McWire Extruder Mounting

Hey, I am considering building a McWire Repstrap. I was just wondering how I would mount the Makerbot extruder (http://store.makerbot.com/toolheads/plastruder/plastruder-kit-mk3.html) I am considering buying as the extruder, as it is designed for the reprap and makerbot, not the mcwire repstrap.

Thanks,
Tofurkeymeister

I am doing this configuration but have not started the build yet. I will be documenting the build here: [replibot.blogspot.com]

I will start after Christmas.

I have both a complete McWire and a complete MakerBot extruder. I haven't gotten it mounted yet, but will most likely use some angle aluminum. Also, I will be converting the McWire to belt driven X and Y axes, as the screw drive is just too slow for reasonable build speed. I'll document both on my blog when I have time.

Is the McWire design that slow? Will it take me forever to print, say, a set of Mendel parts?

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Yes The McWire is much slower than using a belt drive system. 6mm threaded bar

I made a McWire / still have a McWire I have used it with a Dremel as a CNC the Dremel is now mounted in the Bertha CNC which is almost twice as much movement per revolution using a simple/low cost 10mm CNC Trapezial threded bar that gives 2mm movement per revolution per 200 steps. Bertha runs its steppers at 32Volts 2A using microstepping controllers

Big bertha uses expensive puka 16mm ball screws for X and Y that gives 5mm per revolution / 200 steps. I think that is near enough the same movment per revolution as a Darwin belt drive someone will corect me if Im wrong.

Big Bertha runs its steppers at 50Volts @ 4A using even higher resolution microstepping controllers.

Edited 1 time(s). Last edit at 12/18/2009 07:23PM by BodgeIt.

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Bodge It [reprap.org]
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BIQ Sanguinololu SD LCD board	BIQ Stepcon	BIQ Opto Endstop
BIQ Heater Block PCB	BIQ Extruder Peek clamp replacement	BIQ Huxley Seedling
BIQ Sanguinololu mounting	BIQ standalone Sanguinololu or Ramps mounting	Print It Stick It Cut it

My rep strap: [repstrapbertha.blogspot.com]

Buy the bits from B&Q pipestrap [diyrepstrap.blogspot.com]
How to Build a Darwin without any Rep Rap Parts [repstrapdarwin.blogspot.com]
Web Site [www.takeaway3dtech.com]

Darwin is 40 mm per revolution for the x and y steppers and 1.25 mm per revolution for z.

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Darwin clone, Gen 2 electronics, Arduino Duemilanove w/ AtMega328, 5D Firmware, Pinchwheel extruder
[www.codeerrors.com]

With the McWire, it ends up being 1.25 mm per revolution for all three axes, which is 32 times slower in the X and Y than the Darwin. Hence the reason for me switching it to belt driven. It looks like it will be quite simple to do, I just need to get some belt and pulleys.

Edited 1 time(s). Last edit at 12/19/2009 12:51AM by NewPerfection.