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SoftFever / OrcaSlicer

G-code generator for 3D printers (Bambu, Prusa, Voron, VzBot, RatRig, Creality, etc.)
https://discord.gg/P4VE9UY9gJ
GNU Affero General Public License v3.0
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Increase solid infill area to next sparse infill line. AKA: Extend sparse infill #1165

Open jeremytodd1 opened 1 year ago

jeremytodd1 commented 1 year ago

PrusaSlicer 2.6 Alpha 5 introduced a great new feature: Extend sparse infill. Release notes for reference, scroll down to "Extend spare infill" section

Here is an image that nicely sums it up as well: https://user-images.githubusercontent.com/10776877/32404178-27b5ffa0-c14b-11e7-98a9-3be600881306.jpg

Having this feature has honestly been a game changer for me recently, as you can now have much less infill but still have the internal solid bridging always connect to the infill.

It's the main thing preventing me from switching to OrcaSlicer. It'd be great to have this added.

SoftFever commented 1 year ago

@jeremytodd1 Thanks, this is good feature. Any change you have model that can demonstrate this situation for me to test?

jeremytodd1 commented 1 year ago

@SoftFever

Honestly, this ends up applying to the vast majority of objects.

As a quick example, I made a very small and simple test model: https://i.imgur.com/0wwFt9P.png

Here is how OrcaSlicer handles the bridging infill for that upper part of the model: https://i.imgur.com/JOdu1dV.png

You can see how a lot of the bridges aren't actually connected to anything so they will not print nicely at all.

Compare that to how this feature in PrusaSlicer will handle the same bridging infill: https://i.imgur.com/lwFUXln.png

All of the ends of the bridges connect to the infill.

This is why I classify this feature as a gamechanger. It factors into practically any print job as it helps ensure the bridging infill prints as well as it can.

You can also have insanely low infill percentage but still not need to worry about the internal bridging layers failing. Here is an extreme example of that same object but with very low infill: OrcaSlicer: https://i.imgur.com/fGlkgQD.png PrusaSlicer: https://i.imgur.com/1jlQ3J8.png

One of those objects will print without issue. The other object will have issues printing. Thats what this feature does.

rfnovo commented 1 year ago

@SoftFever there is an option in SuperSlicer called "Supporting Dense Layer" that solves this problem and on top of that still provides better top layer quality: image image

It adds this sparse internal bridge before the actual internal bridge. It is quick to print and provide a good support for the internal bridge. Take a look here, were we had some discussion on that and I posted some pics of the difference in final print quality: https://github.com/SoftFever/OrcaSlicer/issues/1026

jeremytodd1 commented 1 year ago

@rfnovo @SoftFever

Ah, thank you pointing that SuperSlicer feature out. It looks like it's a suitable solution. I haven't tried actually printing with it yet personally, but it looks like it will do essentially the same thing.

In my slicing testing for "Supporting dense layer", once thing I do want to point out is that I'm only having consistent reliable looking results with the "Automatic" algorithm option. The "Automatic, only for small areas", "Automatic, or anchored if too big", and "Anchored" options all give me unfavorable results at lower infills.

The "Automatic" option is the only one that has been reliable no matter what the infill percentage is.

SoftFever commented 1 year ago

Thank you, everyone! The discussions have been very informative. In my opinion, both PrusaSlicer and SuperSlicer's approaches are effective. However, based on what I've seen, PrusaSlicer's "Extend sparse infill" feature is better suited for this use case. I will work on porting it to Orca Slicer.

mlewis-everley commented 1 year ago

@jeremytodd1 One item to note about "dense infill layer" from SuperSlicer is that it can (in many instances) be used with 0% infill. Essentially making it a quicker (and less consuming of filament) alternative to lightning infill.

Many features can be supported with just dense infill and nothing else, as an example I have attached something I print regularly:

ss-dense-infill-1

SS-Dense-Infill-2

SS-Dense-Infill-3

You have to tune your bridging infill settings a bit, but once you have it is a great filament (and time) saver.

