Search found 689 matches

by RET
Mon Feb 05, 2018 9:59 am
Forum: Live Steam
Topic: Metallurgy of Steam Engines
Replies: 21
Views: 855

Re: Metallurgy of Steam Engines

Hi rkcarguy, Teflon is a soft plastic so what probably happened is that dirt got embedded in the Teflon and wore the aluminum away. This happens also with metals; abrasive dirt gets embedded in the softer metal and that wears away the harder one which is not what you would expect to happen. As the p...
by RET
Sat Feb 03, 2018 10:33 am
Forum: Live Steam
Topic: Need some speed tips for getting a project done faster.
Replies: 99
Views: 2781

Re: Need some speed tips for getting a project done faster.

Hi, A couple of comments and observations. Kimball McGinley, thanks for your compliment! Shild, having the "shelves" tipped makes it easier to see whats there as well as making it easier to remove and replace the items. Finally, power feeds will always give a better finish than feeding by hand becau...
by RET
Thu Feb 01, 2018 7:54 pm
Forum: Live Steam
Topic: Need some speed tips for getting a project done faster.
Replies: 99
Views: 2781

Re: Need some speed tips for getting a project done faster.

Hi, As I said, there is always more. I said that you can get a broken tap out using a diamond burr and a Dremel. With the small taps it helps a LOT if you use a binocular microscope. Working by feel is possible, but there simply is no substitute for being able to see what you are doing. In that vein...
by RET
Thu Feb 01, 2018 10:21 am
Forum: Live Steam
Topic: Need some speed tips for getting a project done faster.
Replies: 99
Views: 2781

Re: Need some speed tips for getting a project done faster.

Hi, There is such a thing as being in too much of a hurry. I always tap by hand, never under power. That way I have better control over things. Under power, by the time you realize what has happened, its too late and you don't begin to have the same "feel." Remember, ninety nine percent of the time ...
by RET
Sun Jan 28, 2018 3:28 pm
Forum: Live Steam
Topic: Need some speed tips for getting a project done faster.
Replies: 99
Views: 2781

Re: Need some speed tips for getting a project done faster.

Hi, I forgot to say that I have a complete set of fractional drills from 1/16" to 1/2", a set of Letter drills and a set of number drills from #1 to #80. Many of them you almost never use, but a lot of them are used a lot. For our hobby, all three are almost essential to have. Generally I use high s...
by RET
Sun Jan 28, 2018 3:09 pm
Forum: Live Steam
Topic: Need some speed tips for getting a project done faster.
Replies: 99
Views: 2781

Re: Need some speed tips for getting a project done faster.

Hi, Since I work mostly in 3 1/2" gauge, I'm guessing when it comes to building in other scales, but I think the building time would be similar. No matter what the scale, if you want an engine that runs well, you still have to make all the same bits and pieces, just that in the larger scales you are...
by RET
Sat Jan 27, 2018 3:05 pm
Forum: Live Steam
Topic: Need some speed tips for getting a project done faster.
Replies: 99
Views: 2781

Re: Need some speed tips for getting a project done faster.

Hi shild, One or two final words. First, as you can see it pays to do everything you can to have the most often used tools at hand when you need them. It does save time. This shows the knuckle "stick". Coupler stick made by CNCa.jpg Here are the partially complete nine knuckle blanks (with added tai...
by RET
Thu Jan 25, 2018 3:43 pm
Forum: Live Steam
Topic: Need some speed tips for getting a project done faster.
Replies: 99
Views: 2781

Re: Need some speed tips for getting a project done faster.

Hi, Here are some pictures to illustrate what I am talking about. First, the tap holder block. National Coarse on the left, National Fine on the right and taper taps at the front with bottoming at the back. I just look at the tap table on the wall to see what tap & body drill I need so they aren't i...
by RET
Thu Jan 25, 2018 11:05 am
Forum: Live Steam
Topic: Need some speed tips for getting a project done faster.
Replies: 99
Views: 2781

Re: Need some speed tips for getting a project done faster.

Hi shild, Bill Huxhold, our master builder in TSME (Toronto Society of Model Engineers) uses the "stick" method a lot and it really works for him. He routinely builds working scale models that the rest of us wouldn't even consider trying. His models look as though you took the real thing and just sh...
by RET
Wed Jan 24, 2018 3:34 pm
Forum: Live Steam
Topic: Need some speed tips for getting a project done faster.
Replies: 99
Views: 2781

Re: Need some speed tips for getting a project done faster.

Hi, Two things. First, time spent improving your shop (it mostly happens over years) isn't wasted. Every time I added a piece of equipment, I made adapters & tooling for that machine to increase its versatility. Make sure you get the most common attachments (chucks, toolholders, carriage stops & col...
by RET
Mon Jan 15, 2018 9:10 pm
Forum: Live Steam
Topic: Boiler stays and heat expansion
Replies: 17
Views: 825

Re: Boiler stays and heat expansion

Hi, I don't consider myself to be a "real" expert, but I can answer some of your questions. If you look at the Big Boy boiler we just tested, on the firebox, the stays are at 1" spacing in both directions. On the flat side of the firebox there are 5 stays vertically and 11 horizontally. Because each...
by RET
Mon Jan 15, 2018 8:25 pm
Forum: Live Steam
Topic: Silver Soldering O/A tip size
Replies: 11
Views: 597

Re: Silver Soldering O/A tip size

Hi, To clarify things a bit, there are several kinds of firebrick. All will take high temperatures, but they aren't created equal. There are at least two different grades of insulating firebrick, G20 and G23. The higher number is a better insulator but has less mechanical strength. They are very lig...