> I've got the 750 because I want to be able to sharpen some very large
> bits I have. Don't need it often, but when I do...
Might be worth mentioning that the 400 & 500 can also do up to 3/4" bits, with
the optional larger chuck. It's tough to find this info on their website, but
it's there.
http://www.drilldoctor.com/store/product_info.php?cPath=48_32&products_id=38
Of course the 500 + extra chuck costs about the same as the 750 (which oddly
enough is just a 500 with an extra chuck); but if you're short on cash you could
buy the 500 now & the chuck later.
Randall
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