3DPrinting

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3DPrinting is a place where makers of all skill levels and walks of life can learn about and discuss 3D printing and development of 3D printed parts and devices.

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Swiss Micro consistent clogging of nozzles? (slrpnk.net)

submitted 2 years ago by [email protected] to c/3dprinting

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While I'm waiting for more nozzles to arrive in the mail, I'd thought I'd ask the new community here for their thoughts on my issue with the Swiss Micro All-Metal hot-end. Since upgrading to it, I haven't noticed a remarkable difference between it and the stock one in terms of nozzle wear and clogs. I've reassembled it, I believe twice now just to make sure everything is to spec installation-wise. I also haven't ruled out human error and have tried adjusting settings like retraction, as well as trying to not leave filament in it while cooling down. However, the nozzles and heating block still are covered in blackened goo, and the nozzles only last for about a month (with fairly light, and infrequent use).

I should also mention, I'm not using exotic filaments or crazy combos, just PLA or PLA+ kept in dry, sealed storage.

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[–] terawatt 2 points 2 years ago (2 children)

If you are experiencing leaking around the nozzle and heating block, you probably have not properly seated the nozzle. Remember to not completely tighten the nozzle until it’s been heated to a higher temperature (say 250C) then completely tighten to get a good seal.

When you say light use before nozzle changes are you seeing the nozzle hole get larger or the tip worn down?

[–] rambos 1 points 2 years ago

Yeah I agree its probably not assembled well. Even if you wear out nozzle it will not clog. Clog will happen if you print on too low temp or if you have huge retractions with insufficient cooling, or just bad assembly

[–] [email protected] 1 points 2 years ago (1 children)

I may do another complete disassemble and reinstall again just to triple check. And the nozzle appears the same just clogged and dirty

[–] terawatt 1 points 2 years ago

After you address the leaking, you may want to spend some time tuning retraction. For MicrSwiss hot end, the retraction settings is lower than the usual Ender3v2 setting - for my CR-10 Mini I have the retraction set to 2.75mm.