In the past, printing TPU has always been a hassle. It was very difficult to get it through my reverse bowden setup, and especially the Fiberlogy 30D TPU’s which are quite rubbery and very “sticky”.
Even just 20cm’s of PTFE tube is impossible for the TPU to pass through because it sticks just too much to the sidewalls of the tube. Tried a branded Capricorn one, but this offered no solution.
The only way I could get the Fiberlogy 30D TPU to print, was to suspend the filament above the printer, and feed it directly in the direct extruder. This sadly makes me unable to print from my drybox (which is reverse bowden connected to the extruder)
Now I’m wondering, can I do this with the X1C?
Is the top glass cover made to be removed regularly? Because I switch a lot between TPU and other filaments.
These are but a few of all of the questions that I have before my X1C arrived (should be Wednesday or Thursday now)
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You could do this. The glass top just lifts off. There’s a push collet to release the PTFE tube. But I’d worry that the movements of the printhead would pose a problem for you. Note that the tube used is not 1.75mm ID like Capricorn.
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Well they (the movements) don’t pose a problem now and I’ve got a gantry system, which makes the same XY movements (albeit differently driven) than the core XY system of the Bambu.
Speed I see why that could be a problem, but this TPU prints at about 15m/s so I’m not really worried about that.
So as far as I can tell, and given that the top just lifts of, I could use the same workflow as I do now
- Unload the filament
- remove ptfe tube and fix to bracket (to be designed
) on the printhead.
- insert TPU from top and go… (?)
am I right?
I don’t think many have really tried it. If your filament is directly above your printer, I dont see too much of a problem. After all the movements wont be that fast as you are printing TPU. I haven’t got mine printing tpu any fast than my other printers really. I think it will work but you can try it and let us know.
I most definitely will !
thanks for the fast replies
I got nothing to add to the already great solutions provided. Just wanted to say you’ve got an interesting build. Completely own design or based of something open-source? What kind of chamber temps are you reaching in a volume this big?
haha yes that’s the right word; interesting 
Well it all started with an ender 5 and not much is left of it as you can see.
I’ll reach a max of 40°C because from that temperature, my motors are getting too toasty (and lowering amps makes them skip) It is actively heated though with an electrical cabinet heater and thermostat
Posting here, since I can’t seem to create a new thread.
New P1S owner here, not new to 3d printing.
I have a nice Ikea bror Rack with a rubber pad and a concrete slab on it.
Above there are Ikea 365+ dryboxes for filament with ptfe tubes.
Now I’m thinking about how to integrate my P1S.
My plan is to completely remove ptfe tube of the P1S and use the one directly from my drybox coming down into the back port with the rubber grommet along right to the extruder.
Any bad experiences with such a setup?
