Arc Welding Library

This thread links to a small selection of informative threads in the arc welding forum. There's a lot more good stuff that can be found with the arc forum search.

To suggest useful threads for the library use the thread rating system. Click "Rate Thread" and vote for the thread.
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Techniques

Electrode positive or negative?
What's the difference between DCEN (DC electrode negative DC-) or DCEP (DC electrode positive DC+)? The electrode is the rod holder. All is explained if you read through far enough. Summary on page 4.

Arc welding machines

Arc Welder Group Test
Five arc welders compared, old vs new, cheap vs expensive, transformer vs inverter, AC vs DC. Only one of them blew up.

Cheap vs Expensive Arc Welders
A long thread with good information about the differences between cheap and expensive arc welders. Start at page 14 for more balanced views.

Oxford Welders
Advantages and disadvantages of Oxford Welders.

Do I need an Inverter?
What's good about them?

Buying an Inverter
Some thoughts on what to think about.

What's inside an Inverter Welder?
Photos and explanation.

Running an arc welder from a generator
Generators plus Arc welder.

Learning to Arc Weld

How to arc weld for beginners
Info on how to start arc welding if you've never done it before.

Learning with a cheap AC arc welder
Information about arc length, amps, and rod quality.

Current vs Speed vs Technique
Current might be altered to balance other factors.

ARC Welding Examples
Runnach's photo gallery of student arc welds in various positions.

Uphill stick welding
It's tricky - some tips on how to overcome gravity.

Rods

Arc welding rod brands
Members discuss their favourite brands of rod.

Welding rods for learning
Decent rods make learning much easier - cheap and expensive compared from page 4.

Electrode drying
Which rods need to be dried, and what temperatures.

Antique electrodes
Wrapped in asbestos!

Other materials

Hardfacing
Some thoughts on hard facing a digger bucket.

Bucket Repair - recommended rods
Avoiding cracks in bucket repair.

Lesson in Cast Iron
Real live evaluation of different methods of fixing a broken vice.

Stainless to mild steel
Which rods to use and why.

Stainless can be painless
A discussion about polarity and stainless rods. Last post is very informative.

Work

flange jockey's pipe welding
Lots of photos and explanations of pipe welding from a professional.

flange jockey's flat welds
Photos and discussion about pipe flange welding.

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Moderators feel free to edit this post to link to further threads.
Sorry, this thread is closed as it's an index thread, but feedback is appreciated about the idea of forum libraries or in the arc sticky thread.