this is what I made up , its spring loaded
works fine
pencil
sharpie
Using a pen as tool
- highpockets
- Vectric Wizard
- Posts: 3667
- Joined: Tue Jan 06, 2015 4:04 pm
- Model of CNC Machine: PDJ Pilot Pro
Re: Using a pen as tool
Well done!!! Looks like a really good design and simple.
John
Maker of Chips
Maker of Chips
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- Vectric Wizard
- Posts: 1479
- Joined: Sun Nov 28, 2010 5:10 pm
- Model of CNC Machine: Home built designs - 3'x4' and 5'x12'
- Location: Eastern NC, USA
Re: Using a pen as tool
There is no real requirement to mount the spring loaded pen or pencil into the collet and worry about the router/spindle rpm or mechanical rotation. I made one for one of my early machine builds that was a brass tube with a spring loaded BIC ballpoint pen inside. The tube was mounted to a scrap wood block that was C-clamped to the router mount in front of the router. x-y zero the pen at the x-y starting point and set the pen a little below the surface to pre-load the pen and it worked fine. Keep the length of the protruding pen/tube reasonably short so that it doesn't flex and you will get accurate drawings. Slop in the pen can be due to too loose of a fit inside the tube. Too snug and it will not follow any minor unevenness in the surface. Be aware that if the drawing is too close to one of your travel limits it may crash if you don't have limit switches. The router/spindle collet is offset from the pen location by a few inches and as long as that is acceptable, there won't be a crash.
CarveOne
CarveOne
CarveOne
http://www.carveonecncwoodcraft.com
http://www.carveonecncwoodcraft.com
- Mike-S
- Vectric Wizard
- Posts: 1123
- Joined: Mon Jun 13, 2011 6:45 am
- Model of CNC Machine: Joe's Hybrid 4x4 (but 3x3)
- Location: Hayesville, NC
Re: Using a pen as tool
I added an extra bracket for the pen on my diamond scribe arm.
The arm snaps onto the router where the dust shoe normally sits and no need to remove the router bit.
The arm snaps onto the router where the dust shoe normally sits and no need to remove the router bit.