u/gasman16

/rant

I genuinely regret buying the Snapmaker U1.

The reason is simple: poor reliability.

I do not consider myself a complete beginner. I have been 3D printing for about 1.5 years now, starting with an Ender 3 V3 SE. That machine may be based on an older design, but it has been extremely reliable. If a print failed, 99% of the time the fault was mine.

I know my way around a 3D printer. I have taken apart my Ender 3 more times than I care to admit, and I have almost finished building my first Voron. I understand the basic parts of a printer, what they do, and how they work. In fact, those are the parts of 3D printing that fascinate me the most. I am not afraid of opening up a printer and getting my hands inside it.

And yet, the Snapmaker U1 has tested my patience like no other machine.

From the very beginning, it has been one problem after another. Toolhead swapping anomalies. Filament getting stuck inside the toolhead. MCU communication errors. Every time I solve one issue, the printer seems to grow a new one.

The auto filament feeder is maddeningly unreliable. It might load filament. It might not. It might unload filament. It might not. There is absolutely no confidence that this machine will simply do what it is supposed to do.

And toolhead clogging is an entirely different nightmare.

To start almost every other print, I either have to unclog the toolhead or take it apart to remove some badly mangled piece of stuck filament. That would still be somewhat bearable if toolhead disassembly was quick and sensible. But no. Getting to the extruder gears takes a ridiculous amount of time.

Honestly, I feel like the engineer who decided this toolhead needed ten different types and sizes of screws in random places has never taken apart anything in his life, let alone a 3D printer.

The bundled slicer is slow. Firmware updates can completely screw things up. Every day, there is some new problem waiting.

Yes, Snapmaker customer support has been good. They respond quickly, they are polite, and they genuinely seem to try to help. But I did not buy a printer so that I could keep emailing customer support every time a new issue appears. I have better things to do.

I wish I could return this printer and buy something else, but unfortunately that is not feasible for me now.

In my honest opinion, the Snapmaker U1 is not a beginner-friendly 3D printer. It is also not reliable enough for production runs, at least not in its current state.

I regret buying this machine.

/endrant

I apologise for the wall of text. Its midnight where I am and I spent the last 2 hours wrestling this machine to start an important print. I finally got it going but I was angry and frustrated by then and this post is the result.

Greetings!!

I need to print multiple work-related models using TPU 90A, and I am also considering using soluble support materials like PVA.

I live in a very high-humidity area, so printing directly from a filament dryer is basically essential for consistent print quality, especially with TPU and PVA.

I currently own:

- Sovol SH02 filament dryer

- Sunlu FilaDryer S4

The issue is space. The only realistic place I can fit a dryer is directly behind the U1, on the same table.

I am trying to figure out the best filament feeding setup from a dryer to the printer.

My questions are:

1. Is the filament path from the Sunlu FilaDryer S4 to the S1 viable?

   Has anyone successfully used this setup, especially with flexible filament?

2. Would it be better to buy another Sovol SH02 and pair it with the one I already have?

   This might give me a more compact and direct feed path.

3. Should I consider getting a Sovol SH03 instead?

   Has anyone used the SH03 with the Snapmaker U1 or a similar printer setup?

My main concerns are smooth filament feeding, avoiding drag or sharp bends, and maintaining good drying during long TPU/PVA prints.

Any advice or photos of similar setups would be greatly appreciated. Thanks.

My family and I live in a small apartment in Kochi — my wife, two kids, and my in-laws. As you can imagine, space is already quite limited, and lately it feels like we barely have room to move around at home.

One major issue is that my in-laws, and to some extent my wife, don’t like throwing things away. Old clothes, toys, books, cardboard boxes, plastic covers, tricycles, bicycles, kickscooters, cradles, skateboards — basically anything that might be useful “someday” gets saved.

I do understand where this comes from, especially for an older generation that grew up when things were not as easily available. But the lack of space is becoming a real problem.

I was thinking of renting a small storage space somewhere in Kochi where we could keep these items. That way, they don’t feel like things are being thrown away, and we get some breathing space at home.

Does anyone here have experience with monthly rental storage spaces in Kochi? Any recommendations, approximate costs, or things to watch out for?

Greetings!

My Voron 2.4r2 350 mm kit came with a set of three 5V Disco-on-a-Stick addressable LED strips. I understand how to daisy-chain them together, but I am not completely sure about the best way to power and control them.

I have a BTT Octopus Pro H723 v1.1and a Raspberry Pi powered from a separate 5V PSU.

My current understanding is:

Powering the LEDs from the same 5V PSU as the Raspberry Pi may risk voltage sag or instability if the LED draw is significant.

The current draw is likely too high for a 5V fan/header output on the Octopus.

I am not clear on the correct method for controlling the LEDs from the Octopus/Klipper.

So my questions are:

Is a separate 5V PSU for the LEDs the recommended solution? (I really don't have space in the elecronics bay for this) or is it okay to power the LEDs from the same PSU as the Pi?

If I use a separate 5V PSU, do I simply common the grounds between the LED PSU, Octopus, and Pi?

Which Octopus Pro pin/header is usually used for the LED data/control line

Thank you!

That’s it guys… I’m officially depressed.

I had posted earlier about a toolhead swapping anomaly on my Snapmaker U1.

First failure: 22 hours into a 26-hour print

Second failure: 8 hours into an 18-hour print

After the first incident, I:

Cleaned all toolheads

Wiped down the POGO pins

Ran full maintenance

Recalibrated homing + toolhead alignment

Everything looked perfectly aligned (at least to the human eye).

Then the second failure happened — and this time it was worse.

The toolhead actually fell off the dock onto the build plate. By the time I remounted it and resumed the print, there was a layer shift, and the print was basically ruined.

Attempt #3 (last night):

Material: PLA Matte (Snapmaker)

Support interface: PETG (Creality)

Good news: toolhead swapping behaved.

Bad news:

At 86% completion, the purge tower collapsed.

Reason seems obvious in hindsight — PETG doesn’t stick well to PLA in the tower. The whole thing turned into a stringy spaghetti mess.

Tried salvaging it… no chance. Cancelled.

Questions:

1. Is there a proper guide/workflow for using PETG as support for PLA on the U1?

2. Do I have to use a purge tower, or can I just purge everything as “poop”?

3. Any tips to prevent purge tower failure in mixed-material prints?

One more thing (this is bugging me):

My bed mesh range is around 0.46 mm (!!)

That feels very high.

For comparison, I don’t accept anything above 0.2 mm on my Creality Ender 3 V3 SE.

That said - the first layer actually looks fine.

At this point I’m just burning time and filament.

Would really appreciate any guidance before I lose my sanity.

Note: Formatted using AI for better flow, grammar and punctuation. 😅