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by Bill Shields
Thu Jan 03, 2008 6:30 pm
Forum: Live Steam
Topic: Once again.... Someone in need of Sight Glass Help.
Replies: 17
Views: 2170

Glass - Turret

The only thing about what you are proposing is not that YOU know what you are doing, but what your successor will / will not do...and ruin a good boiler / maybe hurt someone.... why don't you just tap the top of the boiler and run a separate line to the glass? BTW, I agree on 3/4" loco brakes.....
by Bill Shields
Wed Jan 02, 2008 9:55 pm
Forum: Home Shop CNC
Topic: CNC 101 "step by step"
Replies: 21
Views: 8703

OK

what do I know, I only write CAM software for a living....

what you have is some sort of hybrid that doesn't fit into one of the standard definitions used by the biggies of the industry...
by Bill Shields
Wed Jan 02, 2008 8:42 pm
Forum: Live Steam
Topic: Plumbing and Piping
Replies: 28
Views: 3674

Piping

Not yet finished, but my piping is nowhere near as complex... Some bent pipe, some fittings..depending on how tight a bend I can create....which was also somewhat typical of some full-size locos... http://i93.photobucket.com/albums/l45/crazysteamer/piping/backheadallpiped.jpg Right now, the loco is ...
by Bill Shields
Wed Jan 02, 2008 8:35 pm
Forum: General Discussion
Topic: Boston Gear Miter Gears
Replies: 21
Views: 1914

screws

10-32.....

were it me, I wouldn't create any flats and lose threads...just drill / tap in place and have fun....
by Bill Shields
Wed Jan 02, 2008 7:57 pm
Forum: General Discussion
Topic: Boston Gear Miter Gears
Replies: 21
Views: 1914

set screws

I would just turn down a piece of metal that will fit in the bore minus a few thou, then loctite them to the shaft and drill / tap as needed.

Heat with anything to 300+ and it falls apart...

No biggie...I do it all the time...
by Bill Shields
Wed Jan 02, 2008 7:52 pm
Forum: Live Steam
Topic: Designing a triple gage track
Replies: 24
Views: 3146

3/4"

My 3/4" Hudson will run all day, pulling 6 people around a track and only run out of steam when it runs out of water...of course the giant propane burner has a little to do with that...but otherwise, the boiler is Langworthy design - steel instead of copper, which theoretically works against st...
by Bill Shields
Wed Jan 02, 2008 7:45 pm
Forum: Live Steam
Topic: Automatic Cylinder Drain Valves
Replies: 13
Views: 4125

Release Valve

Yes, the pressure / condensate needs to be dumped to atmosphere. I also use the LS valve, but don't experience any significant delay in opening. Once the 'hold closed' pressure is released, any pressure from the cylinder, either steam or water, drives mine open as needed. The observed delay might be...
by Bill Shields
Wed Jan 02, 2008 7:41 pm
Forum: Home Shop CNC
Topic: CNC 101 "step by step"
Replies: 21
Views: 8703

2-1/2 vs 3 vs 3 simultaneous

What you are describing is a 3 axis machine but not a 3 axis SIMULTANEOUS controller.
by Bill Shields
Tue Jan 01, 2008 9:57 pm
Forum: Live Steam
Topic: Designing a triple gage track
Replies: 24
Views: 3146

triple gauge

We have such a track at Penna Live Steamers, only it is 2-1/2, 3-1/2, 4-3/4 and yes, the switches are quite interesting to say the least. If you need info, contact B&O Bob on this board. I can probably scare up some pictures better than this one...but since I haven't SPECIFICALLY taken pictures ...
by Bill Shields
Sun Dec 30, 2007 10:36 am
Forum: Home Shop CNC
Topic: First CNC project near completion!
Replies: 16
Views: 8919

Alignment

M: Unless the rods are VERY LARGE, they really won't hold much alignment that would be worth counting on. As long as you are aware of the problem, you should be alright. One thing that I recommended to a fellow a while back is to use a dial indicator mounted on the head, touching an 'indicator plate...
by Bill Shields
Sun Dec 30, 2007 9:53 am
Forum: Home Shop CNC
Topic: First CNC project near completion!
Replies: 16
Views: 8919

CNC

Just be careful of the round column that can allow the head to move relative to the table....when you least expect it

Without the 'feel' in the handles....you can sometimes push (esp with a dull cutter) a lot harder than you might have with a hand wheel....
by Bill Shields
Sun Dec 30, 2007 9:47 am
Forum: Milling Machines
Topic: Benchtop Horizontal Mill, is it worth it?
Replies: 8
Views: 7355

Conversion

Why? The primary reason to have a horizontal mill is to have mechanical abilities that you do not have with a vertical...things like tombstones, pallets, 4th axes, huge tool changers etc:..and, of course, the nicety of having the chips fall away from the work with a steady stream of coolant to wash ...

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