Extreme welding

Show some respect, these guys earned it. This is no fluffy forum, it's for the working guys with little patience for stupid shit. Pose the question as
hypothetical and you might not get flamed out. You got welders from the pipelines to the Space Shuttle here.This looked like a bogus post. I won't not-pick it but if you look at it, one can easily raise an eye-brow.
Rob
Fraser Competition Engines Chicago, IL.

Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

will
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

The big money is on the guy who comes into a group of professionals and proposes some preposterous dangerous adolescent what if scenario.
I'm too busy building things and doing things to take the time to do potentially fatal destructive testing.
YMM(and probably does)V
Steve
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

So, are you saying that the average welder knows an equal amount about psychology?
Steve ;-)
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
wrote

Humm (scratches head).... yeah, well, heck, thats probably a safe bet, no ? The bigger question is would said 'average welder' even *want* to know anything about MHP's ?

Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
wrote

When I worked in the oilfield, and we had a few days break, or a week off, the stories most of the welders came back with was stuff that made Desperate Housewives look like A Study In Boring Married Life. Many had hands on up close and personal experiences with the system of CPS, DV, anger management, court ordered programs, POs, and a menagerie of MHPs.
It was riveting stuff.
Steve
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
wrote

Desperate
management,
Hum, Ok. So that probably explains why person A tells person B in a welding NG to seek help of a MHP. Didn't realize there was this association bwtween the 2 fields. Learn something new everyday.

Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

There might be a connection, or maybe a chemical bond. In 1984 James Huberty entered a McDonalds in San Ysidro, CA, ( San Diego), and killed 21 and wounded 19 before being killed by a Police sniper. His widow unsuccessfully sued McDonalds in 87 claiming that a flavor enhancer in Chicken McNuggets reacted with the high lead and cadmium levels built up in his body from being a weldor for 14 years.
--
Stupendous Man,
Defender of Freedom, Advocate of Liberty
  Click to see the full signature.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Put a ccoin behind the fuse and wait for the arc....
http://video.google.com/videoplay?docid519628887702093783&pl=true
Regards,
Boris Mohar
Got Knock? - see: Viatrack Printed Circuit Designs (among other things) http://www.viatrack.ca
void _-void-_ in the obvious place
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
Ohhhhhhhhhhhhh oooooooooooops!
Boris Mohar wrote:

Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
I actually did something sort of like that about 40 years ago ( I've grown wiser as I've aged, though). I put a 1500 watt hot plate in series with 2 carbon rods that I dug out of a couple of D sized flashlight batteries. Plugged the contraption into the wall socket and with a little practice was able to maintain a stable arc between the carbon rods. I didn't try welding with the setup, but it was fun at the time melting just about anything imaginable, and hey, I'm still alive to write this aren't I? Ahhhhhh the good old days when curiosity trumped wisdom. Paul........in Redland
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
hey, I'm still alive to write this aren't I? Ahhhhhh the

I guess it was Darwinism that kept some of US alive. I say US because when I think of some of the stooooopid things I have done, and gotten off light, there was something else working there besides my brain.
Steve
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
Darwinism?????????? Crap, I always thought it was just blind luck. Anyone besides me used to dump gasoline into manholes as a kid and then talk the next door neighbor kid into dropping a match in? ........Christ, I feel like I should be typing in some kind of disclaimer here. Paul...........in Redland
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

When I was a kid, we once tossed a firecracker down a manhole cover slot.
Baboom!
The lid shot straight up, and made a hell of a racket when it landed.
We, of course, (not being idiotic kids) fled the area while he lid was spinning and bouncing around on the street. My hearing hasn't been the same since.
Steve
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
I sold double length firecrackers - China Town (dragons :-) ) (side trip from the fish supplier on another floor of a side building.
A border - one of the three machinists living in our house in the early 50's - (B-36 specialists) - made me a lady finger pistol. It was cool - noisy but lots of fun. - The blast coming out of paper and pressure was neat. Just couldn't aim at the ground - can't soot a foot....
Somehow the gun showed up missing - have to ask Dad if he remembers it and what he recalls - the man who bent the noise making toy springs the day after Christmas... :-)
Martin
Martin Eastburn @ home at Lions' Lair with our computer lionslair at consolidated dot net NRA LOH & Endowment Member NRA Second Amendment Task Force Charter Founder IHMSA and NRA Metallic Silhouette maker & member
Steve B wrote:

-
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
Only once? Jees, after we did the gasoline thing the first time, it became a ritual in my neighborhood. We'd launch the manhole covers about 5 ft. I have often wondered what happened in the toilet bowls that were near by during our a, er, um......... experiments. Paul.......in Redland

Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

I've heard............
you CAN weld, but you do it with a 100w bulb in series on a 20a circuit off the breaker box. you use real small wire and get the 2nd worst welds even possible.
But I've heard it can be done. IIRC this was from some old stickwelders that learned on machines that would make archeologists stand up and take notice
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
Dangerous yes - possible yes - done all the time by electricians - either with a hot lead or a screw driver dropped into a hot box. Both dangerous - very - but it happens. A student of mine years ago came in with the story of his dad getting 'plated' about the face and hands dropping a large screw driver down a high voltage - naturally high current power panel at the University.
Martin
Martin Eastburn @ home at Lions' Lair with our computer lionslair at consolidated dot net NRA LOH & Endowment Member NRA Second Amendment Task Force Charter Founder IHMSA and NRA Metallic Silhouette maker & member
Tater Schuld wrote:

-
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

A 100 watt light bulb in series with your electrode would allow you to weld at about 1 amp which would not give you much welding power. If you were to use several stove or dryer elements in parallel you could get enough current flowwing for burning some thin rod. You would also generate an amazing amount of heat. Welding power supplies transform the high voltage, low current from your hydro service to the low voltage, high current used for welding with very little loss of power. Trying to weld directly from your service panel you are limited to the current that you can draw before tripping a breaker and you must also dump all of the excess voltage not needed for welding as heat. If you tapped directly into your panel and wanted to draw 100 amps from a single 120 volt phase you would need to dump about 90 volts or about 9000 watts.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
Tater Schuld wrote:

Oh? Ohms Law says the resulting current, accounting for the non-zero resistance of the leads, electrode and material being welded, would be LESS than the current normally drawn by the 100W bulb. (About an amp.) And the power would be primarily dissipated in the bulb, not the weld.
I think you'd only get a flickering bulb.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Polytechforum.com is a website by engineers for engineers. It is not affiliated with any of manufacturers or vendors discussed here. All logos and trade names are the property of their respective owners.