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[Solved] how to replace broken extruder body  

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anricco
(@anricco)
Active Member
how to replace broken extruder body

Hello,

Thank you. Unfortunately the extruder body broke while printing a highly warping material, as in the picture, because the PINDA sensor kept hitting the object on the printing bed. Also using superglue has prove an ineffective solution for the broken part. Since this MK3S printer was bought as an already built printer, if possible it would be very useful a guide on how to disassably only the parts that are useful to replace the extruder body, since there seems to be only a guide on how to replace the hotend. Wish you a nice day.

Looking forward to hearing from you, thank you and best regards.

A.R.

 

Posted : 18/09/2021 1:54 pm
Walleye
(@walleye)
Eminent Member
Replacement Parts

Hi,

You can order a replacement from Prusa. Look for the Spare Parts tab on the main Prusa page.

Posted : 19/09/2021 3:19 am
anricco liked
anricco
(@anricco)
Active Member
Topic starter answered:
how to replace broken extruder body

 

Posted by: @walleye

Hi,

You can order a replacement from Prusa. Look for the Spare Parts tab on the main Prusa page.

Hello,

Thank you for your answer. In fact the replacement was printed in black ABS before the definitive break down of the part. So the question would be about the procedure to replace the extruder body, that is, which parts have to be disassembled and which parts can be left in place in order to make the replacement. Maybe somewhere there is an appropriate guide with the steps. Wish you a nice day.

Looking forward to hearing from you, thank you and best regards.

A.R.

Posted : 19/09/2021 6:13 am
Dan Rogers
(@dan-rogers)
Noble Member
Look at the assembly manual, and go in reverse

There is quite an involved process, and the same manual that you would use to assemble the printer (if you bought the kit) is your best friend for figuring out how to reverse assemble the extruder.  In general broad strokes, take off the four screws holding the extruder chassis to the X rails - that will let you separate the extruder mechanism from the printer.  Follow the assembly instructions in reverse - you will need all of the tools that came with the printer (the different size and length allen wrenches).

The assembly manual is on line.  And you can probably purchase the paper copy from Prusa (the on-line version is more up to date).

Posted : 19/09/2021 10:45 am
anricco liked
jsw
 jsw
(@jsw)
Noble Member

I have not had to use any of it yet, but as this post points out, I think one of the best 'preventive' measures that anyone can do with the I3 series is to print spares of the extruder parts, those most likely to get damaged during a Blob Of Doom Meltdown.

I did this shortly after getting the machine, black ABS, and have the pieces in the 'crash kit' in the event of an issue.

I do have a spare print fan shroud in there, but since I printed the spares I have switched to a remixed one, printed in PC Blend.

Posted : 19/09/2021 9:11 pm
anricco liked
cwbullet
(@cwbullet)
Illustrious Member
instructions

I would follow the directions in reverse:

https://help.prusa3d.com/en/guide/5-e-axis-assembly-textile-sleeve_71288

You will not have to do it all, but read all of the instructions forward and backward before attempting.  

--------------------
Chuck H
3D Printer Review Blog...
Posted : 19/09/2021 9:56 pm
anricco liked
MichaelK
(@michaelk)
Eminent Member
Check the upgrade instructios.

You could also follow the disassembly instructions in the upgrade section.

https://help.prusa3d.com/en/guide/2a-mk3-extruder-disassembly_182045

Posted : 21/09/2021 3:27 am
anricco liked
anricco
(@anricco)
Active Member
Topic starter answered:
how to replace broken extruder body

Hello,

Thank you for all your answers and kind explanations. Apparently the only way is to fully disassemble the printing head. On the bright side this will be an opportunity to learn the procedure. Hopefully it will be possible to do it without unplugging all the cables. Wish you a nice day.

Looking forward to hearing from you, thank you and best regards.

A.R.

Posted : 23/09/2021 11:39 am
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