Got it for $100 to avoid screwing up on another $100 chunk of steel for a backing plateQuite an expensive tap there! Nice.
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Try putting an indicator on the carriage against the cross slide and watch it as it starts the cut.Nice. Pretty well for old American iron!
And here at my day job, I’m fighting .001- .003” taper in 3-4 inches on my 2015 Summit Lathe. I’m getting better at tapping the cross slide with a block of aluminum as it’s going and getting most of the taper out, especially when I’m doing more critical bearing fits on shafts.
Sometimes you just have to learn the machine’s capabilities and work within them.
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If you can turn between centers you can eliminate that easily.Nice. Pretty well for old American iron!
And here at my day job, I’m fighting .001- .003” taper in 3-4 inches on my 2015 Summit Lathe. I’m getting better at tapping the cross slide with a block of aluminum as it’s going and getting most of the taper out, especially when I’m doing more critical bearing fits on shafts.
Sometimes you just have to learn the machine’s capabilities and work within them.
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If you asked me if this could happen I would not have believed it....
I shimmed the tailstock with two sizeable pieces of 0.010" brass shim. The height is within 0.0015"
Then I checked the parallelism of the tailstock ram. Along the top and side we are right at 0.001" of parallel running a dial indicator along its length locked down tight.
Then I started turning a test bar. I cut the full length so I could check along the length for variation.
I got it within 0.0005" in 12". The best part is that the variation is linear! Next weekend I'll work on getting out the last half thou, although it is plenty close enough for most of my work.
With the significant amount of bed wear, a foot of straight shaft has me tickled pink. I rarely ever do long cuts.
She is a noisy old girl in her highest gear. 510 rpm. I'm starting to fall in love with the old girl.
I actually fixed all the loose bushings in the feed gears under the end cover, but I'm getting noise from the head stock and feed gearbox too.If you can turn between centers you can eliminate that easily.
The hard part is resetting the tailstock to zero afterwards.
Being limited to 510rpm kinda sucks, but if its anyconcellation,consteneration........, if it makes you feel any better about it. these lathes sounded like this when they were new.
All straight cut gears and loose tolerances (By todays standards) were common being the money was spent on the bed and the ways.
You may be able to tame some of that by looking at the change gear bushings and backlash. Setting the backlash and getting them to run quiet is a chore if the bushings are worn.
My old 9" atlas used to sing in high gear....