Hi I just tried to print TPU with the Snapmaker 2.0 A250. Sadly after about 10 minutes it seems that the nozzle gets clogged and it the filament gets stick inside the head. Are there any suggestions how it could get better? I have set the settings for the print same as for PLA with high quality, b…

Thanks for the tips. I will try a looser calibration. One comment though about the slippage: I don’t think my problem is the TPU slipping. When I open the filament hatch, I can see the filament is buckled between the gear and the hole entering the hot end. This implies to me that it didn’t slip,…

TPU is always going to be problematic with the current feed path design. Its the first thing i looked at when I opened the 3D printer head flap. The filament path is not constrained enough for flex filaments and combined with a flat tooth gear rather than a hobbed extruded gear its always gonna h…

[BMG_extruder_2] [BMG_extruder_1] [snapmaker_extruder2] [snapmaker_extruder1] First 2 pics are a dual drive gear BMG clone. 2nd pics are the snapmaker extruder gear. See the difference. Unfortunatle snapmaker uses a proprietary very slim drive gear… so not an easy swap

Might be able to 3d print a small plastic piece that could be glued to the filament guide to close the gap and stop filament wandering… This might do it [107667961_291832031941666_879868835512001006_n (1)]

So yup after putting is an optimised insert into the print head to constrain wandering flex filament + a slightly stronger spring. happily printitng TPU at 40mm/sec with retraction. TPU is bioflex which is 27Shore D hardness or around 75A as most other filaments are measured in. [shore_scale] T…

@stevilg sure no probs… here it is… as one solid piece… and in two halves for easier printing snapmaker_flex_feed_adapter_2_halves.STL (40.5 KB) snapmaker_flex_feed_adapter_one_piece.STL (38.4 KB)

Nicely done! I had some ninjaflex that failed to print previously that I will try again once I have this part inserted. Did you glue this in place or just let the door hold it in place?

I didnt glue it just let it be held in place by the door. I guess you could glue in place with a bit of cyanoacrylate (super glue). If the print doesnt come out clean then you may need to gently file or dremmel the part

It seems like one of the problems is that when you load it loads too quickly. It ends up jamming and looping up inside the housing before I can even try to print. Is there a way to slow down or control loading through command prompts in Luban? I tried printing the adapters in pla and petg but didn…

Printing TPU with A250 (or any SM 2.0)

Snapmaker 2.0 (3-in-1)

stevilg July 6, 2020, 4:23pm 37

@chazr33gtr, any chance you want to share that stl?

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Printing TPU with A250 (or any SM 2.0)

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