Hello everyone, in the last 2 days I can’t print anything, because in the preparation of the bed printing it forms bands of sintered powder that ruins the powder bed.
Anyone experienced this kind of problem that can help me?
Thank you
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I’ve experienced this n so much more… hard to tell off the little information and what your running/history.
However, what finally fixed all of our preheating and print start errors like this was bumping up to a 70% refresh rate with Nylon 12 GF.
Also, printing the vacuum attachment and completely sucking out both trays of powder AND rotating the dozer three complete rotation’s and sucking out all that powder, that was close to the heat of the previous print.
Lots of “wasted powder” $$$ essentially fixed all the warmup/initial printing issues like this.
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Hi, I have the same Problem, since 3 Years no Problem on printing PA12 70/30 Ratio. It seams with the new 10gk PA12 Pack we hav this Problem on every second Print job.
Please Formlabs what’s going on there, can you help?
Be sure all is very cleaned up before every new Print. It seams the sinterworms appear during heating up it 180° and appear at the upper Lid on top of the Built chamber. And the coaster gives the Rest, he pusch it inside the Flipper wich will block and the Print job is gone.
Why it habbend?
All is claean,
Please can someone help?
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Hi iqbox,
The issue seen in the screenshot can also be a hint at contamination in the powder (that’s the vacuuming tip leadnav talked about).
Before jumping to any conclusions however I’d like to take a more precise look at your current situation with your specific printer. I have reached out to you through our support system and hope we will be able to resolve this fairly quickly.
Kind regards
Jakob
Hi Jackob,
So many thanks for your comment.
In my Case its safe there is no Contamination, also humidity is perfect, really all is done, even cone and all Glasses is cleaned to avoid wrong Temperature measuring. Three Month ago I maintanced my two built chamber, Greased the moving Plate and replaced Fuse Build Chamber Inner Gasket. All runn smoothly.
until the Day a Sinterworm appear on my built chamber.
And it happen on both built chamber.
On top of the thin inner Walls of the Built Chamber, left Side and right Side, see Picture I marked it in red.
In my eyes it seams only in this red marked Sektors is Heat so high that th ePA12 getting sinterd.
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Have you updated software/firmware recently?
Hi Mario, yes I do.
Try rolling back to Firmware from Nov and preform 3.43. I 've had similar issues back in march and that fixed most of my problems at least I can manufacture now.
How I can go back? I ve never done before.
yesterday it took three Times to start a smooth Print, but also after 5 hours „error“ same als always.
Hey everyone,
I would personally not recommend downgrading your firmware.
What you’re describing sounds very much like what we call “perimeter melting”. This is usually caused by the heaters in the build chamber heating up too high for too long and powder accumulating on the frame.
In most cases this is an issue caused by imperfect contact on the build chamber plug, sometimes laurolactum buildup, sometimes bent pins ot just in general a bit of powder in either the build chamber plug or the printer recepticle, sometimes the seating of the plug itself can be compromised.
Could you post a couple pictures of your build chamber plug and recepticle?
First thing would be to clean both out with compressed air and potentially contact cleaner if you have it.
There is a picture of what that can look like on your camera feed in our Melting (SLS) support article.
Edit:
After getting the logs of the offending printer, we were able to determine that the air heater of this printer is underperforming by about 20°C. This could explain why the other heaters are working overtime to get the temperature of the cake up, likely causing these issues.
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Hello Jakob,
Thank you for the detailed and excellent support.
Yes, the air heater sounds good, that must be the problem.
I’ve already ordered the parts; we can replace them ourselves.
Thank you very much.
I’ll let you know as soon we replaced it.
Thanks to all, your so kind.
All the best
Guido
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What about pressure tests failure? I’ve replaced the filters with no changes and support never find out a solution I can send you the logs. The machine works ok, but our local partner told us we can keep operation with this alert however I think is not normal to have low pressure.
Do you use the snakebrush? That is really hopeful to use after every print and making sure the line is clean.
I do the machine is a fuse 1 quite old but with low hours 1200 when we received it. And it didn’t came with that brush actually the line was never cleaned before but until I got the brush and cleaned it. The brush doesn’t go through the whole chanel I understand that is has to go completely out the other side but it doesn’t.
One of the things I have done to reduce the risk of contamination was to get this mesh from McMaster-Carr. I cut it in half then place over the Hopper with magnets due to how the Hopper Lid is designed. I chose this specific mesh as it is similar to the Sift Mesh for PA12 V1.
I never remove the mesh unless I am about to place a cartridge.
I have had this issue caused by contaminates getting the hopper but by also using a Powder Refresh Rate (PRR) that was too low given the amount of used powder removed from the parts.
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I’m planning to do the same and have a mesh installed over the hopper to ensure no particles get inside.
Interesting to hear others are doing something to protect the hopper. I use blue masking tape! Remove and reapply when filling. I can usually get 5-10 applications on a round of tape.
I’m adding a gasket to seal between the powder cartridge and hopper to avoid dust and other particles that couples with the mesh should reduce contamination risk, I have cats and from time to time hair fly around.
Hi @Mario_Martinez
we’ve seen a few cases with older Fuse 1 printers throw an insolvable non-critical pressure error.
To my knowledge we’ve adjusted the values of how quickly this error should pop in newer firmwares, can you double check if you have the most recent one (1.22.0) installed?
In any case, we’ve seen printers that do exhibit this behaviour not produce any failed prints because of this.
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Latest firmware didn’t helped, I actually started getting weird errors after the update and using latest preform. SO I’m sticking with nov firmware and preform 3.43 no one pays for the wasted time and powder for testing and customers get angry when parts are not delivered on time. But is great to know that the persistent error is ok and I will not have issues related to this.