Stock Pivot Plate
Note
'Needs the Stock Pivot Plate Sketchup with 3" hole, which is the hole after the precision tubing has been welded in. Further, 6 in 60 Buildout testing has shown that the stock pivot plates need to be 1/4" shorter at the rounded part because of conflicts when 2 of these plates are put together from opposite sides in joints. To address this, please generate a stock plate where the half circle begins 1/4" further away from the rounded edge, so that the overall plate is not 16" long, but 15-3/4" long. Leave the curvature identical, just move it 1/4" inch away from edge.
Full Size Design Files, Sketchup
- Realistic Design File: Needs 3" hole for exactly how 3" shaft will fit. Lengh of 15.75" as disussed above. - SKP: File:Pivplate1575-3.skp
Full Size Files for CNC Cutting (Acetylene Torch, Laser, Plasma)
- SKP Design File for Generating CNC Torch/Plasma Cutting Files: Same as above except the hole accommodates a piece of precision tubing with 0.5" wall - so it is 4-3/16" diameter to allow 3/32" welding gap. This kind of spacing has been tested with laser cut metal. - File:Pivplate1575-4.skp
- DXF CNC Cutting File - same as above, but exported to DXF. - File:Pivplate1575-4.dxf
Scale Model 3D Printing Files
- Design File for 3D printing - Same as Realistic Design File except at 1/8 scale, so plate is 1" wide and ~2" long in this case. - File:Pivplatescaled-3.skp
- STL File for 3D printing - same as above, exported to STL - File:Pivplatescaled-3.stl
- Fixed STL File for 3D Print - see STL File Fixing for how to process an STL file to prepare it for printing - File:Pivplatescaled-3f.stl
Laser Cutting
For Laser Cutting out of stiff construction paper at 1/8 scale - we need to start with a scale model in Sketchup, corresponding to Design File for 3D Printing. Take the component to be printed. In order to generate a flat structure, the DXF can be generated directly from this SKP file.
- Laser Cutting File - DXF generated from SKP Design File for 3D Printing: File:Pivplate1575-laser-4.skp
Placeholder for 1/4" shorter pivot plate with 4.875" hole (best for welding) - DXF: File:Pivplate1575-48.skp
Notes
This is an official file release with dimensions. Current as of May 17, 2013. Newer versions will be uploaded here.
We can then print these out according to the Ultimaker Post on Using Sketchup for 3D Printing.
Older Version
DXF file - File:Stockpivot.dxf
Note: the correct large hole diameter in the above is 4.75", which gives 1/8" room around the DOM for effective welding.
Note: the above is used to generate a CAM file for CNC Torch Table cutting and Laser Cutter modeling - for the pivot plate. In practice, a 4.5" OD DOM with 3" ID is welded inside the 4.75"-4.875" hole (Mickey Mouse hole) to generate a pivot plate for a 3" shaft. To generate a CAM file for 3D printing, one must consider the 3" tubing and print out a 3" hole, not a 4.75"-4.875" hole. 4.75" is recommended as a hole for CNC cutting (leaves exactly 1/8" space around DOM for welding) - and a 4.875" hole is recommended for manual cutting to address inaccuracies.
- File:Stock Pivot Plate.skp
- File:Stock Bonding Plate 8 inches x 16 inches.skp
- File:Stock Spacer Plate 8 inches x 8 inches.skp