Tuesday, December 14, 2010


Reprappable Inkjet Head

This is an inkjet head that is completely makable in a RepRap machine. It was inspired by Johnrpm's Scratchbuilt_Piezo_Printhead.

It has only three reprapped parts. The other parts are standard easily-obtainable items. There is no machining involved in making it - the only tools needed are scissors, a scalpel or razor blade, a hammer, a short piece of 3 mm steel rod to use as a punch, and a glue gun.

It uses a piezoelectric buzzer to drive the ink.

It is experimental, so it's reliability is not yet perfect... But it does work.  Here's the video:

Reprappable inkjet head from Adrian Bowyer on Vimeo.

I need to do more development on the driver electronics. Then I'll see if I can add heater elements so we can inkjet waxes and wood's metal...

Details are on the RepRap Wiki here.

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Adrian looks cool. Something I have been thinking about for a bit but never got around to. Well done.

I have used the LT700 audio output transformers (maplin amongst others) for a few step up applications by driving the secondary.

I seem to get a step up of around 10 to 1 or more. (never really calculated it properly).

For a 12v feed this should be sufficient after rectification and reservoir to give you a useful 100v+ supply that can be switched using high voltage transistors.

Cheap cheerful and readily available.
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