Plastic tube near the hot end needs replacement — need help

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suvl
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Joined: Sat Jul 11, 2020 9:37 pm

Plastic tube near the hot end needs replacement — need help

Post by suvl » Sun Jul 12, 2020 6:31 am

Hi guys. I have this plastic tube near the hot end.

Image

It is clogged and burned beyond repair. I need to buy another one or anything like it. Right now the filament will clog before reaching the hot end and make a mess, nothing gets printed. What am I looking at and what do I need to buy?

Image

Image

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William
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Re: Plastic tube near the hot end needs replacement — need help

Post by William » Mon Jul 13, 2020 4:27 pm

I'm sorry I can't view the pictures. Can you provide a video? You can upload compressed files here.
-Keep your mind and try to test it. :)
-Everything will be fun!-Support all Getech printer.
-You can ask me the questions and I will kindly reply.
-Respect others is the best way you can get help!

GAQ
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Joined: Mon Jan 08, 2018 9:10 pm
Location: Manchester UK
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Re: Plastic tube near the hot end needs replacement — need help

Post by GAQ » Mon Jul 13, 2020 11:37 pm

Go on Amazon/Ebay depending on preference...
Type 'Throat tube'
Get something like this...
40mm will work on your proB
https://www.amazon.co.uk/IZOKEE-Extrude ... 163b7d9294

suvl
Posts: 3
Joined: Sat Jul 11, 2020 9:37 pm

Re: Plastic tube near the hot end needs replacement — need help

Post by suvl » Tue Jul 14, 2020 6:43 pm

Solved, it was the teflon tube as @GAQ said.

But then I bought a new M6 screw with tube inside and then the tube broke :o

Image

The whole hotend is also in very bad shape, i.e. the screw on the heating block is quite bad. What should I replace it with? In the spirit of upgrading, what are my options while keeping the MK8 motor and feeder?

Thanks!

GAQ
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Re: Plastic tube near the hot end needs replacement — need help

Post by GAQ » Fri Jul 17, 2020 10:54 am

Hi Suvl,

Well that looks grim !
I've never had to put any torque at all into the throat tube when changing.
I have found that once I've taken it all apart, I can screw the tube up into the extruder just with fingers...
I then do the same with the heater block.
I check that the nozzle can touch the end of the throat tube ptfe before it is fully screwed into the heater block.
I do this by screwing the nozzle into the heater block (Just with fingers), then once all the way in, I unscrew it a couple of turns...
I screw the throat tube from the other side until I can feel it touch the nozzle.
I then screw the lot into the extruder.
At this point, it's all still only finger tight - no good for printing.
I then heat up the block...
Once it is hot, I hold the heater block with large adjustable spanner or pliers... Careful not to grab the wiring !
I hold the block stationary whilst I use a small spanner to tighten the nozzle.
This tightening MUST be performed with the block/nozzle at temperature.
Once done I check the e-steps (Though I've never found I have to change much here)

If all else fails, you can buy the complete throat / block / nozzle assembly quite cheap on Ebay - either with or without heater / thermister.
They're quite cheap.
If you buy a complete assembly, you should still get the block up to temperature and check the nozzle is tight before trying to print !

Gerry

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