filament calibration
Oh I just realised there are a bunch of tests listed in the calibration guide but not yet implemented - I guess this is also effectively a development plan.
[and the forum won't let me edit or I would have compressed to one post]
RE: PrusaSlicer 2.9.4 with built-in filament calibration
So far so good. I've only done temperature towers before. I'm having trouble with the retraction towers. Figured it was wet PETG so I dried it. I'm still getting the finest spiderweb-like strings between the towers, but the retraction distance has no effect. (Core One + & Elegoo black PETG Rapid) The strings are so fine that they get blown away by the fan, or break when the part is removed from the build plate. I think the seam location also needs to be in a better place, or maybe it's intentional, but one of them is right where the strings begin or end. I'll dry the filament again and continue on with flow, but IMO this is a fantastic addition to the slicer.
Im 99% sure the seams are placed there intentionally..the idea is to basically encourage stringing so moving the seam is counter-productive in a retraction test.
With some brands of PETG I've found that there will always be a tiny amount of stringing when doing the retraction test, regardless of how dry the filament is.
RE:
I really like this (having manually created these calibration models for some years.)
Some comments after my first use:-
However I would like a "quick calibration" version which does the same calibrations in small versions where I don't need absolute accuracy, or would rather use up the filament when I'm closer to the final target.
Also it would be convenient if there was a dialog box to just directly enter the chosen values and it would automatically adjust the current filament values.
Finally, the order of the calibration tests is odd (from my POV) - eg I would normally calibrate max flowrate directly after optimal temperature - as retraction and pressure advance are affected by max flow (as is extrusion multiplier).
You can't really choose the values until after the model has printed and you have inspected it. If you add the value to either PrusaSlicer or Filament DB it will sync back to both. Let me think about it though. It might be worth having a separate page for this.
Max flow rate determines the cap on print speeds. Generally (in my opinion) it's better to run it after EM and PA have been dialed in. It might be possible to create a configuration option to allow you to change the order of tests in the menu to suit your workflow.
RE: PrusaSlicer 2.9.4 with built-in filament calibration
More questions on retraction. Many profiles from Prusa don't have the box checked at all, so I assume that means zero retraction. Maybe that's why my test towers didn't have any change from top to bottom, if not much is needed. I've read AI stuff that says the Nextruder doesn't need much. Other Prusa profiles seem to be around 0.8mm, if it's used at all. A lot of retraction can give rise to heat creep, and that does seem to be an issue for some people with the Core One. So, I'm thinking the number will be between zero and tiny!
RE: PrusaSlicer 2.9.4 with built-in filament calibration
More questions on retraction. Many profiles from Prusa don't have the box checked at all, so I assume that means zero retraction. Maybe that's why my test towers didn't have any change from top to bottom, if not much is needed. I've read AI stuff that says the Nextruder doesn't need much. Other Prusa profiles seem to be around 0.8mm, if it's used at all. A lot of retraction can give rise to heat creep, and that does seem to be an issue for some people with the Core One. So, I'm thinking the number will be between zero and tiny!
There are two sets of retraction, one for the extruder and another for the filament which can override this.
Anyway, I need to redo the retraction tower. The seams should be on the inside of the towers, not in the rear. I'll fix it and create a new release. Stay tuned...
RE: PrusaSlicer 2.9.4 with built-in filament calibration
More questions on retraction. Many profiles from Prusa don't have the box checked at all, so I assume that means zero retraction. Maybe that's why my test towers didn't have any change from top to bottom, if not much is needed. I've read AI stuff that says the Nextruder doesn't need much. Other Prusa profiles seem to be around 0.8mm, if it's used at all. A lot of retraction can give rise to heat creep, and that does seem to be an issue for some people with the Core One. So, I'm thinking the number will be between zero and tiny!
