H2D - Bad surface quality

Hello, my new H2D has arrived.

I must say the surface quality of the print is way worse than on my other two P1S.
The surface texture on the side walls is rough and it shows a quite some stringing. Same filament on my P1S and the same print comes out perfectly.

I have run all calibrations and I use the standard PLA profile in my Slicer. Also I get the same results if I feed from the external spool holder as well as from the AMS2. I tested also 2 brand new filament rolls. Did I miss something to setup?

May it be that the H2D is more sensitive to moisture? I now try to dry the filament.

Picture: left part from P1S and right part from H2D (exactly same filament roll, same settings, 0.4mm hotends each)

I’ve experienced very similar things on my H2D on a handful of prints as well.

For what its worth… I initially thought the same thing, but after a few hours of printing things definitely improved for me. Now I feel like the H2D is laying lines better. (Also note, mine wasn’t as bad as yours, but it was noticeably off)

Not sure what made that happen, or what changed the outcome, because I didn’t change anything. For me the initial issues were poor line stacking, so its possible the automatic nozzle calibration helped when I started doing two nozzle prints… don’t know.

My suggestion, run the nozzle calibration and keep an eye out for improvements. Again not sure if it was the calibration or some belt anomaly (or something else), but it is now the best at laying lines of the printers I’ve had.

I dried the PLA filament now for 4 hours at 50°C and repeated the same print. It looks better now, but still worse than on my P1S (with undried filament).

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Actually, mine looked like yours not the second person, and it improved substantially over time. Still, I’d run the calibration tests for the nozzles (there are two) and keep an eye on the performance. Drying filament is useful for top tier quality, but line stacking normally isn’t something that is improved with drying. Drying will clean up micro bubbles (and their bursting) causing bad surface finish, but how it stacks lines normally isn’t apart of that.

Sounds promising :slight_smile:
Which calibrations did you exactly do? Flow rate and dynamic?
I have run all the initial calibration without improvement.

I didn’t do anything, I just keep printing and it cleared itself up. But to try to push you along without having to wait the first 30-40 hours, I would say run the two calibrations on the printer’s settings interface.

Its possible you already have one set to automatically run, but the second is the ā€œHigh Precisionā€ calibration for the nozzle offset. Granted… they are both Offset calibrations, but its close enough to the problem to give a try.

I wonder if the vision plate would help this issue since it should in theory compensate for belt issues and all

Hi, same problem. I opened a ticket regarding this failure. Have you contacted the customer service?

Ok, I will contact service too.

Does offset calibration matter if you’re just using one nozzle?

Offset calibrations are to make sure the two nozzles come back to the exact same spot when you change nozzles, but since this is a problem with the nozzle returning exactly where it should, I figure it’s worth trying. Not going hurt anything or waste money trying it (maybe a little time, but nothing substantial).

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I’ve noticed the same issue with unusual looking finish on walls. My printer got lost after traveling from California to Pennsylvania. A week later showed up in Arizona. Made it but package very damaged. Dropped off from FedEx without me there. I opened a ticket and after a week some contact made.
The issue of broken glass, popped side cover were addressed I added a notable harmonic vibration at 60% part cooling fan. They wanted the machine returned with an available A-B option. Return for replacement or invoice new machine to expedite shipping replacement unit with a refund after returned printer received by them. Logistics, money all not good with me. They were great with the offers but my original plan of replacing damaged items was my final choice. I believe, for my unit, odd finish on walls is coming from the cooling fan with the harmonic distortion running through the machines large head and transferring onto the part. Tests for me have shown me this through no fan to 100% fan. Somewhere in-between (50-80%) fan it showed up. Unbalanced? Damaged from all the broken glass? Who knows. When the replacement fan comes I will test it before putting it in the machine. I’d like to do a side-by-side comparison also.
Bambu Lab also knows in a statement in many texts that a machine of this caliper and cost I will not buy and have it shipped that far away. I might very much like to have something like this that comes out in the future but if it’s not available stateside I’m going to have to pass. My x1c and p1s do produce much better finishes in certain applications. So I will use the HD2 for specific applications and have to rely on higher quality finish for customers from my other two printers. It’s a marvelous machine it has some bugs but again once I started talking with bamboo they were very helpful and I await the parts to repair my unit. Anyone without any practical mechanical experience should stay away from something like this stay with a simple plug and Play that they offer and other companies offer and a much more palatable price range. That’s just in case something happens along the journey of being shipped.

Did you also file a claim with FedEx? Surely this was sent insured. I don’t know all the ins and outs, but I had a badly damaged package once and filed a claim with UPS and they reimbursed me for the damaged product. Granted, that was a $300 product, but you might explore all options to at least help with the expense and hassle.

I’m having similar wall quality issues on my H2D - and I just got my vision plate and ran the calibration.

Re-running a prior print that didn’t turn out so great to see if it did help.

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So I did back-to-back prints of the same part. One before the vision encoder, and one after - and the after is noticeably smoother.

I didn’t think it’d make that big of a difference… Which is weird.

I’m going to have to do more testing [I want to make sure this isn’t a fluke].

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Yes I did. I went to multiple FedEx agents trying to find out what was going on with my package hanging in limbo in Pennsylvania. And the tracking started after a week back in Arizona, travel across the country to Pennsylvania once again where it’s at for a couple days and then I finally received the damaged package. No one at FedEx could tell me what was going on we’re chose not to. One of the representatives of FedEx said I could file a claim. When I didn’t get any response from them after a couple days I spoke to another representative who said I have to contact the shipper which would be Bambu Lab. She said the first representative was incorrect. They didn’t want to take any accountability but then after a few more days this is when the whole conversation with Bambu Lab started. As I said before lesson learned that I will only buy a product if it’s available in the states. That was way too much money and there are some issues with performance such as adhesion of different pla polymers of different brands of adhering to one another. FedEx is a horrible company I’ve had issues with them in the past. My replacement parts and perks for my time spent are on their way and supposed to be here in one or two packages by the 29th of May. Hopefully they come intact.

I know it’s not Bambu - but I ordered a Core One from Prusa when it was available - the fully assembled unit because that’s all they had at first [I like the kits, honestly.].

It was shipped via FedEx and it showed up so damaged that it literally was falling apart as I tried to take it out of the box. Prusa was even like, ā€˜We test dropped this machine in this packaging from 60+ feet and it was fine, what on Earth did they do to your printer?!?!?!’

They sent me a new one via DHL - arrived faster and in perfect shape.

The TL;DR is that I hate FedEx too.

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Where there’s a will there’s a way, and couriers are damned determined to make sure some packages barely make it to your door in one piece. I had a filament box fall into 3 pieces when I picked it up from my doorstep 2 days ago. The spool was fine somehow but I can only imagine the delivery guy drop kicked it from the truck as one last ā€œscrew youā€ to the package

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Sheesh you are the second person I see tonight that lives in PA and got an H2D delivered from California only for it to be damaged. Makes me nervous about the arrival of my h2d coming from CA to Mass. 3,000 miles.