محول، من محور 3" إلى مشبك مخارط 4"

The flange side bolted up to my lathe dead true, so all I had to do was skim the chuck side to fit my 4" chuck. Took maybe twenty minutes of facing and it runs with barely any runout now.

Wasn't sure about buying a semi-machined plate, but the flange side bolted right up with zero runout. You do need to face the chuck side yourself, which took me about an hour on the mill, but once done it runs true. Solid casting, no surprises.

The fully machined flange side bolted right up to my spindle with zero runout, so I only had to skim the chuck side true once it was mounted. Nice that they left that face oversize for dialing in your own register. Fits my 4" chuck perfectly.