Very Nice!!  I am a "Roll your own" kinda guy, not trying to rip off your idea for my profit.
Do you have a link for the "blanks" (Chinese) that your using, and where do you get your other part blanks like what you use
to make the collar? (and any other stock parts). Do you "Press on" your collars? I like the 20mm idea.

Again, thanks for your time and willingness to share!

Scott

http://www.ebay.co.uk/itm/Precision-C20-ER25-50L-Straight-Shank-collet-chuck-holder-20mm-diameter-tools-/161159455553?pt=LH_DefaultDomain_3&hash=item2585da2341

You can turn the tapers on with a carbide tip with these
 The collars are just parted off steel bar with grub screws or I heat shrink them on its best just to skim the collar on the spindle side after fitting to ensure they pull up true.
Tony

Nice!! I wonder if I can find that on the Ebay, in the US to avoid overseas shipping would I search: C20-ER50L straight shank collet holders, or, are they called something else?

I dont know of anything else there called