So Friday I received my brand new G0761, a couple days before I received the G7156 4" "premium milling vise" and T25937 5" Rotary table/indexing head.
I spent last Saturday building the stand, and was able to get it moved into its resting spot, stand painted, and mill mounted. Sunday I did the break in, and changed the oil, and started tramming the head. The left to right I was able to adjust. I used my indicator setup, 4" out away from spindle, so about a 8" circle. The front to rear which there is no adjustment is about .009" out over the 8" swing, my math says its .057 degrees off, essentially 3 minutes and a few seconds off.
I've seen the video of using epoxy and copper wire to tram the head in to zero. Here is what I think I may try, I have an assortment of shim stock, I will shim it till it measures correctly. See if .006" on one side will zero everything out. If that will, I'll take a piece of 1/4" plate steel and either mill, or mill and grind a tapered shim plate to put in between column and base. Should work I think, and I have plenty of 1/4" plate around for this project.
pictures up shortly,
I spent last Saturday building the stand, and was able to get it moved into its resting spot, stand painted, and mill mounted. Sunday I did the break in, and changed the oil, and started tramming the head. The left to right I was able to adjust. I used my indicator setup, 4" out away from spindle, so about a 8" circle. The front to rear which there is no adjustment is about .009" out over the 8" swing, my math says its .057 degrees off, essentially 3 minutes and a few seconds off.
I've seen the video of using epoxy and copper wire to tram the head in to zero. Here is what I think I may try, I have an assortment of shim stock, I will shim it till it measures correctly. See if .006" on one side will zero everything out. If that will, I'll take a piece of 1/4" plate steel and either mill, or mill and grind a tapered shim plate to put in between column and base. Should work I think, and I have plenty of 1/4" plate around for this project.
pictures up shortly,