Search found 19815 matches
- Tue Feb 20, 2024 2:26 am
- Forum: General Discussion
- Topic: End mill dish angle?
- Replies: 4
- Views: 388
Re: End mill dish angle?
Although considering the time spent dealing with it, it's probably better to just toss the dull ones and buy new. But then, I'm a genetic tightwad. Depends. It's not always about money, and I'm no different than you are. I don't spend unnecessarily. Back to the point---it's very nice to have the ab...
- Mon Feb 19, 2024 4:19 pm
- Forum: Lathes
- Topic: New Knurling tool
- Replies: 17
- Views: 1382
Re: New Knurling tool
Nice looking knurling tool, Kelly.
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- Mon Feb 19, 2024 4:18 am
- Forum: General Discussion
- Topic: End mill dish angle?
- Replies: 4
- Views: 388
Re: End mill dish angle?
45' (minutes) is adequate, assuming the end has been gashed and ground properly. It ensures that the flat area (formed by the gash) doesn't protrude (towards the material being machined) beyond the tips of the cutting edge, which would leave a slightly recessed center to the cut. Said another way, i...
- Fri Feb 16, 2024 4:55 pm
- Forum: Buy, Sell, Trade, Wanted, Free!
- Topic: Tools for sale
- Replies: 3
- Views: 338
Re: Tools for sale
As a moderator I am unaware of any restrictions on where one's first post may be placed. It isn't uncommon for a new reader to join the board strictly with the idea in mind of liquidating tools that are no longer needed or were inherited. Once gone, there would be no further offerings, unlike folks ...
- Thu Feb 15, 2024 4:07 am
- Forum: Lathes
- Topic: Left handed lathe, for lack of a better name
- Replies: 31
- Views: 1374
Re: Left handed lathe, for lack of a better name
I recently worked on a good sized Harrison lathe, it and its sister lathe were both ordered new in 1978. For some reason the then owner of this shop had one of the lathes built with the cross slide dial left of the carriage feed. That isn't all that uncommon. Many years ago I operated a 24"/48...
- Thu Feb 15, 2024 3:58 am
- Forum: Buy, Sell, Trade, Wanted, Free!
- Topic: SB chucks rotary table and misc.
- Replies: 12
- Views: 635
Re: SB chucks rotary table and misc.
At least one more (me) feels the same way about it. Out of curiosity I clicked the first link and found absolutely nothing that made sense. I closed the link and moved on to matters of more importance. I don't understand the appeal that Fakebook has for folks, and do not spend my time there as a res...
- Tue Feb 13, 2024 5:09 pm
- Forum: General Discussion
- Topic: Alloy similar to keys
- Replies: 13
- Views: 672
Re: Alloy similar to keys
If you intend to buy the material, you won't go wrong selecting phosphor bronze. It's a little tough to machine, but has excellent qualities. Strangely, if you make your choice leaded phosphor bronze, it goes from being a little tough to machine to being one of the best machining materials you'll ev...
- Tue Feb 13, 2024 1:19 am
- Forum: Build Log
- Topic: Northern 4-8-4 Build 3/4”
- Replies: 276
- Views: 62145
- Sun Feb 11, 2024 6:06 pm
- Forum: Milling Machines
- Topic: Looking at an Index 645
- Replies: 34
- Views: 7298
Re: Looking at an Index 645
need to re-plumb the one shot lube lines, I own a Bridgeport, purchased new in '77. It has the Bijur one shot lubrication system. The machine sat idle for a few years so the one shot system didn't get used. From this experience I learned that, if one is using Vactra (in my case it's Vactra 2), the ...
- Thu Feb 08, 2024 4:34 pm
- Forum: Lathes
- Topic: How is it possible?
- Replies: 4
- Views: 431
Re: How is it possible?
Not exactly new technology. Cincinnati used that feature with their precision grinders. They called it a Filmatic bearing.Bill Shields wrote: ↑Thu Feb 08, 2024 12:54 pm Some bushings can be adjusted on the fly (hydraulically) to really grip the stock for specific operations,
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- Tue Feb 06, 2024 4:28 pm
- Forum: Lathes
- Topic: rusty compound slide ways - a death sentence?
- Replies: 12
- Views: 60042
Re: rusty compound slide ways - a death sentence?
Something else to try would to be to indicate the ID of the jaw surfaces - e.g. mount the chuck on the spindle, turn the chuck slowly by hand, Unless the jaws are rigid in the slides, that's a worthless test to perform, as they won't be loaded against the scroll so they most likely will occupy spac...
- Tue Feb 06, 2024 4:10 am
- Forum: Lathes
- Topic: rusty compound slide ways - a death sentence?
- Replies: 12
- Views: 60042
Re: rusty compound slide ways - a death sentence?
The triangle that forms (on the gripping surfaces of the jaws) appears to be roughly the same size on all three sides, so I don't think I'd worry too much about the gaps you speak of. They have nothing to do with the operation of the chuck aside from determining the minimum size the chuck can grip. ...