I just got one of these for Christmas. It's quite awesome. I just joined two Red PLA spools together with ease.

Newish P1S owner here who has also been struggling with the belts riding too high or low on these pulleys. 7 months later and this is still the *best* explanation and demonstration for correctly adjusting them that I've found. Thank you, Ken!

Do i need to remove the back plate for this to work? I cant seem to move the pully block up or down. It only moves in unison back and forth. Thanks

Like MikeC4 posted, I too have owned a P1S for over a year and had no idea as to how those belt tensioners actually worked mechanically. Your video came on a random KZbin visit but I'm very glad I found and watched it. Thanks for sharing that. 👍

Thanks for doing what creality is too shitty of a company to do themselves.

How does this hold in time? Intuitively I can only see it coming to the edge again after a while…

I had to do this mid print

This was the first video that showed the correct way to fix the squeaking problem. No lubing, blowing pressured air, recalibrating; a simple adjustment is all it took.

This video is exactly what I needed. It was straight to the point and helped me clear my clog!

Just got my early Christmas present (x1 carbon) and this screeching/scratching noise is happening. This is probably the fix, thanks!

Hi! I am currently encountering this issue on my Bambu Lab P1S.. after around 5 months of owning it. Just a quick one - the original belt tension procedure from Bambu themselves reference untightening the screws, moving toolhead back and forth before tightening again. However, many people have complained of a ringing effect on their prints now due to doing this procedure. I am wondering, is there a chance of this happening during your procedure? If you can elaborate that would be great. Thank you!!

wauv. Thanks. This worked great on my brand new P1P

This vid helped fixed the dreaded "The 1st order mechanical resonance mode of X axis is low." error on my brand new P1S! Error code: HMS_0300-1000-0002-0001 Thanks!

There's 4 and 6 minute videos explaining the process with click-baity thumbnails, while your 1 minute video was the one I clicked on. Thank you for making it straight to the point!

The silly thing is, Bambu Labs recommends greasing the edges of the belt to reduce friction/noise when they run up against the flanges. To be fair, they stress using only a faint film of grease. Bambu knows about the alignment issue and tells us to use a 'band-aid'.

I have an X1 Carbon that makes a slight buzzing/grinding sound when it goes diagonal to the left. (when facing printer) Could this be the belt not being fully aligned? (the printer is brand new)

After owning a P1S for almost a year, I can't believe I only came across this video now. Life saver, just subscribed. Thanks for the video

Word of caution, this is meant for strands no longer than 4 inches because JESUS CHRIST is it hard to keep the fucking filament straight when you take it out. This is absolutely trash for getting the last couple of spools winds worth of filament onto the next full spool. -10/10 product.

Useful, thanks.

Very helpful. Thanks.

What screws drivers

Yeah man,....awesome video,..it really helps 👌

Hello how did you remove the rear panel? 🥲

Nope lol. Remove those three screws. Carefully lower down the hotend black block being mindful of the wires attached to the bottom. You’ll see 4 black tiny screws on the black pads back. THOSE are what you tighten.

Grazie! Ho risolto!!!!❤❤❤❤❤❤

So helpful.

They should have used set screws to make fine adjustments and use those screws you are using to lock it in place. Poor design imho.

seems like you are going to cook your motherboard by sliding that all around that fast

Hi, I have question not related about this video but about your A1 printer and it's LED light setup on sides could you make video or simply write your answer how you set it and where did you get it all from?

Hands are in the way when removing the screws so can not see where you are removing them

Much appreciation explaining the spring tensioners!

Great explanation and video, many thanks!

with what settings do you print PLA-CF

Like dan subscribe

Do they have ball bearings in them, cause i just got them and idk if i need to biy some bbs for the linesr besrings or just place it in without any?

I spent quite a bit of time carefully following the video, and although it didn’t turn out perfectly, it still solved my problem. Thanks for the video.

The yellow gear on mine will not come off. Pretty sure I'm gonna break the whole thing if I try harder. Also, the plastic tube is stuck as well. Any thoughts?

Why would these fucking idiots design a printer that has this issue. Not only is it a stupid design, but the tensioning method is stupid too, it could easily be two screws adjusting it, rather than screws clamping down blocks. DO NOT BUY BAMBU, IT'S $2,000 FOR PRINTERS THAT DON'T WORK.

I’m having trouble removing the rear panel. Can you advise me as to how you removed yours? Thx

Thank you so much for getting to the point without annoying music or intros. Subscribing just for that.

Amazing video, super helpful for a beginner like myself! Thanks so much

Hello, Thanks for making this video. Regardless of whether it ends up working for me (only time will tell), I gained significant knowledge from your methodology and explanation. Strange question though, its not of paramount importance but I thought I'd ask anyway. After you have removed power from your unit and loosened the tensioner screws, when you are moving the tool head around, does the light inside of your tool head turn on periodically? I'm not sure if the P1S has a toolhead light, but the one that activates on my X1C is in the front cover plate and is responsible for lighting up the logo on the cover. Very strangely, when i move the toolhead around with enough speed, despite being completely unpowered, the light on the toolhead will flash on for a moment. I imagine enough power is being generated when I move the tool head that it can power the light for an instant. Surely all units do this, but I wanted to make sure my unit isnt defective by asking here, since the wiki doesnt say anything and a cursory google search turned up no results. Anyone who reads this is welcome to respond, not just Ken.

Other videos skipped like 3 steps, THANK YOU!!!

can you add your setting and filament settings

Why is mine not coming off

I’m a bit concerned how to reinstall the ams and the black ribbon cable, Bambu wiki says not to fold the black ribbon however when I’ve tried it seems impossible not to. Anyone else has this problem or can comment?

You sir, have gotten me back working after filament broke off in the extruder and down in the nozzle. Cheers!

Great, thank you very much. 🙂

I made a 10.16 benchy on my A1 mini. Good quality for the speed.

I made a 10.16 benchy on my A1 mini. Good quality for the speed.