ultimaker syringe extruder

by joris, published

ultimaker syringe extruder by joris Oct 11, 2011
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A syringe extruder without any extra hardware. No extra motors, no extra anyhing from the hardware store! oh, yes, you need a washer or what i use now: a hose coupling and of course, you need syringes...
[sorry these are not the best pictures...]



  • Print the file in nice colours.
  • screw in on top of the ultimaker exruder head
  • use the existing plunge or print a new one and use just the rubber
  • now the trick: use the filament to push the plunge. For better retraction light the filemant and melt it to the plunge
  • play a little with the settings [extruder speed must be a lot slower!] and start with simple shapes
  • if the filament grinds, detach it from the plunge, cut 7 cm and melt again

what i still need is an extra thing to attach to the sliding blocks that could hit the end stops. It could be something very simple clicked or screw which you can remove easy when printing 'normal' again.

It should work more or less the same on a makerbot i think.
Let me know...!!

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I think i cannot replicate this with 1.75 mil filament?


You, are my hero!

Now where to get syringes... and chocolate, loads and loads of chocolate!

Syringes i get from the drug store [or animal doctor], without needles you don't need a recipe from a doctor in NL...

Good to know :) (As I'm in NL)

I have a few friends in medical professions. So I might be able to get needles O:-) do you think the chocolate paste will go trough a large needle?

I would lik to try...!! use the ones without sharp point, for infusion[?!] use. If you know where to get them, please let me know.

Both http://www.daxtrio.nl/http://www.daxtrio.nl/ and http://www.amstelmedical.nl/http://www.amstelmedical.nl/ seem to sell needles online. But in most in quantities of 100.

Daxtrio sells IV needles (Infuus = Intravenous = IV) per piece. Which seem to go from 0.8mm to 1.7mm

For something like 20 euro you can own your own set of IV needles!

I found an unlikely source of "thin extruder nozzle tips". I can verify that chocolate paste from the Jumbo flows nicely trough a 0.6mm nozzle (outside diameter 1mm, 0.2mm walls)

The source are "mechanical pencils" (vulpotlood), not exactly food grade material (well, some people do chew on them) but the supply is plenty-full and the tips are small. Best of all, I got a few at home.

using the filament to push the plunge... very clever !

(sort of "why they didn't think about that before ?" ^^)

Great idea! I just started working on a similar extruder and was planning to use an air pump I had on hand.

i used compressed air as well, works very good either...