new drag bit design for veneer,plastics,cork,vinyl,etc

[stan kern]

I setup the new drag knife from donektools.com ,its 1/2 shank goes in the router
collet or spindle takes standard box knife blades this model the D2 will cut up to
1/4 materials.
Programmed the cut using aspire
and calling it a 1/64 end mill and ramping it in 1 inch for the cut
You can contact Sean Martin (smartin@donek.com) for more info or me

I am anxious to try more materials like vinyl or veneers or a heavier plastic

http://youtu.be/_AaJOuC0W2M

[stan kern]

the drag knife design is interesting as it has to be balanced in such a way that when the router/spindle moves the blade follows or it could snap off the end.
Because the blade is out aout 1/4 one should be able to cut 1/4 material.
There are probably some tricks in aspire to help this cutter do a better job
I would like to find some vinyl to cut letters from as cutiing vinyl with a laser produces bad gases,also cutting veneer will be interesting


http://youtu.be/J6csYqOMl_Y
ask sean martin if you spec questions smartin@donek.com

[james mcgrew]

I have one yet have yet to use it !!

[George Brown]

Would it not be easier to just build a stepper driven tangential knife (mach 3 I understand controls the turns) than to fiddle with the g-code each time?

[stan kern]

i didn't fiddle with any gcode I just ran it as a 1/64th end mill
but i huess one could do some special programming

[stan kern]

still doing all sorts of cuts with the donektools drag knife,this time
i tried corrugated plastic from home depot cork and black sign vinyl

http://youtu.be/x4WznSWsTyg using the drag knife to cut corrugated plastic

http://youtu.be/P77OStYXR7c using the drag knife toi cut cork and vinyl