I currently just have an angle ... up metal before welding. So I was thinking of a belt grinder...I am open to other ideas as well. But what is a good piece of equipment to get the job done. I don't think I need anything like the blade smith's use. Thanks Kalamazoo 6" belt sander... More on forum.millerwelds.com

Depends on what you're doing with them really. You can go the expensive route and get some Norton Blaze ceramic grit belts for $10 per belt. Or get some cheap Powertec belts that last half as long, but are 1/5th the price. As far as grits go, I look at it like this: 36 grit - good for removing tons of material, leaves giant, giant marks though. 80 grit - a good point to start when removing material. 120 grit - good for removing a fair amount of metal, leaves a basically acceptable surface finish 400 grit - doesn't remove a ton of metal, but leaves a nice finish. 800-1200 grit - good for final sharpening steps. Micron range - black, green and then white buffing compounds, in order of decreasing roughness - good for mirror polishes. I usually don't go past 400 grit if I am going to use the buffer on something, as higher grits past 400 don't seem to make much if any difference in how long it takes to buff something smooth. More on reddit.com

I sand a LOT of steel with these two: https://www.harborfreight.com/6-in-x-9-in-combination-belt-and-disc-sander-61750.html https://www.harborfreight.com/12-inch-direct-drive-bench-top-disc-sander-43468.html One of the nicer tools that hf sells. Have yet to bog the motor down. More on reddit.com

A 1 or 2 inch wide machine is usually much more versatile. The issue with these machines is that the platen is way wider than the belt, which makes getting clean plunges next to impossible without modifying the machine right off the hop. More on reddit.com