Push-fit Hot-end for 1.75mm Filament (Bowden Extruder)

Here is my new 1.75mm push-fit Hot-end design to go with my Bowden extruder -







It's using PEEK and PTFE tube in a similar manner to the new design by Adrian.

More build info on my Blog, and thanks for looking.

Rich.

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[richrap.blogspot.com]

Hi Rich

What bore size PTFE sleeve are you using in the hot end with the 1.75 filament?

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Regards

Ian

Hi Ian

The PTFE tube is 4mm OD and 2mm ID, I could get a smaller bore with a tighter fit but as I wanted to use Pneumatic connectors I decided to try this size first.
This will be my first experiments using a Bowden extruder, so I expect I have lots to learn before it's going to work well.

If anyone knows any tricks and tips for getting it all working, I would appreciate any words of wisdom, especially how to deal with a Bowden extruder in software.

Cheers,

Rich

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[richrap.blogspot.com]

Hi Rich,

... how long is your tube?

Especially for the 1.75mm-filament it should be as short as possible ...

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Viktor
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Hi Viktor,

It is 35cm at the moment with just one slow 90 degree bend, Is that going to be a problem? I could make it shorter, but It's going to reduce my build height.

Rich.

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[richrap.blogspot.com]