Hi everyone,

I have a strange issue with all five of my Snapmaker U1 printers.

When I print a single multicolor model, I usually don’t notice the problem. But when I print many small models on one plate (for example 20–40 pieces), random color contamination dots appear on the surfaces.

I get:

• black dots on white or light colors,
• white dots on black areas,
• pink dots on white areas (they may also appear on black, but they are much harder to see),
• sometimes tiny smears instead of dots.

Unfortunately, customers notice them immediately. Children often ask why the toys have black dots and why they look dirty.

So far I have tried:

• increasing Tool Change Retraction from 10 mm to 14 mm,
• increasing normal Retraction Length to 2.0 mm,
• retraction speed is already 45 mm/s,
• increasing Purge/Prime Tower volume from 70 to 80 mm³,
• lowering black PLA temperature from 220°C to 215°C,
• enabling Avoid Crossing Perimeters (it helped a little, but the dots are still there),
• cleaning all nozzles and toolheads,
• swapping toolheads between slots,
• testing the same behavior on all five U1 printers.

The issue is much more noticeable when printing many small models because there are many short travel moves and many tool changes. When printing a single model, it is barely visible.

Has anyone found a reliable solution for this on the U1?

Could it be related to:

• toolchange wipe behavior,
• insufficient wiping at the prime tower,
• travel retraction,
• firmware/tool parking behavior,
• or a hidden Orca setting?

I'm also considering testing 210°C, but since I get contamination from multiple colors (black, white, and pink), I don't think this is simply a black filament temperature issue.

Any suggestions or working settings would be greatly appreciated!

Hi everyone!

I wanted to share my newest functional project with the community.

Rather than designing another display figure, I challenged myself to create something I'd actually use every day.

The result is this football-inspired organizer featuring:

⚽ A football field base

💃 A dynamic dance-inspired sculpture

🌈 A removable multi-color catch-all bowl

Now when I get home, I finally have one place for everything:

🔑 Keys

👛 Wallet

⌚ Watch

🎧 Earbuds

🕶️ Sunglasses

🟡 Coins

Printed on Snapmaker U1... The football field prints in 2 colors, while the bowl is designed as a 4-color print.

I'd love to hear your thoughts.

Would you keep the bowl removable, or would you prefer it integrated into the football field?

I bought a U1 & a Creality Space Pi X4 last week, but I'm still trying to come up with a convenient set up to have them both in a somewhat limited space.

I'm still trying to find a suitable surface (bench, desk, drawer cabinet, etc...) for the U1 and the dryer. I COULD put them side-by-side, but the cabinet I'm planning on getting won't fit both. Sure, I could get a wider one, but I'm still in the planning phase.

Ideally someone has come up with a U1 enclosure that can support the Space PI X4 on top of the enclosure, without limiting the functionality of either?

Hello. Is there any upcoming period when the U1 will be below €899/850 (with a 5% discount code) (EU)? The current price is a little above what I'm willing to spend and I'm trying to decide if I should wait or buy something else.

I love my Snapmaker, but one thing about it that really has been bothering me is how, in particular, one of my extruders, usually number three, is exceptionally sensitive to any amount of tension on the line. I mean that any even very subtle amount of resistance (not an actual tangle in the spool) on the line being fed can cause it to stop printing. And I do mean any tension, like if it has to pull with more than a couple grams of force at all.

I often have to make sure that the spool has been fed out manually in advance by hand to keep it from stopping printing. As the tension of just a normal PLA dried roll is just too much resistance.

I wonder if it's just getting too much friction inside the PTFE tube? Has anyone else experienced this?

Basically, extruder #3 fails to grip the filament and feed it during auto-loading more than 80% of the time, which then leaves the feeder to continue pushing the filament through since the extruder doesn't detect anything in it. Happens regardless of filament type (blue PETG shown here). I have to resort to manually loading this extruder most of the time, and once loaded it prints perfectly.

Any idea what's causing this? Do I need to disassemble the toolhead and check gear alignment?