DMF_TomB
Diamond
- Joined
- Dec 13, 2008
- Location
- Rochester, NY, USA
measured and made 3D model of a plotter pen for HP plotters. a Koh-I-Noor_6401.01F
Plotter Pen 0.3mm
basically it is a short fiber tipped marker that can be used on a CNC mill to draw on the part the tool path. on hot rolled steel white shellac alcohol based can be used as machinist bluing so black lines show better.
i got a package of 5 for $30. a regular sharpie type marker bends too much. by using a plotter pen that about an 1" long (0.450"dia) held in a drill chuck it is much more rigid. should not be hard to make a spring loaded holder but i have found it works ok for flat parts using nothing more than just the plotter pen.
of course the plotter pen is about 0.3mm wide when new so it is only showing the center of the tool , tool path. by making parallel lines close together is how a plotter makes wider lines.
it would be interesting to try a paint marker to see if a cnc mill can be used to paint a metal sign.
Plotter Pen 0.3mm
basically it is a short fiber tipped marker that can be used on a CNC mill to draw on the part the tool path. on hot rolled steel white shellac alcohol based can be used as machinist bluing so black lines show better.
i got a package of 5 for $30. a regular sharpie type marker bends too much. by using a plotter pen that about an 1" long (0.450"dia) held in a drill chuck it is much more rigid. should not be hard to make a spring loaded holder but i have found it works ok for flat parts using nothing more than just the plotter pen.
of course the plotter pen is about 0.3mm wide when new so it is only showing the center of the tool , tool path. by making parallel lines close together is how a plotter makes wider lines.
it would be interesting to try a paint marker to see if a cnc mill can be used to paint a metal sign.