Search found 306 matches

by Orrin
Thu Oct 09, 2003 8:24 am
Forum: General Discussion
Topic: x-rayed castings
Replies: 16
Views: 1887

Re: x-rayed castings

I respectfully disagree that electromagnetic waves will make either food, castings, or any other material radioactive. If there is any interaction of a these waves with a nucleus, the reaction is transient and will not cause delayed radioactivity. If there are any changes in food, for instance, by g...
by Orrin
Wed Oct 08, 2003 7:00 pm
Forum: General Discussion
Topic: x-rayed castings
Replies: 16
Views: 1887

Re: x-rayed castings

Next time, I'll hit the "T" key a bit harder. It's "spectrum."

[img]/ubb/images/graemlins/cool.gif"%20alt="[/img]Orrin
by Orrin
Wed Oct 08, 2003 6:56 pm
Forum: General Discussion
Topic: x-rayed castings
Replies: 16
Views: 1887

Re: x-rayed castings

You won't get a bit of argument out of me. While not strictly true, it's a helluva lot more enlightment than the average person has access to. That was the purpose of my post. Every school would be very well served to display a poster in their classrooms that shows the progression of the entire elec...
by Orrin
Wed Oct 08, 2003 10:23 am
Forum: General Discussion
Topic: x-rayed castings
Replies: 16
Views: 1887

Re: x-rayed castings

An X-ray will not make anything radioactive. It is also known as a gamma ray. It's a form of energy that is found in the same category as radio waves, radar, sunlight and infra-red radiation. What distinguishes the X-ray from all the rest of these is its higher energy. But, an X-ray is no more likel...
by Orrin
Mon Oct 06, 2003 10:05 am
Forum: General Discussion
Topic: Toolpost Grinding
Replies: 6
Views: 965

Re: Toolpost Grinding

I'm sure you already know this, but just in case... Cover all precision surfaces in your shop before TP grinding. I advocate the use of old cotton bed sheets or terrycloth towels. The fabric catches the grit and hangs on to it. On the other hand, the grit tends to slide off smooth surfaces such as p...
by Orrin
Mon Oct 06, 2003 9:42 am
Forum: Live Steam
Topic: Stainless Boilers and Copper Tubes
Replies: 21
Views: 2593

Re: Stainless Boilers and Copper Tubes

Yes, and nuclear power stations maintain strict water chemistry controls. Usually, this means that they employ full a full-time chemist who is equipped with a costly laboratory. Furthermore, nuclear power stations use de-ionized water for makeup. No water is used that doesn't pass muster. The argume...
by Orrin
Tue Sep 30, 2003 12:33 pm
Forum: I.C. Engines
Topic: P.R.I.M.E. vs G.E.A.R.S. ??
Replies: 10
Views: 4621

Re: P.R.I.M.E. vs G.E.A.R.S. ??

This just came in: Sept 25 & 25, 2004 Probably at the armory at Jansen Beach close to I5 and Marine drive by the Columbia. The bldg is ½ the size of the PRIME area Their Web site will eventually be... http://www.oregongears.org/ ...but at this time it has zero information. [img]/ubb/images/graemlins...
by Orrin
Tue Sep 30, 2003 9:19 am
Forum: Welding
Topic: I can't achieve that "silent" neutral flame in OA
Replies: 7
Views: 1116

Re: I can't achieve that "silent" neutral flame in OA

I have the same problem. I try to duplicate the flame we could get on our O/A rig in my high school shop class. With the tips we had it was a snap to weld thin sheet metal. This was about a half-century ago, so maybe the torch tips were from a different era. I vaguely remember reading about differen...
by Orrin
Mon Sep 22, 2003 11:15 am
Forum: I.C. Engines
Topic: Can a working V-8 be made on Sherline?
Replies: 11
Views: 4692

Re: Can a working V-8 be made on Sherline?

As others have said, it can be done as long as you keep things small. But, a V-8 is a very ambitious project. It would be wiser to start out simple and work up. Bob Shores sells plans for some single cylinder engines that can be built out of bar stock: http://www.bobshores.com/pages/1/index.htm For ...
by Orrin
Sun Sep 14, 2003 8:09 pm
Forum: General Discussion
Topic: Flexible Grinder Shaft Expriences/Opinions
Replies: 8
Views: 2235

Re: Flexible Grinder Shaft Expriences/Opinions

I purchased a home-made, but fairly well built flexible shaft setup at auction and used it until it nearly broke my leg. The cable was substantial, being about 3 or 4 feet long and having 1/2" diameter motor and accessory shaft diameters. I was using a it to clean the rust off something. The bristle...
by Orrin
Sun Aug 03, 2003 9:11 am
Forum: General Discussion
Topic: "Can't miss" hot air meet coming up
Replies: 1
Views: 553

"Can't miss" hot air meet coming up

For anyone interested in hot air or Stirling engines, there is a "can't miss" meet coming, August 15, 16 & 17 at Lake Itasca in Northern Minnesota. For some reason this is one of the best kept secrets, anywhere. But, this ought to fill you in on the details: http://www.enginerally.com/ You'll find p...
by Orrin
Tue Jul 29, 2003 12:59 pm
Forum: General Discussion
Topic: Forming barrel hoops
Replies: 13
Views: 6824

Re: Forming barrel hoops

My father-in-law, now deceased, was a cooper. I've watched him make hoops. All he did was pound them to shape on his anvil. Unless the barrel is a perfect cylinder, the hoop will need to be tapered. In other words, one side of the hoop will need to be larger in diameter than the other side. All Papa...