Or you could just find a straight spindle so you can get to machining with the
machine instead of spending time machining to try and fix the machine. ;)
On Wednesday, September 12, 2018, 6:16:06 PM MDT, Gene Heskett
<[email protected]> wrote:
Greetings everybody;
When I was making the adaptation of the er-40 adapter, I first reground
the spindle bore to a short MT5 since it was bent and had about a 7 thou
peak to peak runout at its mouth. That runnout fix seems to be good yet
although its possible there is an error in the taper, thanks to the bed
wear. So I next made from an 8" rod of decent alu, and MT5 + threaded
spud for the drawbar to grab, all this working several inches away from
the spindle nose, and with the rod chucked in a 4 jaw, running within a
half thou of true. Turned it around and seated it in the spindle, then
cut the female of a 5C on the other end. So far, so good, everything
running about 1/4 thou of true. Bought an MT5 <-> 5C adapter from
Grizzly, set it on the end of my alu "jig" and trimmed it short for the
spindles 1/2 MT5 socket, even put a lock pin in it to lock the er-40 to
the 5C adapter. Today, I knocked it apart because I could slap the
er-40 about around by about 4 thou and cranking on the drawbar wheel
didn't help. The upshot is that I can seat the 5c adapter pretty snugly,
hit the front flange with a dead blow, and knock it sideways by that
same 4 thou.
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