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Descrição
This is my second printer design and is based on my first printer the OB1 with a reengineered top end. The 1.4 features greatly increased build height and now has a massive build volume of 200mm x 200mm x 200mm (8" x 8" x 8") with an open front design yet is still 100% printable on an existing reprap printer.
The aim here was to make a larger volume printer that did not need specialist parts, laser cutting or CNC machinery to make. The 1.4 designation comes from the new side frames resembling the number '4'.
If you have already built the earlier OB1 printer you can reuse a lot of the original plastic parts as well as all of the extrusions although this new printer uses less extrusion and some will require shortening.
The x-axis ends and carriage are now included but have not yet been tested hence the "work in progress" label.
I may yet design a standard x-carriage to take a Wades type extruder but if anyone else wants to have a go the X-axis rails are 55mm spacing 8mm diameter linear rods.
Instruções
Build trays here: http://www.thingiverse.com/thing:51593
Full assemble instructions are available on YouTube here: Part 1: http://youtu.be/WR5EMgwua-Q Part 2: http://youtu.be/PiuRKRwRDCY Part 3: http://youtu.be/vGVZhLTLnB4 part 4: http://youtu.be/4_iULqEEOrE
(Full BOM is included in the file list in excel and tab-delimited formats)
Open beam extrusions required: 1 x top rail 420 mm long 8 x front/rear/side and upright rails 330mm each 2 x diagonal rails 297mm each
These can be cut from 4 x 1m lengths of Open Beam extrusion. Mitre-box here: thingiverse.com/thing:32668
Linear rods: X-axis 8mm x 450-500mm long Y-axis 8mm x 390mm long Z-axis 10mm x 450-500mm long
Hardware: 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
I have also included the drawing of the 5mm aluminium plate I recommend you use for the y-carriage along with the y-carriage design OB14Y1 included here plus these bed adjusters: http://www.thingiverse.com/thing:29782
You will also need an extruder, I am using my small footprint extruder from here: http://www.thingiverse.com/thing:30951 as a pusher.
If you use the build trays from here: http://www.thingiverse.com/thing:51593 they include the pusher and extruder parts in the trays as well as the y-carriage.
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