Difference between revisions of "Workflow"
(→Run the Job)
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There are many programs for this, and as noted on the [[
There are many programs for this, and as noted on the [] page, one can use any tool capable of creating vector descriptions, or hand-code [[G-Code]] oneself.
=== List of CAD Tutorials===
=== List of CAD Tutorials===
Revision as of 09:51, 27 January 2015
This is a compleat overview of running a job from beginning to end, w/ links to appropriate pages.
Design the part
Cocktail napkin sketches aside, this requires that one draw or code the part(s) up on a computer, either in a CAD program, or directly in a CAM program which has drawing facilities, or directly in G-Code. See Designing for Fabrication for further considerations.
List of end-to-end tutorials
- Basic workflow 2D --- drawing a part in Inkscape, creating toolpaths with HeeksCNC, simulating toolpaths with OpenSCAM
- Basic workflow 3D --- glosses over drawing a part, but covers using HeeksCNC to create toolpaths, simulating with OpenSCAM
- User:BHSPitMonkey/Inkscape and Gcodetools Tutorial --- detailed, illustrated tutorial
- Tutorial CAD/CAM 3D Diamond-Circle-Square InkScape/MakerCAM --- drawing parts in Inkscape, setting up paths w/ MakerCAM
- Cutting Embossed name plate --- There is a video tutorial for this on the MakerCAM page
List of CAD Tutorials
This is more complex than the words, “Computer Aided Manufacturing” would suggest. The following aspects of a job must all be reconciled:
- Source file format (from the step above)
- Material selection
- End mill selection
- Offsets based on Endmill diameter and machine runout
- Feeds and speed
- Order of operations, direction of cut(s), point of origin and Z-value for each cut
Previewing (and optimizing) the Job
See the page Previewing G-Code for a list of programs for this. In some instances, it may be necessary to tweak the G-code commands --- some of the programs afford this capability. For batch changes, see grecode (listed on the Programmatic G-Code Generators page).
Run the Job
One will need to:
- check the machine
- mount the selected end mill
- place the material at an appropriate place on the work area in an appropriate orientation and secure it w/ an appropriate workholding technique
- zero the machine and move it to an appropriate starting position relative to the material. Techniques for this:
- placing a piece of paper at zero and jogging the machine down until it catches the paper
- drill bit --- use a drill bit or other cylinder of known diameter, jog the machine down and move it horizontally until it nudges the drill bit
- placing a conductor of known thickness at zero and clipping a wire for a light or other electronic device to the endmill (or other electronic device)
- using a corner block or center finder or other device