AboutErnie Leimkuhler Expertise Questions about Oxy-Acetylene welding/cutting, MIG, TIG, Flux-core, Stick welding,
brazing and soldering, bike frames, air frames, motorcycle frames, structural welding,
pipeline welding.Also questions about Welding Certifications. All questions about
fabrication of metals (stainless steel, steel , aluminum, brass, bronze, copper). Some
questions about underwater welding.
Experience Extensive background in most welding fields. 18 years fabrication of metal theatre scenery, 10 years structural steel, 2 years pipe welding, 10 years as a Welding Instructor at South Seattle Community College, and 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.
Question Any pointers on arc welding in the 4g open butt 6010, 7018 hot, fill and cap.
Answer Is this on Pipe or Plate?
A 4G open root plate test is not that common in the US, but is used in Canada.
The things to keep in mind when running your root pass will be to use 1/8" 6010 rod, running around 90 - 105 amps, using a slight forehand position so you are pushing the weld.
The 6010 will have a whip motion to it to break up the heat.
The 7018 is just slow and steady with a painfully short arc, and a backhand angle of about 15 degrees.
The rule of thumb with all 7018 is that a 14 inch electrode should yield 5 - 6 inches of weld in all positions.
If you are getting 7 inches then slow down, 4 inches... speed up.
If you run it right the flux should just fall off.
The most common error is going too fast, the second most common error is too long of an arc.
Always position overhead plates just above eye level, then bend your knees and crouch down to start your weld.
As the rod gets shorter, just straighten your legs, rather than extending your arms.
The actual motion of the rod is very difficult to put into words.
There is a series of training videos I found last year that are excellent.
They were done by a fellow named Doug Smith and they are the best I have ever seen on open root welding.
