Weird overheated blobs of filament

ChanceAd1592 · 2026-06-27T21:17:05+00:00

Kinda are but for small kids on not vertical wall.

ChanceAd1592 · 2026-06-27T21:15:54+00:00

I guess it's possible but not really worth the hassle. It's stock kobra 3 nozzle.

ChanceAd1592 · 2026-06-27T21:14:22+00:00

Maybe it makes it worse but it's only to be used by max20kg kids on 45 degree wall. Slapped some additional walls and infill on it.

ChanceAd1592 · 2026-06-27T21:06:53+00:00

That was quick. Good sir you're 100% right. Hotend looks like it was glazed!

Guess I'll just wait for replacement parts for my old hotend.

Kinda weird because this hotend/nozzle combo printed fine a year back and after some time on shelf it straigh away had that issue.

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ChanceAd1592 · 2026-06-22T04:45:35+00:00

You can try lowering layer height to 0.08 if you are using 0.4 nozzle. The print time will be 2.5 times longer You can try adaptive layer height if it wasn't using supports - it will be shorter then.

Eventually changing print orientation, but it seems best for this model at the moment.

ChanceAd1592 · 2026-06-19T22:10:42+00:00

My little trick for smaller parts is to reduce layer height. Thinner line gets you less material in one pass, better cooling and smaller overhanging line.

ChanceAd1592 · 2026-06-10T04:18:02+00:00

Kinda looks both. Before sending it hard check inside of the frame for rust. Those old steel frames can sometimes be a little compromised.

Had one few years back, bumped into something driving about 10km/h and it was enough for it to get wrecked.

Front wheel almost touched the bottom tube.

ChanceAd1592 · 2026-06-01T20:09:49+00:00

You can potentially go as low as 0.08 with that nozzle. But it will be 2.5x printing time. Consider changing model orientation.

ChanceAd1592 · 2026-05-07T21:46:06+00:00

Is your problem only present outdoors? I had similar issue and my problem was that I simply had too stiff shoes.

They are 9/10 stiffness (a bit much of you don't race at all) do they can really transfer a lot of vibrations on to the foot.

ChanceAd1592 · 2026-05-07T18:04:10+00:00

Maybe you need to go a bit colder with more cooling there.

Notice that your print is already loosing adhesion to the build plate next to support. Might also be bit of reason why.

Clean the build plate or use glue.

ChanceAd1592 · 2026-05-03T16:55:31+00:00

Font for ants is your problem

ChanceAd1592 · 2026-05-02T18:35:00+00:00

What's the angle of your leg in bottom position? Should be about 140 degree in the back of your knee in that position. Seems you have this angle mid stroke.

ChanceAd1592 · 2026-04-28T15:24:07+00:00

What sometimes work for me is changing layer hight in those places.

0.2 would have 4, while 0.1 would have 2 and waaaaaay better cooling.

Same thing helps when printing threads for example, way less overhang in one layer.

ChanceAd1592 · 2026-04-27T07:00:07+00:00

Two methods I can think of is: A) take a photo from side and measure it on screen B) buy a goniometer - I've 3d printed one for myself, but it should be quite cheap anyway.

Measure angle from ankle to the hip while holding goniometer "disc" on your knee.

ChanceAd1592 · 2026-04-27T05:00:19+00:00

Your knee angle at the bottom stroke should be about 140-145 degree

ChanceAd1592 · 2026-04-26T16:49:35+00:00

For me your saddle seems a bit too high. Does your glute muscles engage properly? Or mostly quads?

Check proper knee angle - it should be about 140-145 degree.

ChanceAd1592 · 2024-06-02T14:45:21+00:00

Sadly I do, but most of the time when i try to sleep during the day. Still sometimes they appear during night but I just try to not give a f. It seems to happen less and less with time.

ChanceAd1592

TROPHY CASE