mcload
Hot Rolled
- Joined
- Nov 5, 2007
- Location
- Houston, Texas
Help crew; I hope all are well.
Getting close to finishing my 9B project lathe, or so I hope.
Finally got around to dealing with the cross-feeds; and have the two handles
buffed up and shiny. But looking at the cross-feed nut, it looks like
hammered dog-shite. There is also evidence that someone has been at the
adjustment screw itself in the past, I assume that with a bit of heat, I'll be able
to back it out along with the "pressure pin" (for lack of the correct term).
I have a new nut on order and I hope it makes any backlash it had to a tolerable
amount. (Sorry, I don't know how good or bad it was before disassembly. I guess I
could easily find out though). As far as I can tell, the ACME screw looks okay, but
I'm sure it is worn somewhat.
I'm really disappointed that the original 7/16-10 left-hand ACME thread has gone the way
of the Dodo bird and is no longer available (McMaster), otherwise I might be compelled
to replace the screw as well. (I read the other threads on this procedure and it seems
easy enough). For those shouting at me to make my own ACME thread, I must say
that I don't have the confidence in doing so, and would much rather purchase a piece
of alloy thread produced on a CNC machine. (Yes, regular pointy threads I can do).
There is a chap that is selling a kit containing the correct screw and nut (good for him),
but I didn't want to resort to that just yet. Thought I'd see what replacing the nut alone will do.
Was thinking of a version using ½-10 LH ACME, but that's probably just a rabbit hole
I should stay away from.
Cheers.
PMc
View attachment 310693 View attachment 310694
Getting close to finishing my 9B project lathe, or so I hope.
Finally got around to dealing with the cross-feeds; and have the two handles
buffed up and shiny. But looking at the cross-feed nut, it looks like
hammered dog-shite. There is also evidence that someone has been at the
adjustment screw itself in the past, I assume that with a bit of heat, I'll be able
to back it out along with the "pressure pin" (for lack of the correct term).
I have a new nut on order and I hope it makes any backlash it had to a tolerable
amount. (Sorry, I don't know how good or bad it was before disassembly. I guess I
could easily find out though). As far as I can tell, the ACME screw looks okay, but
I'm sure it is worn somewhat.
I'm really disappointed that the original 7/16-10 left-hand ACME thread has gone the way
of the Dodo bird and is no longer available (McMaster), otherwise I might be compelled
to replace the screw as well. (I read the other threads on this procedure and it seems
easy enough). For those shouting at me to make my own ACME thread, I must say
that I don't have the confidence in doing so, and would much rather purchase a piece
of alloy thread produced on a CNC machine. (Yes, regular pointy threads I can do).
There is a chap that is selling a kit containing the correct screw and nut (good for him),
but I didn't want to resort to that just yet. Thought I'd see what replacing the nut alone will do.
Was thinking of a version using ½-10 LH ACME, but that's probably just a rabbit hole
I should stay away from.
Cheers.
PMc
View attachment 310693 View attachment 310694