Huxley

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Revision as of 08:14, 29 April 2010 by MarcusWolschon (talk | contribs) (parts)
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Huxley

Release status: experimental

Mini-mendel.jpg
Description
License
unknown
Author
Contributors
Based-on
Categories
CAD Models
External Link

A miniaturization of the Mendel design. The machine uses M6 threaded rods and M3 nuts and bolts (as opposed to the M8/M4 used on Mendel) and NEMA 14 steppers. The reprapped parts are about 30% of the volume of those for Mendel, which is to say it could reproduce three times faster.

Here's a close up rendered by M.BrittCrane: MiniMendel.png

I've found suppliers for all of the parts, and the estimated cost of the Mini-mendel would be under 350 euros (in Europe). Note that because the design is not yet stable, you may need to order more to get everything working satisfactory.

<iframe width='900' height='400' frameborder='0' src='http://spreadsheets.google.com/pub?key=tw60t_E6G8tVNhBgMqAjcbw&single=true&gid=0&output=html&widget=true'></iframe>

<iframe width='900' height='400' frameborder='0' src='http://spreadsheets.google.com/pub?key=tw60t_E6G8tVNhBgMqAjcbw&single=true&gid=1&output=html&widget=true'></iframe>

You can ask ErikDeBruijn for edit permissions to this Google Docs sheet.


parts

Apart from the sources listed here, also check out the forSale-subforum in the RepRap-forum.

printed parts

electronics

Identical to Mendel or you can use the BitsFromBytes -electronics that allow standalone operation from SD-card.

steppers

Standard 3xNEMA14 and 1xNEMA17(extruder) steppers. Smaller and less expensive then on the full sized Mendel.

sources (steppers):


sources (A4983 stepper-driver):

(or use the BitsFromBytes-electronic that include stepper-drivers)

extruder

The MiniMendel contains a bowden-extruder that has less moving mass and thus higher speed due to the stepper not being on the print-head.

sources for parts:

timing belt

sources:

nuts and bolts

All metric and obtainable in every home-improvement-store. 608-bearings can be found cheap everywhere you can buy or repair a skateboard.

thick sheets

These 2 sheets can be cut from plexiglass or wood with simple tools.

success stories

ongoing development

  • Marcus created a Shelled MiniMendel that only required 110g of ABS and less then 10h to print. (It may be filled with epoxy after printing but that is not required in all cases.)