I recently acquired a Rockwell/Delta Toolmaker grinder. It was part of a bigger tool gloat that I may post more about later. Suffice it to say that I had on my someday list to own a small (my shop is way over crowded now) surface grinder as it and a few fixtures seemed like a more universal way to deal with sharpening cutters than a dedicated cutter grinder. This thing is not really a surface grinder per-say, but will probably perform that function adequately for my purposes. It has 6x12" travel.
It came with most of the cool accessories including the Univise (for grinding single point lathe cutters etc) and the Unihead with indexing collars. This is a universally adjustable rotating grinding/indexing head...and I should be really grateful. However, it takes Brown and Sharpe #9 taper collets which I don't have and which are not very universal today. Fixing the grinder is a someday project, so I am in no hurry, but generally find that it is wise to start looking for the pieces you need for a project and do the in-head engineering in advance of being ready to start work.
My thinking is that maybe the brightest idea would be to look for a collet holder for some other sort of small collet (perhaps one of the double-angle types) and turn the shank down to fit the B&S taper...making my investment in collets I don't currently own, a little more universal. Another collet holder like this could go in the lathe chuck etc. That has the downside of having tool shanks stick out further when grinding which would not be as rigid...and takes some work, but leaves things intact.
Plan B is to disassemble the thing and figure out if I could make a replacement spindle that would handle 5c collets or something of the sort. This would mean an even more useful set of collets. That requires quite a bit of accuracy as a milling cutter with even minimal runout will tend to cut with one flute. The current "spindle" appears to be precision ground.
Plan C is the obvious one....just save my pennies and buy a set of B&S 9 collets that will not get used for anything else.
I am posting here for opinions as I am sure someone will set me straight