- Joined
- Apr 21, 2013
- Messages
- 208
Richard,
Thanks again for your help. In the end, I want a machine that I can trust to be fairly precise. Not planning on making any replacement parts for Boeing, but I can't live with the slop I have now either. A 75% improvement would be great.
I located the table in the mid position of x and y this morning and did a few measurement to explain the slop I have. (this is with the gibs as tight as I can adjust them) With a dial indicator on the end of the table, I can pull and push the end of the table .040" (horizontally, front to back). If I lock x and y, it's around .002" movement. If I only lock the y, the table has about .009 of movement. If I move the table to the front of the knee, and lock the x, there is about .005 movement.
Concerning the knee gib. When I was trying to figure this out on my own a few weeks ago, I had noticed that the gib was pushing the rear wiper out of position. My solution was to shorted the gib by 1/4", but of course, this didn't help my situation. I also had suspicion that the gib tightening bolt was bottoming out and not pulling the gib tightly, so I removed 1/8" from it, which didn't help either. Sure seems like no matter how tight I can turn the adjusting screw, it's not pulling the gib as tight as it should.
I paid $1700 for the machine, and got a few accessories with it.
Here are a few photos that I took this morning. I probably have double the expense in camera equipment than I do in my mill and lathe, and the camera hobby is what I use to pay for the metalworking equipment. (for some reason, by wife doesn't think I need another hobby???) If you want any photos of other locations, let me know.
P.S. The hand-wheels were purchased from an EBay seller and were the best thing I added to the mill (so far).
Jack
Fort Loramie, Ohio
Thanks again for your help. In the end, I want a machine that I can trust to be fairly precise. Not planning on making any replacement parts for Boeing, but I can't live with the slop I have now either. A 75% improvement would be great.
I located the table in the mid position of x and y this morning and did a few measurement to explain the slop I have. (this is with the gibs as tight as I can adjust them) With a dial indicator on the end of the table, I can pull and push the end of the table .040" (horizontally, front to back). If I lock x and y, it's around .002" movement. If I only lock the y, the table has about .009 of movement. If I move the table to the front of the knee, and lock the x, there is about .005 movement.
Concerning the knee gib. When I was trying to figure this out on my own a few weeks ago, I had noticed that the gib was pushing the rear wiper out of position. My solution was to shorted the gib by 1/4", but of course, this didn't help my situation. I also had suspicion that the gib tightening bolt was bottoming out and not pulling the gib tightly, so I removed 1/8" from it, which didn't help either. Sure seems like no matter how tight I can turn the adjusting screw, it's not pulling the gib as tight as it should.
I paid $1700 for the machine, and got a few accessories with it.
Here are a few photos that I took this morning. I probably have double the expense in camera equipment than I do in my mill and lathe, and the camera hobby is what I use to pay for the metalworking equipment. (for some reason, by wife doesn't think I need another hobby???) If you want any photos of other locations, let me know.
P.S. The hand-wheels were purchased from an EBay seller and were the best thing I added to the mill (so far).
Jack
Fort Loramie, Ohio