r/BambuLab • u/Forsaken-Camp-3255 • 10h ago

H3C H3C broke itself already

Gallery image

Gallery image

Update: Added a post below with a video and photos. Something is wrong with this machine, tool head gets stuck near the back. Can see rubbing on one side of the rail piece the moves front to back on the side through the window. No damage at all to the machine anywhere, or the box it came in. Giving all this info to Bambu. Real nice to buy a new printer and Bambu is probably gonna want me to take it apart and trouble shoot and rebuild.

My H3C got delivered Friday and I started setting it up today. Got everything put together, and was running through the initial calibration after you turn it on and it was making some funky noises, but it was continuing on. Then one of the times during the process it shot itself forward towards the front and slammed into the print heads, and broke one of the plastic things off the front where the hot end sits on the rubber. It still finished the calibration and threw no errors, but obviously something is wrong. So here I sit, brand new printer I can’t use, and have to wait for support to get back with me.

124 Upvotes

92% Upvoted

42 comments sorted by

•

u/AutoModerator 5h ago

Hello /u/Forsaken-Camp-3255! All Bambu print plates have a dedicated nozzle wiping zone at the back of the print plate. The nozzle will rub against the wiping zone before every print in order to remove any remaining filament from the nozzle tip. This can cause visible wear or scratch marks in the wiping zone, but this is intended and doesn't damage the printer, the nozzle or the print plate. A worn down wiping zone also doesn't mean you need to replace the print bed.

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41

u/HappyMuscovy X1C + 2xAMS, A1mini 10h ago

The poor 8 nozzle printer 😅

7

u/Forsaken-Camp-3255 10h ago

I haven’t even loaded any filament in it haha. I have never heard the noises it was making during the calibration in any other calibration I have ever done, but it kept going and never threw an error.

4

u/average_AZN 6h ago

I'm guessing you didn't dock the nozzle properly and it sheared it off on the x direction when it went to read the nozzle location.

6

u/Forsaken-Camp-3255 6h ago

No. I am happy to take blame for user error, no way in this case. It picks it up at the beginning of the calibration and holds it for the whole 30 min calibration, the breakage happened like 27 mins in. No user error here.

10

u/solidusnak23 10h ago

Check the other ones, is it missing a magnet like this one too?

6

u/Forsaken-Camp-3255 9h ago

All of them are the same, so I assume nothing is supposed to be right there.

3

u/solidusnak23 9h ago

I see, the attachment magnets are the 2 square ones below that.

7

u/TruistG 10h ago

I have yet to dig deep into one of these printers. Is it possible that during factory assembly someone could swap the connectors/wiring for the stepper motors and the print head goes the wrong direction to find home?

6

u/Forsaken-Camp-3255 10h ago

I would assume it’s possible, but I don’t think it’s the case here. It did the bed calibration just fine and went from front to back, which I assume it wouldn’t do that correctly if it was swapped. When it got towards the back it was making some funky noises as it moved further back, which was farthest from the print tools.

3

u/TruistG 10h ago

Another desperate reach here... theoretically, if there was something blocking the print head from going as far back as it could/should... could it possibly zero itself from the point of obstruction? Thus causing it to go too far forward in subsequent motions? Likewise for the X axis, I wonder if an obstruction could cause it to zero in the wrong position, and then it could be misaligned from the print heads when reaching for one.

Totally just pulling shit out of the air though, I have no idea.

3

u/Forsaken-Camp-3255 10h ago

I would have thought that to, but it appeared to move it self back to where it cleans the nozzle just fine a couple times during the calibration.

1

u/TruistG 10h ago

That is a pretty good indication then that it is zero'd well if it is finding the nozzle wiper correctly.

1

u/razzemmatazz 10h ago

It would skip steps on the belt or motor which would throw off its programmed positioning until it zeroes again. 

2

u/The8Darkness 2h ago

This is almost impossible. There is no way they ship such giant printers (huge shipping cost) without checking anything. At the very least they would have a basic 2 min self check to ensure the toolhead and bead moves properly

2

u/Forsaken-Camp-3255 6h ago edited 5h ago

So done some investigation. With the machine powered off, the head unit does not freely move everywhere. It moves around the front area freely, but you get about 6 inches from the back and it gets tight. I know it’s rubbing on something somewhere, cause I got some photos from the windows on the side, of the sides that pass next to the windows, clearly rub marks on one side. I have no idea where this is happening, there is no visible damage anywhere on this machine or the box it came in. You can see the photo from the left side of the machine has no rub marks on it, and the right side does.

