I'd sleeve it back to 1/2", and then make bushings with 1/2" O.D to accept 3/8", and 1/4" boring bars.
Example bushing types.
https://www.sommatool.com/catalog/acces ... shings.asp
Search found 6847 matches
- Sat Jan 16, 2021 5:30 pm
- Forum: General Discussion
- Topic: Boring Head Questions
- Replies: 14
- Views: 400
- Sat Jan 16, 2021 3:41 pm
- Forum: The Photo Album
- Topic: Amazing machine work
- Replies: 62
- Views: 29553
Re: Amazing machine work
Assembled crankshaft.
Rotating assembly being lowered into the crankcase.
- Sat Jan 16, 2021 7:27 am
- Forum: General Discussion
- Topic: Boring Head Questions
- Replies: 14
- Views: 400
Re: Boring Head Questions
The two holes are for extended range as well as internal and external cutting.
Seeing that the boring bars themselves are two different sizes, I would guess that the 9/16" hole was an error when sizing the holes originally!
Seeing that the boring bars themselves are two different sizes, I would guess that the 9/16" hole was an error when sizing the holes originally!
- Wed Jan 13, 2021 7:06 pm
- Forum: General Discussion
- Topic: 1 in 12 taper?
- Replies: 11
- Views: 367
Re: 1 in 12 taper?
1 in 12=4.7636 degrees.
5 degree tapered end mills
https://www.travers.com/3-flute-tapered ... tname=SITE
5 degree tapered end mills
https://www.travers.com/3-flute-tapered ... tname=SITE
- Wed Jan 13, 2021 6:37 pm
- Forum: The Photo Album
- Topic: Amazing machine work
- Replies: 62
- Views: 29553
Re: Amazing machine work
Just do this five more times tomorrow and the crankshaft will be assembled.
The crankshaft is brown due to the preservative I have on it. The journals get cleaned off as it gets assembled.
The crankshaft is brown due to the preservative I have on it. The journals get cleaned off as it gets assembled.
- Wed Jan 13, 2021 4:15 pm
- Forum: The Photo Album
- Topic: Amazing machine work
- Replies: 62
- Views: 29553
- Wed Jan 13, 2021 8:17 am
- Forum: The Photo Album
- Topic: Amazing machine work
- Replies: 62
- Views: 29553
Re: Amazing machine work
Connecting rod after mag inspection and shot peening.
- Wed Jan 13, 2021 6:27 am
- Forum: General Discussion
- Topic: 1 in 12 taper?
- Replies: 11
- Views: 367
Re: 1 in 12 taper?
In that application, It doesn't look like the angle itself is critical, just that the two parts mate up properly. If you tilt the head, and then machine both, they will match. If you tilt one part to mill it, and then tilt the head to mill the other part, they may not match properly. For that method...
- Tue Jan 12, 2021 8:50 pm
- Forum: General Discussion
- Topic: Does 404 SS anneal and become malleable?
- Replies: 12
- Views: 442
Re: Does 404 SS anneal and become malleable?
As stainless alloys go, it's easy to weld via the tungsten-inert-gas (TIG) process, using tri-mix as the shielding gas and a compatible filler. Why not Argon? Argon is suitable but the weld quality may not be as cosmetically pleasing. In my experience, tri-mix seems to be more forgiving with stainl...
- Tue Jan 12, 2021 9:39 am
- Forum: General Discussion
- Topic: Does 404 SS anneal and become malleable?
- Replies: 12
- Views: 442
Re: Does 404 SS anneal and become malleable?
Why not Argon?BigDumbDinosaur wrote: ↑Tue Jan 12, 2021 1:46 amAs stainless alloys go, it's easy to weld via the tungsten-inert-gas (TIG) process, using tri-mix as the shielding gas and a compatible filler.
- Sun Jan 10, 2021 5:14 pm
- Forum: The Photo Album
- Topic: Amazing machine work
- Replies: 62
- Views: 29553
Re: Amazing machine work
I bought that gasket from someone else.
- Sat Jan 09, 2021 8:33 pm
- Forum: The Photo Album
- Topic: Amazing machine work
- Replies: 62
- Views: 29553
Re: Amazing machine work
More nice parts!
Assembling a Packard Merlin two stage Supercharger.
Second stage Impeller. Second stage completed. First stage diffuser First stage Impeller.
Assembling a Packard Merlin two stage Supercharger.
Second stage Impeller. Second stage completed. First stage diffuser First stage Impeller.