Digitizing arm?

I was wondering if anyone here is working on a digitizing arm. I have
read a few sites and I would like to build one. One of the reason is I
need a 6 foot working space. I have looked at the Microscribe
<http://www.immersion.com/digitizer/> arm but the Microscribe has to
small working area. I will only need a .1 accuracy if that. I have also
thought about laser scanning. I picked up 6 Hengstler RI 58
<http://www.hengstler.com/gfx/file/shop/encoder/install/2-531-069_Kurzin\
stallationsanleitung_E_RI58-D_TD.pdf> encoders that may not be workable
for this project.



I join this forum as one of the sites " LINK "
<http://www.indoor.flyer.co.uk/digiarm.htm> I found talk about
modifying a DRO program. Im hoping that someone is willing to help me
along with this. I just need to be pointed in the right direction and
hate to reinvent the wheel.





Thanks



Tek



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