Comments to Machinist
Comments to Machinist (CTM) are text and lines used to communicate special instructions to the machinist. You can use Comments To Machinist to specify 3D shapes not yet supported by the CAD software. For example, see the red lines below:
Following are some uses for Comments To Machinist:
- Holes and other features at angles other than 90 deg. Draw the feature in a head-on and a side view (as in the example above) referring to each other with text such as "See B in Left view".
- Countersinking for 2D parts (for 3D parts see
Designing 3D
parts)
- Chamfered or rounded edges applied to only part of a contour
- Omission of a groove or edge effect at a certain location
- Features that require four axis milling
Use CAD features to accomplish shapes whenever possible before using Comments
to Machinist.
Also see
Comments to machinist.
