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Ernie Leimkuhler

U.S.
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Expertise

Questions about Oxy-Acetylene welding/cutting, MIG, TIG, Flux-core, Stick welding, brazing and soldering, bike frames, air frames, motorcycle frames, structural welding. Also questions about Welding Certifications. All questions about fabrication of metals (stainless steel, steel , aluminum, brass, bronze, copper). Basic questions about underwater welding. TIG is my strongest subject.

Experience in the area

Extensive background in most welding fields. 18 years fabrication of metal theatre scenery, 10 years structural steel, 2 years pipe welding, 9 years as a Welding Instructor at South Seattle Community College, and 4.5 years at the Divers Institute of Technology. 12 years Industrial Welding Consultant for fabrication shops in the greater Seattle Area. 11 years Architectural Metal Fabrication. 8 years in Film/TV; SPFX/construction/set-deco/props/. 27 years Blacksmithing.

Organizations

American Welding Society - Welding Inspector/Educator

Publications

Do a search on google groups for "Ernie Leimkuhler" in the rec.crafts.metalworking and sci.engr.joining.welding groups. http://www.stagesmith.com/ http://www.metalwebnews.com/ Blacksmith's Gazzette - Anvil Making

Education/Credentials

BA Theatre Technology - Purdue University.

What do you like about this subject?

All fabrication is based on using one or more of these processes to get your part made. Addition - Welding, Soldering, Brazing... Subtraction - Milling, Turning, Drilling, Sawing, Planing, Grinding, Punching, Shearing... Forming - Bending, Forging, Drawing, Rolling, Stamping, Spinning, Swaging... The trick is to know which one to use when.

What do you still hope to achieve/learn in this field?

More NDT traing, especially Phased Array Ultrasound. Phased Array Ultrasound is very "Star Trek" future sci-fi stuff. Allows you to look right through solid metal and see a picture of what is going on inside in real time.

Something interesting about this subject that others may not know:

People think of steel as hard, but the more you learn the more you realize it is more like clay than stone.

Something controversial or provocative about this subject

I see no barrier between trade skills. Cabinetry, glassblowing, jewelry, blacksmithing, pottery, metal-spinning, machining, cooking, knifemaking, welding... They are all just variations on a theme, with 3 parameters : Materials, Skills, and Equipment. You can never have too many tools in your toolbox. I love having options, and sometimes welding isn't the right way to go and a rivet is better.


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Chad03/12/12101010Thanks for taking time to answer my .....
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Recent Answers from Ernie Leimkuhler

2012-04-25 E6010 Electrodes:

6010 has an astounding ability to chew through rust to get to good steel.  It is the perfect rod for welding old rusted steel to new steel, however...  6010 root , 7018 fill and cover is an extremely common

2012-04-12 tempilstik:

It is a bit more complicated than that.  The temperature range should be determined by what alloy of steel you are welding, but for the sake of simplicity you could just go for a 500 degF stick.  500 degF

2012-03-13 hooking up acetylene bottle:

There are Aluminum Bronze wrenches made for working around flammable gasses.  The brand name is "Ampco".    However they are very expensive and mostly unnecessary for everyday use by most welders.  Standard

2012-03-06 S.M.A.W.:

To start, with any DC weld arc current travels from the negative to the positive.  With TIG this means greater penetration with DC electrode negative than positive.     With SMAW this is reversed because

2012-01-26 Symbols:

The welding symbol never gives information about the materials.  That is what dimensions are for.  The weld symbol would only cover the fact that it is a double sided flare V weld, and whether it was continuous

 

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