Kid Mendel
Release status: experimental
Description | This is a highly configurable Mendel derivative built by Jungseo Park with a aesthetically simple look, driven by high-speed leadscrews.
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License | GPL
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The Kid Mendel is a printer designed by Thingiverse user JSPark, in South Korea. It is called the Kid Mendel for two reasons:
- The printer is an aesthetically simpler version of the Mendel or Prusa Mendel designs...
- Because of its simplicity, it is a good printer to use when introducing 3d printing to children.
Design
The printer follows in the footsteps of the Sells and Prusa Mendels; The extruder moves in X and Z, and the bed moves in Y. There are working Y Ends for both lead screw and belt driven. The Z axis is leadscrew driven as well.
The reason for all the alternative linear motion systems is preference and availability. Timing belts are hard to come by in some countries, and the quad-start high speed leadscrews specified for the printer are not available in the US.
The original design uses linear stepping motors; these are steppers that have a leadscrew machined onto the shaft. These are referred to as "leadscrew" or "leadscrew drive" through the rest of the page.
The other drive train options are threaded rod drive, belt drive, and threadless ball screw drive.
A belt drive has been completed for the Y axis. A threadless ball screw drive has been completed, but not tested, for the Y axis. A leadscrew drive has been completed for the Y axis.
A leadscrew drive has been completed for the Z axis.
For the threaded rod drive option, you can use Acme leadscrews, as long as the diameter of the rod is the same, and the nuts fit. Support may be added for Acme nuts in the future, but it is not a priority.
RP Parts
The bar clamp that holds the smooth and threaded rods is the same as the Prusa Mendel's....
Bill of Materials
Under Development!!
Quantity | Description | Comments |
---|---|---|
Fasteners | ||
100 | M8 Nut | Not all 100 are used, but it's better to have spares |
100 | M8 Washer | Not all 100 are used, but it's better to have spares |
?? | M3x10mm Screws | This number is not yet stable |
20 | M3x5mm Screws | This number is not yet stable; These are used for mounting the motors |
?? | M3 Nuts | This number is not yet stable |
Rods | ||
2 | 252mm 8mm Smooth Rod | This number is not yet stable |
1 | 300mm 8mm Smooth Rod | This number is not yet stable |
1 | 313mm 8mm Smooth Rod | This number is not yet stable |
4 | 200mm M8 Threaded Rod | This number is not yet stable |
6 | 260mm M8 Threaded Rod | This number is not yet stable |
2 | 300mm M8 Threaded Rod | This number is not yet stable |
1 | 316mm M8 Threaded Rod | This number is not yet stable |
Bearings | ||
1 | 608ZZ Roller Bearings | For Threadless Ball Screw Drive |
3 | 623 Roller Bearings | For Threadless Ball Screw Drive |
Upcoming Development
- Option for seperate lead screws
- Option for Threaded Rod XYZ axes
The original motors used are hard to source for many parts of the world; the leadscrew is attached to to the motor, instead of using a printed or machined coupler...
A known source for these for those in South Korea is http://www.motorbank.kr/shop/goods/goods_view.php?goodsno=2854&category=006006