The definitive “AMS-compatible support material for PETG” thread

Bambu Lab X1 Series Troubleshooting
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PolySupport is supposed to work with PLA and PETG. I think I read that in info sheet of Poly PETG that it PolySupport S1 can be used as support.

Btw, I don’t understand well this temp fiasco. Can’t hotend adjust temp to lower/higher when filament is changed? Isn’t that the whole point of filament profiles, so that the temp is adjusted according to the filament being used. Or it doesn’t work that way? And if it doesn’t, then that can be an easy fix for any slicer. And even now, if it isn’t supported yet, you could probably achieve that by modifying filament start/end G code or in printer’s filament change G code section.

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Just to make sure and not confuse anybody:

  • PolySupport is break-away support material (HIPS blend) officially for PLA only
  • PolyDissolve S1/S2 are water-soluble support materials (PVA blends) officially for various materials
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Here is some demonstration for PolySupport…

Support-Test file (Printables)

20230515_234114
20230515_2341141920×1440 232 KB

Upper support base layer bonds on interface layer

20230515_234241
20230515_2342411920×2560 357 KB

After removal of upper base layer (can be done by hand)

20230515_234433
20230515_2344331920×2560 365 KB

After removal of interface layer (thin tool like cutter required to separate)

20230515_235357
20230515_2353571920×1440 235 KB

In this example I choose snug support so the outer lines are not supported well.

The support holds very strongly onto the PETG witch helps in avoiding warping above the support area.

You have to spend some time to remove the support but it never bonds completely with the PETG → No scars.

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I wonder why nobody mentions Xioneer (https://www.xioneer.com/support-materials/) support materials on this thread yet.
would be very curious about experiences.
For me it is by far the most versatile support filament - this company produces only support-filaments, nothing else.

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Would love to hear if this XYPolyer Breakaway-80 works for you for PETG support interface? I just ordered a roll so I’ll report back too.

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Hey azCubs76,

Ya it has been working great with petg and using 3 interface layers and in the AMS I did have to add.
Bambu Labs AMS lid spacer so the lid will not hit the spool.

I have not had time to do the hydra mod yet so the spacer kit is working great for now :slight_smile:

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3DTech,

Awesome, thanks for the feedback. I just ordered a roll from Amazon. $45/kg seems pretty reasonable compared to other options. I’m haven’t done the Hydra mod yet either so good to know about the spool but that’s a bummer.

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Lately I’m seeing the two side of this discussion. With perfectly defined layers, PETG and PLA work wonderfully for each other, but when the layers intermingle, issues definitely arise.

These types of prints work beautifully,

Defined Flat Break
Defined Flat Break662×711 114 KB

These… not so much.

Layered
Layered733×801 109 KB

I haven’t found anything that helps, but the filaments being incompatible with each other is definitely causing issue when the interface layer spans a number of layers.

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So cloning the PETG profile for PLA like you described has worked surprisingly well for me, thanks. Also installed a 0.6 nozzle to minimize clogs further.
HIPS testing: HIPS bonds nicely with PETG, support interface prints just as good as Support W on PLA. Bonding a little too strong but with some persistency you can cleanly remove the supports and end up with a clean surface.

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Temp changes is the main reason that causes clogs all the time. Filaments with different properties like glass transition temperature are even refused to print together by default in Bambu Slicer for this reason.

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Looks very similar to my HIPS results. HIPS may be the better option here as it prints at 260 °C no problem and costs only 20 $/kg. For clarification, I used HIPS as breakaway support, no dissolving needed.
@martin.m I’m tempted to try but it’s over 200 € per kg + VAT :confused: which is literally 10x the PETG price.

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I can verify the spool the Breakaway-80 ships on is too big for the AMS. I will have to build a respooling jig and respool it.

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Yep it hits the lid :cry:

But you have solutions to get around it respool or add the AMS lid spacer

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I didn’t see it mentioned anywhere in here and thought it was SUPER important to make note of, considering how many people are using PVA. I don’t know how prevalent it is across different brands of PVA, some PVA makers give a strong warning about printing temps. If you print them too hot, they will effectively seize up the nozzle to the point they can’t be unclogged. So just a PSA.

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I’m sorry I didn’t take any pictures but the XYPolyer Breakaway-80 worked really well for me as an interface layer for Overture PETG. As just4memike noted, if ANY of the breakaway material mixed with the PETG then the layer adhesion went to sh!t. I had to jack up the flushing volume on the Breakaway->PETG to 450mm^3 to ensure good layer bonding. This wastes way too much filament for varied use but as an interface layer for flat horizontal spots with a single filament swap it is very acceptable.

I printed 7 smallish test prints and the AMS handled everything fine with no jams. I did have to prop the lid up on the tabs though as the spool is just barely too big.

PLA may work just as well for this purpose but I don’t like the extreme temperature differences.

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Same experience here – the Breakaway-80 never purges enough and the entire layer is ruined by super low adhesion. The filament is also very soft and breaks too easily to be reliable in the AMS. I gave up and threw it away.

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Thanks for info, ordered some.

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well indeed, but since I only use it for the interface layers, the consumption is minimal…
however for serious printing quantities it is an issue for sure.
FYI - I still did not try it yet…but will definetly and report back. Giving HIPS a chance as well…

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Just a hint on cardboard spools with AMS.
There is an adapter from polymaker for free download at cults3d #85382950 which can make most cardboard spools AMS compatible.

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There is also a youtube video v=BDkvPs2GhyM which says that xioneer VXL90 works on the AMS.