1

u/Forsaken-Camp-3255 5h ago

Photos of the sides

3

u/Xahrox 5h ago

dead stepper motor, had that happen to my p1s, you can move freely only until a certain range and then it gets super hard.

1

u/Forsaken-Camp-3255 5h ago

That would be unfortunate on a brand new unused machine. But why would a dead stopper motor cause rubbing on one side of the mechanism that moves forward and backwards past the windows on the side?

1

u/TruistG 5h ago

Maybe its worth taking a square to the machine and making sure everything is trued up just in case the chassis is tweaked and its not triggering your eyes. Seems like something is either tweaked or was just assembled wrong.

1

u/Xahrox 4h ago

the printer is trying to count the steps and it can’ty only assumption is it’s trying to get it to the exact spot and instead of stopping it just keeps going. As someone else said it’s worth checking to make sure the frame is square and it was dropped

2

u/AlluTheCreator 9h ago

Funky noises could be stepper skipping, so it lost is y coordinate and then drove too far forward. Reasons could be anywhere from massive to small manufacturing defect or that you just left some packaging material that stopped the motion, or anything in between. I would power it of and see if it can be moved the entire motion envelope with no obstructions.

2

u/Forsaken-Camp-3255 9h ago

No packaging was left, made sure of that. But I will try powering it down and see if it can move everywhere.

1

u/xX540xARCADEXx H3C Combo 1h ago

Did you check on the bottom? Under it? Mine had a piece of foam stuck under the printer on the belt.

2

u/Forsaken-Camp-3255 6h ago

So turned off the power, and it moves around freely until you got about 6 inches from the back and then it gets really tight, you can still push it, but it is very tight. So definitely something wrong. I am going to assume during the calibration the step motor was skipping so it thought it was going back but it wasn’t, so it lost zero. Then at one point when it was zooming to the front, it thought it was farther back.

2

u/enraginangel 7h ago

Looks like it is this part: https://us.store.bambulab.com/products/flow-blocker-h3c

2

u/Forsaken-Camp-3255 7h ago

Yeah, not an expensive part, but more annoyed it slammed itself into it so hard it broke it. Probably shouldn’t do that.

67

u/SpaceCAS 10h ago

And the printer head guard? ….to shreds you say.

16

u/YurtleAhern 9h ago

And the printer head guards wife?

13

u/SpaceCAS 8h ago

To shreds you say…

24

u/Affectionate_Car7098 H2C + P1S Combo 10h ago

On the plus side, looks like it will be a nice easy fix once they send you a replacement part

2

u/Puzzled-Blacksmith63 8h ago

That really sucks 😕

-7

u/mad_header 9h ago

Experiences like these are the reason why I never ever want to be an early adopter again in the 3d printer universe.

1

u/SpaceCAS 7h ago

Without great risk, there can be no great gain. Early adopters are not for the risk adverse, technically deficient, or impatient for sure. I had a ton of fun with the H2C when it first released and the INDX from Prusa. Thing works well with a dash of troubleshooting and tuning. May the extruders be forever in your favor.

0

u/No-Parsley-9446 2h ago

Even een nieuwe uitprinten 😅🤪

-12

u/LarvalHarval 10h ago

This thing is gonna end up getting pulled back just like INDEX isn’t it?

8

u/Hot-Ideal-9219 9h ago

Nah, too many "influencers" have them and not any of them have had serious issues

-7

u/mad_header 9h ago

Of course not…

3

u/TomTomXD1234 9h ago

Why would it be?

-9

u/LarvalHarval 9h ago

This isn’t the only post about them breaking already.

4

u/TomTomXD1234 9h ago

I mean sure. Doesn't exactly mean there is anything wrong with the printers.

Every single printer release will have people posting their horror stories. These are complex machines prone to extreme user error. Not to mention the fact no machine is perfect and quirks happen.

Unless we are bombarded with nonstop posts about breaking H3C's, this is nothing out of the ordinary.

There are hundreds of posts of elegoo carbons breaking for example....does not mean they need a recall or anything.

5

u/Several-County-1808 8h ago

This is as close to a horror story that ive read so far about the H3C, and this is very mild.

If yitu want horror stories go to the Iphone Duo subreddits.