Search found 1784 matches

by NP317
Sun Jun 16, 2019 11:59 pm
Forum: General Discussion
Topic: Turning plastic on a metal lathe
Replies: 16
Views: 320

Re: Turning plastic on a metal lathe

To answer your interest: I restored and Managed the Student Machine+ Shops at the University of Washington Mechanical Engineering College in Seattle, WA for 11 years. After getting the shops restored to sort-of modern usage, it had 1 excellent Bridgeport mill, four new 2-axis CNC BP clone mills, and...
by NP317
Sun Jun 16, 2019 11:25 pm
Forum: Live Steam
Topic: 2019 Big Boy schedule
Replies: 3
Views: 413

Re: 2019 Big Boy schedule

Truly amazing that the U.P Big Boy #4014 is steaming again! I look forward to being trackside during one its voyages. Equally amazing is the restoration on Baldwin's smallest Mallet, SKOOKUM. 2-4-4-2. I rode it during steam tests in May this year, in Garibaldi, Oregon, USA. Two of the most unlikely ...
by NP317
Sun Jun 16, 2019 10:32 am
Forum: General Discussion
Topic: Turning plastic on a metal lathe
Replies: 16
Views: 320

Re: Turning plastic on a metal lathe

One plastic to be careful when machining:
PVC.
It can off-gas chlorine which will quickly rust any exposed metal surfaces.
I always prep the machines by applying a coating of oil for protection.
It wipes clean when the job in done.
~RN
by NP317
Thu Jun 13, 2019 9:07 pm
Forum: Build Log
Topic: Project: N&W class J on 5"gauge
Replies: 141
Views: 55528

Re: Project: N&W class J on 5"gauge

Gorgeous work, as usual.
Thanks for sharing.
RN
by NP317
Sun Jun 09, 2019 10:42 am
Forum: Live Steam
Topic: Boiler treatment
Replies: 23
Views: 936

Re: Boiler treatment

And GN and SP&S used exhaust steam injector systems, with similar results(?)
I've been trying to learn more about those systems.
~RN
by NP317
Sun Jun 09, 2019 10:40 am
Forum: Grand Scale Railroading
Topic: Woodinville Shops
Replies: 204
Views: 43059

Re: Woodinville Shops

Better plastic ideas. Good.
RN
by NP317
Sat Jun 08, 2019 9:53 pm
Forum: Grand Scale Railroading
Topic: Woodinville Shops
Replies: 204
Views: 43059

Re: Woodinville Shops

I vote for a bearing washer of thin HDPE.
~RN
by NP317
Sat Jun 08, 2019 9:50 pm
Forum: Live Steam
Topic: Boiler treatment
Replies: 23
Views: 936

Re: Boiler treatment

Russ, one followup question, regarding oxygenation. In your start up procedure, do you add anything that specifically scrubs dissolved oxygen from the water? Thanks Glenn No, I do not. But that won't prevent me from deciding to do that later. Again, the condition of my used boiler says it's managem...
by NP317
Sat Jun 08, 2019 9:30 pm
Forum: Live Steam
Topic: Boiler treatment
Replies: 23
Views: 936

Re: Boiler treatment

Russ, can you confirm that heating water in the boiler causes the dissolved oxygen to dissipate soon as the heat hits it? When you vent steam, are you venting all the dissolved O2? If so, what temperature/ pressure do you need to reach to first achieve this? How does this affect fresh water added f...
by NP317
Fri Jun 07, 2019 8:26 pm
Forum: Lathes
Topic: QC toolpost for Atlas 618
Replies: 16
Views: 397

Re: QC toolpost for Atlas 618

I also started machining with a well-cared-for 6" Atlas lathe. Complete with a quick-change gear box!
Yes, the lantern tool posts were always a limiting factor.
I replaced that nice little lathe before making an alternative tool holder. I like the triangular idea!
~RN
by NP317
Fri Jun 07, 2019 12:05 pm
Forum: Live Steam
Topic: Disney American
Replies: 422
Views: 85340

Re: Disney American

Jack:
Which Museum is that going into?
~RN
by NP317
Fri Jun 07, 2019 12:02 pm
Forum: Live Steam
Topic: Boiler treatment
Replies: 23
Views: 936

Re: Boiler treatment

Carl: Points well made. My standard steaming operating procedures do include testing all steam appliances prior to leaving the steaming bay. I have a dental tool that works perfectly for holding the lower pressure SuperScale safety valve closed while testing the operation of the higher safety. Same ...