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Recent content by neanderthal mach
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Dial indicator disassembly
Fwiw and since the plastic crystal seems intact, then I'm leaning towards that indicator being dropped on something hard enough to bend that needle. As an example, I dropped my then almost new 12" Mit. dial calipers just once on a clean wooden floor from bench top height. How it did all the...- neanderthal mach
- Post #2
- Forum: Metrology
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Jammed half nut cam lever
My best guess about why all the usual off the shelf screwdriver tips are tapered is there easier, faster and cheaper for the manufacturers to produce in volume and the taper would at least fit a wider variety of slot sizes to the buyers thinking probably. Plus for a whole lot of screw slots, it...- neanderthal mach
- Post #12
- Forum: South Bend Lathes
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threading dial
The threading dial pivots either into or away from the threads on the lead screw, so as already mentioned, only the single bolt is really needed. But if you don't already know? It's a poor habit to bottom out any gear to a zero clearance condition. That increases wear on both the gear teeth and...- neanderthal mach
- Post #4
- Forum: South Bend Lathes
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What is the key to finding a replacement key for a Yakawi 3 mm drill chuck?
If the key or one of your keys gear profile matches the tooth spacing and gear profile at the correct C/L distance from the gear on the chuck, you might be forced into either turning the pin down or removing it and then boring for your own pin size to fit what's there. Please let my know what...- neanderthal mach
- Post #23
- Forum: General
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StanF South Bend 9A Rebuild Thread
Mistakes can get missed by any businesses QC checks, but it's probably safe to assume your tail stocks Morse Taper would be concentric to the OD of the quill. Once your lathe is back to being operational, accurately mike that quills OD, then turn and face any piece of short scrap held in the...- neanderthal mach
- Post #122
- Forum: South Bend Lathes
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Sources for Connelly's book????
An old thread, but I'd mostly agree with a lot of the comments about the Connelly book. Pretty dry reading and fairly repetitive. But afaik and for anything written in English, there's only widely scattered and limited bit's and pieces available from other sources. Those I think are good...- neanderthal mach
- Post #36
- Forum: General - Archive
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StanF South Bend 9A Rebuild Thread
.020" droop? That would be a massive amount of wear. How did you measure that? If you swung an indicator tip inside the tail stocks MT and using the head stock to rotate it, those numbers won't even be close to correct. The reason I ask is because I got fooled by that method myself for a few...- neanderthal mach
- Post #119
- Forum: South Bend Lathes
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StanF South Bend 9A Rebuild Thread
A piss poor paint job on that heavy 10. Somebody flipping it is my guess. Poor prep, painted parts that shouldn't be are all instant warnings to me. What else are they trying to hide or gloss over. Was it a rusted boat anchor and they made it look a bit better with abrasives etc on the ways...- neanderthal mach
- Post #112
- Forum: South Bend Lathes
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Why is HSS tool set above center
I'd agree, plus the carbide grain structure seems to be much better or lets say more predictable as the production processes got better. That and better binding agents and probably better controlled results as we learned and understood more. But I don't really know much about carbide, so my best...- neanderthal mach
- Post #34
- Forum: South Bend Lathes
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Why is HSS tool set above center
Yeah I guess it is MB. I still like Montana better. Nicer scenery, cleaner, better roads and even less people. 😀 And not to throw this thread OT, but a total tooling and machine tool desert where I am. And the main tool supplier here in Canaduh would be KBC Tools. There prices bear zero...- neanderthal mach
- Post #32
- Forum: South Bend Lathes
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Why is HSS tool set above center
And my thanks about the additional information about carbide and that link. That's something new to me for sure. I did get curious and checked a few of my older machinist reference books. One that's fairly basic was written by Fred Colvin in 1941 titled Running an Engine Lathe does mention very...- neanderthal mach
- Post #30
- Forum: South Bend Lathes
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No problem, I just thought the book was worth a mention because it's published in the UK and not...
No problem, I just thought the book was worth a mention because it's published in the UK and not many know of it.- neanderthal mach
- Profile post comment
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How did you do this?
Your title needs to be descriptive for what the thread is about. The process is called rotary broaching. Lot's of videos and web information about how it works.- neanderthal mach
- Post #2
- Forum: General
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What is this profile called and where might I get it?
It would depend on your application, mechanical strength, environment etc. Cutting the radius a bit oversize and then using a mask on the pipe and pouring epoxy in with possibly damns around the perimeter to keep the epoxy in place could work? Any excess epoxy can be cut or sanded off for...- neanderthal mach
- Post #6
- Forum: General
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Vacuoline 1405 source in the UK?
Where you are, Shell or BP are probably the two most common. Fwiw, I've had pretty good luck telephoning and not emailing. Large oil companies all have on staff application experts with huge files to cross reference lube products that are no longer made to a more modern and compatible off the...- neanderthal mach
- Post #4
- Forum: General