Search found 736 matches

by John Hasler
Wed Jul 18, 2018 8:44 am
Forum: General Discussion
Topic: Machining Setup's with Few Comments
Replies: 59
Views: 8215

Re: Machining Setup's with Few Comments

Yes, that's what I meant. It will fully anneal copper, though.
by John Hasler
Tue Jul 17, 2018 7:34 pm
Forum: General Discussion
Topic: Machining Setup's with Few Comments
Replies: 59
Views: 8215

Re: Machining Setup's with Few Comments

Self-cleaning ovens get to 500C. That's enough for annealing.
by John Hasler
Mon Jul 16, 2018 10:12 am
Forum: General Discussion
Topic: TGP for hydraulics
Replies: 21
Views: 343

Re: TGP for hydraulics

Consider using air cylinders with oil instead of air.
by John Hasler
Sun Jul 15, 2018 10:46 pm
Forum: Welding
Topic: Annoying Movie Welding
Replies: 18
Views: 375

Re: Annoying Movie Welding

I like to read well-written fantasy. The problem with movie fantasy is that they make stuff up at random with no regard for internal consistency. They just do whatever they need to to move the plot along, as if they had not bothered to plan it out in advance. Superman is boring *because* he can do a...
by John Hasler
Sun Jul 15, 2018 10:27 am
Forum: Lathes
Topic: Monarch lathe
Replies: 33
Views: 764

Re: Monarch lathe

Harold_V wrote:
Sun Jul 15, 2018 1:58 am
I like the comparison to a Duesenberg. The car of my dreams. :-)

H
A friend of mine had a Bentley from that era. Incredible maintenance hassle.
by John Hasler
Fri Jul 13, 2018 12:57 pm
Forum: Welding
Topic: Annoying Movie Welding
Replies: 18
Views: 375

Re: Annoying Movie Welding

Science and technology are always bungled and garbled in movies even when they aren't fantasies. That's one of the reasons I no longer watch them.
by John Hasler
Fri Jul 13, 2018 10:19 am
Forum: Lathes
Topic: Monarch lathe
Replies: 33
Views: 764

Re: Monarch lathe

That's why I assume that I would need to design a drive myself, and why I'd consider keeping the motor-generator.

In fact, of course, I will probably never even have the opportunity to touch a 10EE.
by John Hasler
Fri Jul 13, 2018 8:14 am
Forum: Lathes
Topic: Monarch lathe
Replies: 33
Views: 764

Re: Monarch lathe

Replacing vacuum tube rectifiers with solid state devices is straightforward. However, if you are referring to the thyratrons (which are not vacuum tubes), replacing them with solid state devices would require replacing the entire motor control system with one of a modern design. I think that I woul...
by John Hasler
Thu Jul 12, 2018 4:53 pm
Forum: Lathes
Topic: Monarch lathe
Replies: 33
Views: 764

Re: Monarch lathe

If I had one with the thyratrons I'd be tempted to preserve the control system not because it's superior but just because it's cool. With the motor-generator rig I'd a least add closed-loop control, possibly scrapping the motor-generator, possibly not. I have a 2 hp dc motor with closed-loop control...
by John Hasler
Thu Jul 12, 2018 4:41 pm
Forum: General Discussion
Topic: Gem DTI
Replies: 4
Views: 207

Re: Gem DTI

I've got one of each. I don't see any significant difference.
by John Hasler
Wed Jul 11, 2018 8:05 pm
Forum: Live Steam
Topic: 1" U in 1/4" copper tube
Replies: 22
Views: 918

Re: 1" U in 1/4" copper tube

They pour the soapy water into the tubing, freeze the tube, and then bend the tube around a form to the radius/curve/shape desired. Any idea what function is performed by the addition of soap? H I think that the soap will cause the solution to gell rather than crystallizing as pure water would.
by John Hasler
Wed Jul 11, 2018 4:33 pm
Forum: Lathes
Topic: Monarch lathe
Replies: 33
Views: 764

Re: Monarch lathe

Well, I no doubt would if I had a 10EE, but I've never even been in the same room as one.

Surely it is possible to engage the cross-slide power feed without engaging the carriage power feed.