u/Amwo

Hi! Been 3D printing for some time now with a somewhat modded K1C and I am starting to see some limitations that I would like to overcome with my next printer.

I mostly print with engineering filaments (ASA, ASA-CF, PA6CF, PC and TPU - I really want to print TPU reliably). Ideally I would like a 3 or 4 printhead tool changer:

• Head 1 and 2: main printing heads with hardened nozzles, fancy hotends and whatnot for dual color printing of CF infused filaments (think black ASA-CF print with white ASA-CF lettering)
• Head 3: support material only: PLA and PVA
• Head 4: TPU specific head? (more on this later).

Based on my experience with K1C, I think I would like to be able to print from dryers mounted on top of the enclosure, preferably with front or rear filament exits to keep the PTFE tubes as short as possible. Are there even any dryers like this? Most I have seen have a top exit.

Would it be better to just make the enclosure tall enough to fit all the spools inside above the printheads? Can I even do that with tool changers or will it tangle? I definitely want a fully enclosed printer for moisture, heat, noise and air quality management.

Does it make any sense at all to have a different toolheads for support material and for TPU?

I was thinking that PLA doesn't need a hardened nozzle or a hotend that reaches 300C so I could save some money.

For TPU my reasoning is similar, plus the tension on the extruder could be set specifically for TPU. I would also probably not run any (or minimal length of) PTFE tube for this one.

Did anyone built something similar?

1987 8V

I have replaced the AOS seals since it looked like the lid seal failed (it definitely did, so at least it wasn't a total waste of time). I replaced the vacuum lines under the intake manifold. The bigger hoses connecting brake booster, j-boot and intake manifold looked fine.

I smoke tested it afterwards to verify repair and saw smoke coming out from what looked like the same area as before. I touched the cap on the rear of upper balance shaft and saw the cap is spinning freely and has some axial play. No oil leaking, surprisingly, but I think this is where the smoke is coming from.

Has anyone encounter this?

Having some issues with Bazzite (HTPC), and Cachy (desktop + steam big picture). I am going to try Nobara next. Any others I am missing? Using AMD GPU and a ugreen displayport to HDMI adapter.