This is my take on a Prusa I3, with a cnc mill friendly frame. MP3DP- Milled/Printed 3D Printer. I am sorry the parts are not interchangeable with the original Prusa parts.
Questions comments – Link
This uses common 3D printer parts, hardware, milled parts, and printed pieces.
Material should be under 7.2mm thick, thicker and you will need longer hardware and might lose some Y travel. All radii and holes are 1/8″ or larger, so use end mills 1/8″ or smaller.
|XY_Frame||2||(M)Front and Back|
(M) Mirror one of these parts if you have a single sided material.
These .DXF’s are in millimeters.
I used 20% infill and 3 perimeters for all parts, very forgiving. No support needed!
.STL’s available here, http://www.thingiverse.com/thing:1524754
4/27/2016- updated the mk extruder mount file, released to thingiverse
You can use any hardware/components you want, below are just suggestions. Affiliate links should help so I don’t have to put a description for each part.
|12v 30A & cord||1||http://amzn.to/1MRAu6i|
|Ramps 1.4 w/ 4 drivers||1||Shop|
|Print Fan/Ramps fan||1/2||Shop|
|lm8uu||10||http://amzn.to/1pJdJMu or Shop|
|Glass||1||http://amzn.to/1Us8JsL not needed with an MK3|
|MK2 Bed/thermistor||1||http://amzn.to/1UTCHG2 or mk3 Shop|
|Coupler 5mm to 8mm||2||http://amzn.to/1Us926Q or Shop|
|leadscrew/nut 300mm||2||http://amzn.to/1Us99j0 or Shop|
|Y-Rod 8x350mm||2||http://amzn.to/1Us9eDp or Shop|
|Z_Rod 8x320mm||2||same as above|
|X_Rod 8x370mm||2||same as above|
|roller limit switch||3||Shop|
|NEMA 17 Stepper Motor||4||http://amzn.to/1UTDCq7|
|*6-32 x 2.25||1||For Z end stop|
|*6-32 x 1||6||For bearings, bed, x end stop|
|*6-32 x .75||45|
|*6/32 Lock nut||50|
|M2.5 x 10 / cable ties||6||For end stops, I use small cable ties.|
|M3 x 10||16||For Steppers|
*#6 hardware can be metric equivalent M3.5
You will also need some extra wire for the power supply, end stops, and fans.
1/25/17 updated to the RC8 BF, much better response from the LCD and included Jeffeb3’s lcd knob settings. If you have any issues please just switch back the the previous firmware and let me know. I have had no issues with it.
16t pulleys, 32nd stepping, 8mm lead screws, full graphic LCD. Check your z axis after flashing some lead screws actually need 788 instead of 800 steps per mm in the firmware.
12/11/16 updated to marlin RC8
7/9/16 – Updated to Marlin RC1.06, tweaked the accelerations.
4/27/16 – initial release nothing beyond basic tuning, works great
More to come