R3DWOOD OB1 Prism
by Wired1, published
New printer based on the Mendel Max and the Prism style printers but constructed from Open Beam 15 x 15 aluminium extrusion.
Designed for a 200 x 200 x 125 print area.
Open Beam Prism blog: http://nzec.co.nz/r3dwood/
3D printer movies: youtube.com/user/wiredkiwi
Printer webcam (whenever printing): tinyurl.com/97uglwz
It really is as easy to assemble as it looks. The main challenge you will face is pre-installing enough 3mm nuts in the extrusion before you put it together as they cannot be added after unless you take an end off - just refer to the photos here and my build blog http://www.nzec.co.nz/r3dwood/.
Open beam extrusions required:
2 x top rails 442 mm each
4 x front/rear rails 330mm each
2 x side rails 330mm each
4 x diagonals 330mm each or 330 + 30 degree mitre (refer to the blog).
These can be cut from 5 x 1m lengths of Open Beam extrusion.
Mitre-box here: http://www.thingiverse.com/thing:32668
X-axis 8mm x 450mm long
Y-axis 8mm x 390mm long
Z-axis 10mm x 400mm long
4 x 10mm LM10UU bearings
8 x 8mm LM8UU bearings
2 x 608 bearings
80 x M3 x 8mm hex socket machine screws
10 x M3 x 10mm hex socket machine screws
80 x 3mm washers
80 x M3 nuts
For the first one of these I built I used GT2-3 timing belt which has a 3mm pitch plus printable 23 tooth pulleys for Y and X axes. If you are using GT2-3 belt use the GT2-3 clamps and pulleys. For the second printer I built I used T2.5 belt and have added the pulley (25T T2.5.stl) and clamps (T2.5 clampPair.stl).
I have also used TommyC's revised Kuhling's X-ends http://www.thingiverse.com/thing:21122
plus my X-carriage http://www.thingiverse.com/thing:31322 and quick release extruder http://www.thingiverse.com/thing:30951.
This is now a working printer running marlin with SD card support on an Azteeg X3 controller.
I have also modified the corner plates to take straight cut extrusion and these are the two files CornerPlateL3.stl and CornerPlateR3.stl files. With these corner plates you cut all ten extrusions straight at 330mm plus the top two rails at 442mm each.
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R3DWOOD OB1 Prism by Wired1 is licensed under the Creative Commons - Attribution - Non-Commercial license.
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