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Mendel90 Printed Parts Kit - 3D Printed Parts Kit

Mendel90 Printed Parts Kit

Mendel90 Printed Parts Kit
Item# mendel90-printed-parts-k90
Regular Price: $149.95
MakerGeeks Price: $79.76
Availability: Usually ships in 2-3 business days

MakerGeeks Description

Maker offers the printed parts needed to build the Mendel90; we'll also custom print in any PLA (plastic) color you would like and can also offer the "sturdy", "mendel" or "dibond" veriants on the Mendel90 GitHub pages. This kit will include all the printed parts you'll need... just add everything else!

Mendel90 is a design by Nophead that replaces many of the threaded rods and printed parts of the Prusa Mendel with flat sheets of MDF, Acrylic or any other stiff sheet material. This simplifies construction, stiffens the frame, and always keeps the axes at 90 degree angles, hence the name.

Compared to the Prusa Mendel, which it is based on:
  • Fully parametric across build area, motor size, rod size, and sheet material. You can customize all the parts and increase the build area, and the OpenSCAD model will reflect it
  • Stiffer, especially in the X Direction, so it can go much faster without vibration
  • Much less calibration and jigging required; all of the right angles of the frame are enforced by the squareness of the sheets. The Y and Z bars are roughly aligned to the frame by the holes but the printed parts have slots to allow them to be set more accurately with a set square.
  • Can be drilled with a paper template to make sure all holes are perfect
  • Sheets are usually straighter and flatter than rods, as they are thicker and much wider
  • Everything is mounted on one of two planes, so it's all flat
  • Frame is held together throughout the machine, instead of just at the corners, so much less warping
  • Fewer vitamins
  • Open frame design, allowing it to be worked on easily and mostly disassembled without falling apart
  • Z axis motors are at the bottom, so that the couplings don't need to support the weight of the X axis
  • The Z couplings can be smaller, and therefore the Z smooth rods closer to the threaded rods, increasing stiffness
  • The center of balance is lower, making it more stable
  • Smaller volume of printed parts, so it can be printed easier and faster
  • Parts are ribbed to maintain strength and decrease print time
  • Ribbon cables are used to prevent cable tangling and friction
  • Rectangular, so it can be shipped and put in Heated Build Chambers easier.
  • Uses LM8UU bearings
  • Uses 10 instead of 12, so only one package is needed
  • Fewer bearings make it less susceptible to problems with overconstraint
  • Heavier and stiffer construction makes it more resistant to decalibration due to transportation.
  • Less need for adjustment
The Mendel90 is being designed solely by Nophead, and he has shared his design through his blog and Thingiverse. He has made one prototype, out of 12mm MDF and 10mm rods. It has a build area slightly larger than the Mendel (214x214x150), and he is working on another prototype of 6 and 10mm acrylic and 8mm rods, with the same build area as a Mendel. This design is the one that all the files released on Thingiverse belong to. Before Nophead released the STL files through Thingiverse, Stevetronics worked on making his own version from the pictures on Nophead's blog, first in Solidworks and then in OpenSCAD. AdrianKelly is working on making a wooden Repstrap based on the Mendel90. The source code and the latest STL files for both variants can be found at GitHub.


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