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It's been 20+ years since I last used a small angle grinder for small welding jobs. I'm looking to buy one for occasional DIY, but see a wide range of power specs, and a pretty wide range of prices too. My main use is small welding jobs (furniture, repairing a fence, etc) and removing rust before painting, e.g. a metal fence. Any advice would be appreciated!
Size: 115 (4.5") vs 125 mm (5") seems like a small difference, but even a single manufacturer (Bosch) offers a bunch of versions in each size. Does it matter? Are disks more readily available in one of those sizes?
Power/amps: how much do I need?
Variable speed: how useful is this feature? Saw some claims that running at low speed can lead to burnout due to insufficient cooling? Intuitively, I like the idea of being able to drop the speed down for say removing rust, but maybe it's not necessary?
Anything else to look for?