Noisyfox commented 1 year ago

Orca (in fact, BBS) came with a settings called "Internal bridge support thickness" which does the similar job. Just set the value to your layer height or so (or leave it to 0.8mm as the default) and you will get extra supports under the bridges.

rfnovo commented 1 year ago

I've it enabled and it does help indeed but not quite the same thing. Dense infill layer from SuperSlicer still more efficient IMO

Noisyfox commented 1 year ago

image b4d97afea0ea727980031b1e5ce6077d

Anyway I've done it. A PR will be ready soon.

blownupp commented 1 year ago

@Noisyfox Excellent - looking forward to it! I just realized this feature was missing and came looking for any signs it existed/was in the works.

sb53systems commented 1 year ago

Hello every one, (sory about my english) I have a problem to control internal bridges thickness in orca slicer v 1.7.0, this parameter dont make any changes ! image

I hope some one can help me

Noisyfox commented 1 year ago

Hello every one, (sory about my english) I have a problem to control internal bridges thickness in orca slicer v 1.7.0, this parameter dont make any changes ! image

I hope some one can help me

You cannot change the thickness of ANY bridges because they are extruded over the air and will ALWAYS be the same size as your nozzle size. The option in your screenshot doesn't change the thickness of the bridge, but change the thickness of EXTRA layers added below your bridge.

sb53systems commented 1 year ago

Hello every one, (sory about my english) I have a problem to control internal bridges thickness in orca slicer v 1.7.0, this parameter dont make any changes ! image I hope some one can help me

You cannot change the thickness of ANY bridges because they are extruded over the air and will ALWAYS be the same size as your nozzle size. The option in your screenshot doesn't change the thickness of the bridge, but change the thickness of EXTRA layers added below your bridge.

Thankyou @Noisyfox for your quick answer, in my case this makes the briding speed very slow and have a bad internal bridging, it's a limitation in this slicer ! i think that value must be the same as external bridges thikness to ensure a good bridging. and i hope this future wil be integrated in orcaslicer. I would like to use orcaslicer but i'll stay using superslicer how gives me more control and beter prints.

Noisyfox commented 1 year ago

Hello every one, (sory about my english) I have a problem to control internal bridges thickness in orca slicer v 1.7.0, this parameter dont make any changes ! image I hope some one can help me

You cannot change the thickness of ANY bridges because they are extruded over the air and will ALWAYS be the same size as your nozzle size. The option in your screenshot doesn't change the thickness of the bridge, but change the thickness of EXTRA layers added below your bridge.

Thankyou @Noisyfox for your quick answer, in my case this makes the briding speed very slow and have a bad internal bridging, it's a limitation in this slicer ! i think that value must be the same as external bridges thikness to ensure a good bridging. and i hope this future wil be integrated in orcaslicer. I would like to use orcaslicer but i'll stay using superslicer how gives me more control and beter prints.

Internal bridging will have a huge improvement in the next release.

mlewis-everley commented 10 months ago

Anyway I've done it. A PR will be ready soon.

@Noisyfox so I am just trying this out (I have updated to 1.0b2), but I cannot find the settings you mentioned. My settings panel attached:

orca-infill-settings

Noisyfox commented 10 months ago

Anyway I've done it. A PR will be ready soon.

@Noisyfox so I am just trying this out (I have updated to 1.0b2), but I cannot find the settings you mentioned. My settings panel attached:

orca-infill-settings

It doesn't have an option.

mlewis-everley commented 10 months ago

It doesn't have an option.

@Noisyfox So I have been testing this a bit and the dense infill appears to be being added under items that are printed in thin air, but there are no settings to control it. Is it just automatic in 1.8?

Noisyfox commented 10 months ago

It doesn't have an option.

@Noisyfox So I have been testing this a bit and the dense infill appears to be being added under items that are printed in thin air, but there are no settings to control it. Is it just automatic in 1.8?

Yes it's automatically added when needed.

mlewis-everley commented 10 months ago

It doesn't have an option.

@Noisyfox So I have been testing this a bit and the dense infill appears to be being added under items that are printed in thin air, but there are no settings to control it. Is it just automatic in 1.8?

Yes it's automatically added when needed.

@Noisyfox That's cool! Thanks for the assistance.

igiannakas commented 9 months ago

@SoftFever this can be marked as complete in the backlog, right?

tokamac commented 4 days ago

It doesn't have an option.

@Noisyfox So I have been testing this a bit and the dense infill appears to be being added under items that are printed in thin air, but there are no settings to control it. Is it just automatic in 1.8?

Yes it's automatically added when needed.

This is TERRIBLE for me. @SoftFever: Enable it by default if you want, but please consider adding an advanced setting to disable "Extend sparse infill".

See https://github.com/bambulab/BambuStudio/issues/4904 The issue is similar in OrcaSlicer. Not exactly the same. For whatever reason the same 3MF will generate two unnecessary isolated breakable bridges and only one in OrcaSlicer. The issue remains though.