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Rich's Bowden Geared Extruder for 3mm filament

by Woodsmoke, published

Rich's Bowden Geared Extruder for 3mm filament by Woodsmoke Mar 26, 2013

Description

This is a geared extruder for Rostock, or any other RepRap printer. It is flatteringly identical to RichRap's recent remix. My changes amount to converting the extruder to accept 3mm filament, 1/4" to 6mm Pneumatic fittings and 4 ID - 6 OD mm PTFE tubing.

Recent Comments

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Would this work with a J-head?

I got these push-fittings:
http://reprapworld.com/?produc...

Now discover that I maybe overpaid a bit on them..

How does the 3mm filament do in your Bowden? I am planning to build my MendelMax 1.5 in the next weeks and give it a vertical X-carriage and a Bowden setup :)

Does anyone have a nice picture of both sides of this extruder assembled?

In that case, I will ask the public!

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Instructions

Assembly: Apply a little acetone or preheat the ABS locally before inserting the pneumatic fittings. This will ensure the snug fit and prevent the fitting from cheesing your ABS part.

Use: Consider using a light lubricating oil spray in the bowden tube if you are having trouble with filament friction.

UPDATE 27/03/13: The larger pneumatic fitting creates a smaller collar on the Hotend Mount. I have added another file (v2) that will be stronger as a printed part. 2 more holes need to be drilled out.

UPDATE: 29/03/13: More generous sockets have been added to all three printable parts. The original sockets were very tight indeed. The larger sockets still grip well while also making assembly a lot easier.

Remixed Sketchup files included. Remix on!

Comments

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Ohmarinus on Jul 7, 2013 said:

Would this work with a J-head?

I got these push-fittings:
http://reprapworld.com/?produc...

Now discover that I maybe overpaid a bit on them..

How does the 3mm filament do in your Bowden? I am planning to build my MendelMax 1.5 in the next weeks and give it a vertical X-carriage and a Bowden setup :)

michielh on Apr 22, 2013 said:

Does anyone have a nice picture of both sides of this extruder assembled?

michielh on Apr 20, 2013 said:

Will these push fittings work? http://www.ebay.nl/itm/Air-Pro...

Woodsmoke on Apr 20, 2013 said:

They will!

RichRap on Mar 26, 2013 said:

Nice remix, I've not yet tried 3mm Filament in a bowden extruder, but I may give it a go now, thanks.

Woodsmoke on Mar 27, 2013 said:

Cheers Rich, you did talk about 3mm filament in a recent video so I wasn't too sure what you'd think!

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