Reddit reviews Hitachi G12SR3 4-1/2-Inch Angle Grinder (Discontinued by manufacturer)
We found 2 Reddit comments about Hitachi G12SR3 4-1/2-Inch Angle Grinder (Discontinued by manufacturer). Here are the top ones, ranked by their Reddit score.
Hitachi Power Tools has renamed to Metabo HPT. Same great tools, with only a new name.Removable, forward-canted side handle for improved control and comfort for right and left-handed users6 Amp motor with 400W of output power for tough grinding jobsTrigger lock-on for comfortable, continuous operationExtended life auto-stop carbon brushes for added motor durabilityCompact and lightweight at 3.1lbs for greater control and maneuverability, especially in overhead application
For that kind of cutting, you should use an angle grinder.
L brackets are usually made from galvanized (zinc-dipped) mild steel. Note that burning, cutting, or welding galvanized metals without a respirator and adequate ventilation is a bad idea.
First, scuff-sand the brackets. Spray with primer, wait for it to dry, spray with paint, wait for it to dry, spray with clear-coat.
I can tell that you're putting the spray paint on a bit too heavily. See how the primer is visible at the edges? That's because the paint is too liquid, and is pooling. Back off to 8-10". Spray paint should settle into place as particles, not be blasted on in a heavy liquid. Multiple light coats are better than 1-2 heavy coats.
Also, wrap the screw & bolt threads with blue painter's tape before priming & painting.
http://www.amazon.com/Hitachi-G12SR3-2-Inch-Angle-Grinder/dp/B000ULQVCU