I was printing with Elegoo Rapid PETG because it was cheap, and now two of my Bambu Lab hotends are clogged. I measured the filament that went in there, it was 2mm. I can’t push filament through at any temp. So 2 of my hotends are just dead.
Do a cold pull. If no filament is sticking out then heat up the smaller hex key with a lighter and shove it into the filament inside the feed side. Let it cool completely. Heat up hot end of nozzle a bit then pull out the Allen key. The filament should come out of the hot end stuck to the end of the key.
I recommend following the instructions here: Nozzle/Hotend Unclogging Procedure for X1 | Bambu Lab Wiki
I recently unclogged a 0.2mm nozzle clogged completely with ABS using the allen key trick on that page.
No reason you shouldn’t be able to get them both unclogged
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I did it and it pulled out the filament. I was going to try them but the existing nozzle has junk over the heater and thermistor. I don’t want to deal with it so I’ll probably order an other thermistor and heater. Also, how is filament from a well known brand out of spec like that.
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Should be 1.75…(post must be 25 characters)
Yep, I know. Surprised it even fit in the hotend. Not ordering that filament again.
I’d contact Elego. It’s supposed to be +/- 0.02mm. 2mm would be like 0.25mm off. What did you measure with?
I measured it with digital calipers. I tested it with other rolls and they were around 1.75. Most of the roll was the right diameter and printed fine.
Just measured more of the roll, most of it is 1.85mm to 1.9mm. I ordered 2kg and just checked the other roll and it averages around 1.68-1.7mm, still out of spec.
I would give Elegoo a shout. That way they know there is a quality issue with x batches and hopefully they can make less ■■■■ in the future. They claim +/- 0.02mm hahaha
I agree. I don’t even know how filament that big and small got out of the factory. I also sent them an email. Just waiting for their response.
Thanks for the heads up, as I had just started to run some tests with Elegoo Rapid PETG. One thing immediately stood out: its maximum volume flow rate is 2x of any other PETG that I’ve ever tested.
Three questions:
- What color was it?
- What hotend temperature were you using?
- What nozzle diameter were you using?
- It was black
- I was using 250c
- I was using 0.4mm, but when i took a look in the hotend/ heatbreak, it had filament gunked up in there. Couldn’t push filament in no matter what.
Well, dang, I have the same black stuff then. I purchased mine March 1 from amazon. When and where did you buy yours?
I guess it’s unrelated to your issue of wrong diameter filament, but one thing I did notice was that it was stringing like crazy. I put it in the filament dryer and haven’t yet reloaded it.
The price was good, but it’s no bargain if it jams your nozzle.
I bought mine at the end of December from Amazon and I took it out of the package recently. Also, did you get 2kg or just one
I bought just a single 1kg spool. I wanted to test it before putting in a bigger order, which I probably would have done, but maybe not any longer based on your experience.
I once considered buying a dimensional analyzer to avoid this type of filament diameter problem, but I couldn’t find any ready-made ones at a good price. Tom Sanlanerer did a youtube where he made his own, but it looked like a project.
So yea I got 2kg. One is over spec (~1.8mm) and one is under (~1.68).
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I might look into that if I’m buying cheaper filaments. I got 3kg of another cheap PETG and I haven’t had any problems with it so far.
I have the X1’s hardened metal extruder. Not sure it would have made any difference to you though. Maybe if the over-diameter was short enough it could have just forced it through?
When it clogged, I didn’t have the hardened extruder. Also, the over-diameter was pretty big, probably a little less than 250mm long. I don’t have that one piece of filament anymore, but the rest of the spool is around 1.8mm
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