Recent posts
- threading 16tpi, half nuts sound wrong at the end
If it only happens at the end, look at half-nut engagement before you open the gearbox. Wear shows up when the load spikes. No groove means…
- atlas half nut won't stay engaged
Soft cam is usually a worn shoe or the detent, not the half nut threads themselves. If holding it with your thumb makes a good thread, the…
- tailstock die holder, the thread starts drunk
Loosened the ram clamp a touch and put a real chamfer on, not the one I deburred with a file. Thread starts straight. The holder wasn't the…
- tailstock die holder, the thread starts drunk
Ran a 3/8-16 die from the tailstock so it would start straight. It started crooked anyway. The die is in a holder I bored. The holder fits…
- micrometer collar slips on the cross slide screw
The flat on the sleeve is gone, so the set screw is tightening against a round and hoping. File a small flat. Then the screw has a place to…
- carriage handwheel freewheels one direction
They slip. The key is a short piece of stock someone filed 'close enough,' and close enough was one direction. Made a key that actually fil…
- carriage handwheel freewheels one direction
Handwheel on the carriage drives left like a lathe and right like a suggestion. Gear looks meshed. Key is in the shaft. I don't see a missi…
- nameplate says 1947, the gearbox does not agree
Serial on the bed is there, under green paint that was not South Bend green. Bed is '46 or '47. Gearbox is a '50s replacement, best I can t…
- nameplate says 1947, the gearbox does not agree
Plate on the bed says South Bend, 1947, 9 inch. The gearbox has a later plate style and one screw that is not like the others. Previous own…
- knurl crushed the diameter, now the fit is a memory
Turned it off. Started at 0.742. Peaks landed near 0.751. Bore is happier than I am. Writing the 0.742 in the book so I don't get to learn…
- knurl crushed the diameter, now the fit is a memory
Wanted a 0.750 grip. Knurled it. It's 0.762 over the tops and the bore it goes in doesn't care about my intentions. Medium diamond, one pas…
- backgear engages like it's optional
Pin is short and the hole is fine. Made a longer one out of a dowel pin I had. It engages. It also reminds me I avoided the obvious for a w…