Using metal, how to craft armour to defeat a large bear in my garden?

[SOLVED] Drilling by hand with a corded drill. I have a center punch and a nice new bit, but no room for error - gotta get it right the first time.

Planning to tap the hole after drilling.

Hey guys! I have been really interested in metal work for a while now and I have slowly gathered some tools. So far, I have a Hobart Handler 125EZ, a drill press, forge, anvil, and then various grinders, saws, etc. I have a couple of questions for everyone. The first, what's a good way to practice and self teach welding? The second is how a lot of you make money in this industry? Is it welding repairs, art work, knife making, what brings home the bacon in your shop? Any help is greatly appreciated!

So this thing on Amazon is a clone of Rotablade brand spinners: https://www.amazon.com/gp/product/B06ZYCRGZW/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1

I didn't know about the OG brand when I bought one. Then it shows up with rough edges, sloppy CAD design, and one lobe heavier than the other two. So I could return it, pay shipping, and lose $15 or so. Or... I can learn a bit about metalwork.

My first thought was just to polish all the edges off slowly with steel wool. I would need to cover the bearings somehow. This would take a long, long time, but likely result in a very natural and smooth shape right? Then once all the sloppy cut edges are gone, mark the heavy lobe and remove material with the wool. Then polish it all with 400-800 grit sandpaper and get it super shiny and perfectly balanced.

Or maybe that idea is trash. What would you do?

Can anyone recommend one. Do I just get a specific gun or nozzle for alum oxide? I need to blast 100 grit at around 80 or 90 psi I think for cerakote

Do any of you do this? My dad taught me this, and I have always done it. Now I'm just wondering if it's really necessary.

So what do you do?

It's honestly not to complicated it would be a steel pipe about a foot long with thread's on each end and a flat hex cap on one end and a hex cap that comes to a cone on the exterior with a dimple on the interior both caps would have to come with washers