#printer tube before nozzle has a clog?

72 messages · Page 1 of 1 (latest)

oblique hare
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trying to print something, for some reason, it wont extrude anything during the print. when it does the calibration line on the side, itll do a small dimple, but then just nothing would come out for the rest of the time, even though the extruders turning. once i stop the print, it leaves a dimple of filament, and then stops, which tells me that its probably not an extruder issue, so what is it?

rigid plover
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hotend is clogged

oblique hare
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new nozzle?

rigid plover
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google "cold pull", it should work

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after that make sure that your bowden tube is cut under 90 degree, inserted all the way in and secured in place

oblique hare
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everythings fine, but when I try to extrude the pla, it won't come out, so I take apart the nozzle and push the pla out, and it ends up like that, and did that multiple times

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or i mean it could be the nozzle, because when I push it in and out w/o the nozzle nothing happens

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yeah not the nozzles fault, did it w a new nozzle and same thing

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printer tube before nozzle has a clog?

rigid plover
oblique hare
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hm?

rigid plover
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your tube is not all the way in

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remove clog and all filament, tighten in the nozzle properly when it's hot

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then push the tube all the way in

oblique hare
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id have to unscrew the coupler to pull the tube out and in right

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seems like it

rigid plover
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it should have this blue or whatever thing

oblique hare
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is that all?

rigid plover
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when it's removed, you press on plastic thing, and it should release the tube

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if it's not of terrible quality

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don't forget to put it back on after inserting your tube, or it will wiggle away again

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hm

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other possible problem is that your nozzle is not touching the heatbreak

oblique hare
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how would that happen?

rigid plover
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sometimes nozzle threads are too short for your heatblock

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if you have calipers it should be easy to figure out though

oblique hare
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yeah my plastic thing is horrible

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wont go down

rigid plover
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then you'll probably have to unscrew it

oblique hare
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i feel like whoever made my printer has anger issues or something

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every single part on it is insanely tight

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getting the whole block off the railings while trying to unscrew it lol

oblique hare
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like I unscrewed it and its up a bit, but cant get it down back to where it was

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yeah i did something wrong

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tube didnt come out

rigid plover
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can you pull out the other end of the tube?

oblique hare
rigid plover
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"real hot" is usually unnecessary, it's probably held in there by molten filament, so 150 should do

oblique hare
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saw in other videos people pushing the tube all the way through from the top to the bottom where it comes out, and it seems like I cant get my tube out all the way, so i feel like theres a blockage

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but then i dont see one anywhere, so not really sure whats the problem

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tube just doesnt go any further after a certain point, but even after same results as before

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so either theres a gap and its not going through or its another problem

rigid plover
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not going down?

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if your heatbreak is still screwed into the radiator, then it'll stop when touching heatbreak

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that's normal

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here's more accurate image

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basically you need to make sure that there are no gaps in these places

oblique hare
# rigid plover

then dont think so, i mean feels like tubes going in as deep as it can

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i mean in that case what else can be the issue?

rigid plover
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then there's a gap between the nozzle and the heatbreak

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with that clog shape it's clear that there's a gap to expand into

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well, from photos I can't see major errors from your side, but none of them have the nozzle installed

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I'll assume that you screwed it into the block all the way

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and it still haven't reached the heatbreak

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since nozzle looks like of the right size on the bed, problem is either heatbreak, it's installation (which doesn't seem like the case from first photo) or the heatblock size

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so the easiest fast fix that I could think of is trying to screw heatbreak deeper into the heatblock

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  1. remove central screw (black one on the radiator), remove vertical side screws that are going through the heatblock into the radiator
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  1. pull out heatbreak with heatblock out of the radiator
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  1. screw the nozzle into the heatblock until there's a gap of about 0.5mm
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  1. screw the heatbreak into the block all the way in against the nozzle
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  1. reinstall the heatbreak with heatblock again with all 3 screws
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  1. heat up the hotend to 230 degrees Celsius and tighten nozzle a bit more with a tool while it's hot
oblique hare