Ok so this is pretty much completely random and off topic, but I thought I'd share anyway. I love tools, and plenty of my hobbies include using them. So this weekend Canadian Tire had their Mastercraft arc welder on sale for $85 - it's often on sale for $100, and the regular price is $199.
I got it for $85. Sweet deal! I would have paid $200 for it. I have only ever welded with oxygen + acetylene before. This is much easier once you get the hang of it. I haven't made anything yet, just fusing some scraps together... but I found it easy to strike an arc, get a nice straight uniform bead, and buff it to look pretty good.
It runs on a standard 15 amp receptacle, or a 20 for the high setting.
I can see numerous uses for a welder in arcade machine building - corner protectors, metal control panels, marquee brackets etc.