Ed Okerson wrote:
>
> I used rubber hose, actually vacuum line from the auto parts store. Clamp
> it on the shaft and threaded rod with hose clamps. With that setup
> alignment of the motor to the rod is not that critical.
>
> Ed
>
Yep that works well too, but takes another bearing at the motor end. Once I
got good enough at how to get things to align properly, I just let the motor
shaft be the other alignment point.
And either drill a point hole for the set screw, or tighten it really tight
to cut its sharp edge into the metal. Either way get the screw in tight, then
back it out just a little on one side of the coupler and loctite it. That will
give it just a little bit of wiggle room while still keeping things locked together.
Really the hose works fine and is a bit easier, but you must have the ball
bearing. Hard to find not rolled hose, so even a short piece will be trying to
put an angle at the shaft to rod connection. Takes very little of that to bind
things when you have a nut traveling on the rod.
Also forgot to mention that the tool is the $18 or so Handi from wall mart.
Very smooth, I like it better than my dremel. But dremel has quite a few newer
models now, so maybe some are better.
NIB magnets with silicone or plastidip around them make excellent temp hold
downs too, put screws or other magnets into the board to hold things down.
Clamps work too but the magnets can do the job and don't get in the way as much
as the clamps.
Alan