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Huxley Paste Extruder

by mattroberts, published

Huxley Paste Extruder by mattroberts Aug 3, 2012
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9220Views 2879Downloads Found in 3D Printer Extruders
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Summary

A complete redesign of RichRap's paste extruder. This design will work on a RepRapPro Huxley.

Instructions

See http://reprap.org/wiki/Mattroberts%27_Huxley_Paste_Extruder for detailed instructions on how to build.

See http://richrap.blogspot.co.uk/2012/04/universal-paste-extruder-ceramic-food.html for hints on how to use.

You probably want to use the replacement x-carriage ( http://www.thingiverse.com/thing:27901 ) to allow for repeated switching of printheads.

Assuming you use a 200 steps/rev motor: steps per mm will be 765. This number is calculated in OpenSCAD - so if you change the gear ratios it will calculate the new value for you.

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9220Views 2879Downloads Found in 3D Printer Extruders
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That's just Awesome! nice job. On my list to print soon! 8-)

Hello: I am wondering if I can modify the motor mount instead of the NEMA 12. Could you leave the file?

how secure is the motor mounting to the extruder block? it looks a bit thin and any hard pressure could split the plastic layers?

I've had no problems. It is much stronger than the motor torque - which means for that the motor skips steps before the bracket gets damaged.

Obviously the statement above depends on the strength of your printers output! But, it can be easily changed by finding the "linear_extrude(height=2.5) {" line in the motor_mount_solids() function and increasing 2.5.

did you need to make any modifications to the firmware to accomodate this setup? what about the extruder stepper controller pot?

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