Search found 147 matches

by TRX
Thu Dec 05, 2019 6:14 pm
Forum: General Discussion
Topic: Interrupted Cut Removes Tool Point
Replies: 27
Views: 1075

Re: Interrupted Cut Removes Tool Point

I bought some import "HSS" bits that looked perfectly normal, bright ground finish. They're apparently plain steel; aluminum will wear away the edge quickly, and they won't really cut mild steel at all, just gouging troughs after the edge rounds off.
by TRX
Tue Oct 29, 2019 12:07 am
Forum: Lathes
Topic: Winding springs
Replies: 16
Views: 2703

Re: Winding springs

If the spring is large enough you can bend the end coils with pliers so you don't have to grind as much. But it won't be a proper "closed end" spring.
by TRX
Mon Feb 11, 2019 9:40 pm
Forum: Gunsmithing
Topic: Enfield p14 question
Replies: 5
Views: 3150

In case you didn't know, Nicolaus & Associates has a book with the US Army Ordnance drawings for the P17.

https://www.nicolausassociates.com/M1917.htm

It has all the toleranced drawings, heat treat, and finish information to make a P17 from scratch.
by TRX
Tue Jan 01, 2019 3:27 pm
Forum: General Discussion
Topic: Speaking of Shop Realities ...
Replies: 25
Views: 6505

Re: Speaking of Shop Realities ...

When I need a 12" piece of 1" round bar, and the longest pieces I have on hand are 11-1/4, 11-1/2, and 11-3/4"...

It would be funny if similar things didn't happen so often. So a lot of projects start with "weld up two small pieces into a big-enough piece..."
by TRX
Tue Nov 06, 2018 2:46 pm
Forum: General Discussion
Topic: Shop realities
Replies: 68
Views: 12462

Long runs of sewer line are tricky with those macerator toilet pumps; I've installed many of them. The check valves always leak, so the pump cycles from time to time. if the power is off, bad things can happen. Despite being a fairly established product - I remember ads in Popular Mechanics etc. fo...
by TRX
Tue Nov 06, 2018 2:39 pm
Forum: General Discussion
Topic: Shop realities
Replies: 68
Views: 12462

pinhole leak in the bottom of the tank Check your local propane place. They may have a collection of expired propane tanks that are no longer lawful to refill. Unscrew the valves, wash them out with soap and water (the odorant builds up inside the tank), then manifold as many of them together as ne...
by TRX
Tue Nov 06, 2018 2:33 pm
Forum: General Discussion
Topic: Shop realities
Replies: 68
Views: 12462

My lines are reasonably tight, so it doesn't cycle often. My lines are still airtight 28 years after installation. The chucks always leaked a little air, and still do. Enough that I plugged off several of them that I seldom use. I probably ought to put an elbow, pigtail, and ball valve on each air ...
by TRX
Fri Nov 02, 2018 10:05 pm
Forum: General Discussion
Topic: Repainting equipment
Replies: 6
Views: 2370

Re: Repainting equipment

I bought a Gorton vertical mill from a machine tool dealer. They had prettied it up with a fresh coat of paint. It was cat-vomit-green, with lumps like those textured ceilings that were common in the 1970s. Shortly after I got it home I went after it with paint stripper, grinding discs, and eventual...
by TRX
Fri Nov 02, 2018 10:01 pm
Forum: General Discussion
Topic: Shop realities
Replies: 68
Views: 12462

Re: Shop realities

Run some PVC or Pex out for water, for an outside faucet and a sink to wash up in. And if you run a 3/4 or larger return line beside it, you can install one of those "upflush" toilets that have a macerator and pump the effluent through a garden hose. Run that to the sewer side of any convenient trap...
by TRX
Sun Oct 28, 2018 5:05 am
Forum: Lathes
Topic: lapping internal taper?
Replies: 20
Views: 6400

I found this company: https://triaticinc.com/tapered-diamond-hones/ They look like steel spindles impregnated with diamonds. I'd call them laps, they call them hones. There's also a company that makes a "taper honing machine". Their web site is the usual Flash and Java infected mess, but best as I c...
by TRX
Mon Oct 22, 2018 7:12 pm
Forum: Milling Machines
Topic: tooling plate
Replies: 8
Views: 3256

Re: tooling plate

Flathead screws made from threaded rod might be better than socket head set screws; you could use a pick to clean the slot before unscrewing them, rather than trying to dig or blow chips out of the socket.
by TRX
Mon Oct 22, 2018 7:10 pm
Forum: Milling Machines
Topic: Wavy Parallels. What are they good for?
Replies: 8
Views: 4043

Re: Wavy Parallels. What are they good for?

A former employer had a few. I liked them because they didn't fall over like thin parallels, when I opened the jaws to change parts.