PrusaSlicer Filament Edition v1.1.1 — What's New
STEP File Support
- STEP file import now enabled across all builds (macOS, Linux, Windows), matching Prusa's official release
Retraction Tower Overhaul
- Towers are now hollow (0% infill, no top layers) for clearer stringing evaluation
- Default spacing reduced to 34mm center-to-center
- Seam positioned inward so it doesn't interfere with stringing assessment
- Fixed off-by-one bug where the final retraction value was missing from the range
Calibration Menu
- Menu items can now be reordered by editing the
[calibration_menu_order]section in PrusaSlicer.ini - Default order follows the recommended calibration workflow: Temperature → Flow Rate → Pressure Advance → Retraction → Max FlowRate → Extrusion Multiplier → Fan Speed → Dimensional Accuracy
Max FlowRate
- Brim now enabled by default for better bed adhesion during the test
Bug Fixes
- Fixed crash when clicking Cancel in Preferences → Other
- Fixed OCCT compilation on CI (C++17 standard, Boost locale fix)
RE: PrusaSlicer 2.9.4 with built-in filament calibration
Hi Hyiger,
Question 1:
Just to clarify, I do understand the excellent work you've put into these two programs.
I make a change in the filament database in the “Filament DB” program, and I have to restart PrusaSlicer for the changes to take effect.
I make a change in PrusaSlicer to the filaments loaded from the Filament DB program, and it updates immediately in both the slicer and the Filament DB.
Is that correct?
Question 2:
I’d like to showcase your work on another forum. Do I have your permission to do so?
Mods for Core One: Core One HT 450 degrees, Comfortable display , Very fast print start and Reducing noises
Mods for Prusa XL: Very fast print start
RE: PrusaSlicer 2.9.4 with built-in filament calibration
Hi Hyiger,
Question 1:
Just to clarify, I do understand the excellent work you've put into these two programs.
I make a change in the filament database in the “Filament DB” program, and I have to restart PrusaSlicer for the changes to take effect.
I make a change in PrusaSlicer to the filaments loaded from the Filament DB program, and it updates immediately in both the slicer and the Filament DB.
Is that correct?
Question 2:
I’d like to showcase your work on another forum. Do I have your permission to do so?
- Correct, have to restart PrusaSlicer to pick it up. On my ToDo list is to add a Sync button to PrusaSlicer. I'm not sure it's possible to implement and autosync but can have a look. Yes, currently if you make a change in PrusaSlicer to a filament preset and save it, it immediately gets updated in the Filament DB
- Please do. It's open-source and more testers (and collaborators) are always welcome
RE: PrusaSlicer 2.9.4 with built-in filament calibration
Correct, have to restart PrusaSlicer to pick it up. On my ToDo list is to add a Sync button to PrusaSlicer. I'm not sure it's possible to implement and autosync but can have a look. Yes, currently if you make a change in PrusaSlicer to a filament preset and save it, it immediately gets updated in the Filament DB
That's exactly what I wanted to ask you—whether a button makes sense here or if I just haven't understood the feature yet.
Please do. It's open-source and more testers (and collaborators) are always welcome
Thanks 🙂
Mods for Core One: Core One HT 450 degrees, Comfortable display , Very fast print start and Reducing noises
Mods for Prusa XL: Very fast print start
RE: PrusaSlicer 2.9.4 with built-in filament calibration
I’d be amazed, and pretty disappointed if similar tests aren’t included in PS3 when it’s released.
It’s incredibly beneficial to have these tests, and almost negligent on Prusa’s part that proper filament calibration tests aren’t already part of PS.
RE:
I’d be amazed, and pretty disappointed if similar tests aren’t included in PS3 when it’s released.
It’s incredibly beneficial to have these tests, and almost negligent on Prusa’s part that proper filament calibration tests aren’t already part of PS.
I think it might have to do with Prusa's reluctance to adopt anything they didn't invent (INDX excluded). Nozzle wipers are a prime example. But yes, hopefully I expect PrusaSlicer 3.0 will nullify all my (Claude's) hard work.