Soft copper isn't very nice to machine in the first place, but an ultra sharp tool helps a lot.
I have also seen many times where using milk as a cutting fluid supposedly works very well when machining copper. You might want to clean things up really well after though!
Search found 7200 matches
- Tue Jan 23, 2024 9:12 am
- Forum: General Discussion
- Topic: Modifing Copper Sealing Washers?
- Replies: 11
- Views: 541
- Tue Jan 23, 2024 9:08 am
- Forum: General Discussion
- Topic: Drilling holes in brass, should I pilot hole?
- Replies: 17
- Views: 1034
Re: Drilling holes in brass, should I pilot hole?
Most yellow metals will "self feed" if pilot drilled.
You can reduce the rake on the cutting edge of the drill to eliminate that issue. Well worth the trouble if you are doing a number of parts or work with these alloys a lot.
You can reduce the rake on the cutting edge of the drill to eliminate that issue. Well worth the trouble if you are doing a number of parts or work with these alloys a lot.
- Sat Jan 20, 2024 4:55 pm
- Forum: General Discussion
- Topic: Advice On Buying A Wiggler and Centre Finder 5 Piece Set.
- Replies: 21
- Views: 11539
Re: Advice On Buying A Wiggler and Centre Finder 5 Piece Set.
That makes sense!Bill Shields wrote: ↑Sat Jan 20, 2024 3:59 pm actually...if the wiggler is not rotating, it will not make a difference where the point is relative to the center line....
the DTI will stay stationary
Thanks!
- Sat Jan 20, 2024 3:52 pm
- Forum: General Discussion
- Topic: Advice On Buying A Wiggler and Centre Finder 5 Piece Set.
- Replies: 21
- Views: 11539
Re: Advice On Buying A Wiggler and Centre Finder 5 Piece Set.
I don't see this. If the chuck is adjusted so that the wiggler does not move when the chuck is rotated (according to the DTI), it seems to me that the point of the wiggler must be on the lathe's rotational axis. I don't see that the shape of the wiggler matters in any way. If the point is not conce...
- Fri Jan 19, 2024 6:12 pm
- Forum: Lathes
- Topic: Manually machining a piston ovality
- Replies: 20
- Views: 1069
Re: Manually machining a piston ovality
The ones I am familiar with from the '40's were ground on the O.D to achieve the ovality and taper required. .005" ovality, and .005" taper, so fairly easy.
But them there is Honda, taking it to an extreme!
- Wed Jan 10, 2024 4:12 pm
- Forum: Lathes
- Topic: Tailstock Position Accuracy?
- Replies: 7
- Views: 51583
Re: Tailstock Position Accuracy?
DTI's don't always read the same when you turn them upside down.
It's that gravity thing again.
It's that gravity thing again.
- Sun Dec 17, 2023 7:58 am
- Forum: Buy, Sell, Trade, Wanted, Free!
- Topic: Brown & Sharpe No 5 Surface Grinder *** SOLD ***
- Replies: 4
- Views: 7706
Re: Brown & Sharpe No 5 Surface Grinder *** SOLD ***
Good news!
I was about to give in...
I was about to give in...
- Sat Dec 16, 2023 9:17 am
- Forum: Lathes
- Topic: Tachiyagawa Lathe
- Replies: 5
- Views: 10891
Re: Tachiyagawa Lathe
If you could post an image of the lathe I'm sure someone could help.
There are lots of generic Taiwanese lathes out there that were marketed under various names.
There are lots of generic Taiwanese lathes out there that were marketed under various names.
- Sun Dec 10, 2023 6:19 pm
- Forum: Casting & Foundry Work
- Topic: Casting a straight edge
- Replies: 32
- Views: 34558
- Sat Dec 09, 2023 10:00 am
- Forum: Casting & Foundry Work
- Topic: Casting a straight edge
- Replies: 32
- Views: 34558
Re: Casting a straight edge
Please do not introduce gravity as the cause, as that force is too weak. Interesting, but I never really gave it much thought! Crankshafts should always be stored in a vertical position. My understanding is that they can bow over time if in a horizontal position and not properly supported. No first...
- Mon Dec 04, 2023 6:12 am
- Forum: Casting & Foundry Work
- Topic: Casting a straight edge
- Replies: 32
- Views: 34558
Re: Casting a straight edge
Are you going to toss it out in the yard for a couple years to "season" it?
That seems to be a subject now open to considerable debate!
That seems to be a subject now open to considerable debate!
- Thu Nov 23, 2023 4:17 pm
- Forum: Lathes
- Topic: Newbie getting in over my head?
- Replies: 135
- Views: 38507