Had this for a couple weeks and finally got around to putting it to the test.
Impressive, I think they should be in everyones bit arsenal. Easy setup, I just put the paper on a .25 mdf square I had laying around and taped the paper to it, no need to even screw down the board.
Of course if I did this alot I would rig up something better, but my point is at its root it is very simple to use using materials at hand with any profile toolpath.
[You can see on the 2nd pic I had some dragging issues, probably need to set Z to retract a little higher, I had it at only .10 to save time, .15 I bet would cure that problem] Or, perhaps the paper was rising at that one point, really didn't have it secured very good.
I got this one here from a fellow CNC'erhttp://cosmos-industrial.com/index.php? ... ex&cPath=3
Also another guy on this forum with another nice model, don't have the link offhand but searching "plotter pen" should find it.
Well worth the small investment, opens up another area of creativity.