Are there any recommended settings to improve the feature definition on downward facing sections of a model that need supports to be printed. I am using Bambu PLA basic and Bambu PVA for the support interfaces. Attached are photos of the top side of the feature and the bottom side that was supported. I use the tree(auto) for generating the supports. The side of the model with the holes is facing down on the plate with the other side facing up.
Any suggestions for support settings to improve the quality are welcome.
I think the best advice I’ve seen here is to use mismatched filament for the support interface layers.
In your case use PETG as the interface to that PLA and it will not stick, so that way you can optimize the Z distance for the interface and get clean removal and overhangs.
Shop Support at Bambu Lab UK | Bambu Lab UK
Support PLA/PETG is specially formulated to minimize fusion with PLA and PETG, thanks to differences in polarity. This unique characteristic ensures hassle-free removal of the support interface, reducing the risk of damage to your printed object.
Recommended for use with PLA or PETG filament only. Select “Support for PLA/PETG” in the “Support/Raft Interface” settings in your slicer.
• When using tree supports, please avoid using support filament for the “Support/raft base”.
• Store the filament in a dry location, and dry at 75°C for 8 hours if brittle or exposed to moisture (see WIKI’s Filament drying guide: Filament drying instructions).
• For more support-related settings, please refer to: Support on WIKI.
Nowadays, I always use a 2 layer standard PETG interface for PLA and vice versa. 0mm z- and interface distance, usually concentric interface. Nothing fancy needed.
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Does an ams load petg and pla for the same print ? or do you have to use a pause option for the support interface
With an AMS you can use PETG as an interface only filament for PLA. Just gotta be careful to double check the max temp for both filaments is set for a temp at which both filaments are within their range. Otherwise it gives a nozzle clog during the swap.
Depending on the print, it can also be beneficial to denote the interface material as a support material in the filament settings to maintain bed temp. Has not been an issue for me to date though.
Sorry for the mistake in my posting I am using Bambu PVA for the support interface.
Sorry for the mistype in my posting. I am using Babmu PVA as the support material interface.
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Sorry for the mistype in my posting. I am using Babmu PVA as the support interface material.
Even easier:
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This is the answer. Using PVA, PETG/PLA, or any of the other dissolvable or breakaway support products. Set zero Z spacing. You can also make the support interface pattern very dense. You will get near-perfect undersides (you may still see the lines of filament more clearly than you would ideally want, but they won’t protrude/hang down like they will always do with a Z space).
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Iget the impression that we will agree to disagree when i say its more about luck than it is by design ,
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as quoted from the initial reply, anyway i can see the post has moved on so i will leave it at that
Well, I tried the original break away support back in 2023. It really did not meet the standards I expect. Since then however, it has been replaced by the current PLA/PETG support.
Being sold at 72 €/kg atm in the Bambu Shop, it would really need to offer a humungous improvement over basic dissimilar material printing (which is about material compatibility, not luck).
Since I get perfect surfaces with my (current) prints with the 23 €/kg PETG rolls (actually 17 €/kg if buying more rolls at once) and also still have a bit of Fiberlogy BVOH left (86 €/kg), it does not look like it’ll have a chance to show its worth to me anytime soon. But never say never… There may still be a use case for me lurking in the future.