Finished my first big multicolor job on the U1 and it just kept going

Mine came in about three weeks ago and I had the same surprise on waste. Did a two tone house number sign for the front porch, maybe six hours, and the purge pile was small enough I almost thought something was wrong at first. I'd come from a setup where every color swap left a blob the size of a poker chip, so I was mentally preparing for a mountain of scraps by morning. Instead I got a little cluster of tabs I tossed in the scrap bin without a second thought.

I also learned the hard way about the trim before loading. Fed in a spool of Sunlu at a slight angle because I rushed the cut and it snagged twice in the first twenty minutes. Squared the end off flush and it ran the rest of the night untouched. Now I keep a little pair of flush cutters hanging on the spool holder so I never skip that step.

One thing I'd add for your bigger print tonight is to check that the spools are winding clean before you start a long run. I had one older spool with a loop tucked under a couple wraps that would have jammed at hour three if I hadn't tugged it loose first. Cheap five second check before you go to bed.

Glad it's humming along for you, but my first week with the U1 was rougher than what's been described here. My overnight runs kept stalling out around hour three or four, and it took me a while to figure out the culprit was humidity. I keep my printer out in the garage and my older spools had been sitting in open bags for months. The PLA got brittle enugh that a strand actually snapped inside the feed path mid print, and I lost two long jobs before I connected the dots. What fixed it for me was boring housekeeping. I moved the spools I actually print with into a couple of airtight totes with desiccant packs, and I started weighing each bag against a note on the spool label so I know when one is running low. Since then the long multi color jobs have been as boring as everyone says, which is exactly what I want at 2am. The trimming tip in the original post matches my experiance too. I keep a pair of flush cutters hanging on a hook next to the spool rack now, and I cut every end at the same angle out of habit. The one time I got lazy and used kitchen scissors I paid for it with a clicky feed noise halfway through a nine hour job.

So if anyone here is planning thier first big overnight print, sort your filament storage first. It made the difference between babysitting and sleeping for me.

Put a cheap wifi camera pointed at the print bed after my first overnight run. Used to walk downstairs two or three times a night for nothing, now I just glance at my phone and roll over. Only time I got up was when the camera caught a corner of the print lifting a little, and a brim fixed that on the next try. One thing I do differently now is load the color I'll use the least in the slot farthest from the door. Sounds backwards but the ones near the opening are easier to reach when I do have to mess with somthing mid run.