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Change to 220, no question.

Maybe he had two pieces. One was 5160, and the other was 5160 too.... :D

They’ll get you in the ballpark, but they’re really no substitute for an actual tester. Mid 50s hrc on a production piece doesn’t surprise me.

Yeah, there shouldn’t be any noticeable play in the bearings themselves, or in the blocks once your shaft is installed into both. Does it change if you take your drive wheel off the shaft? The pulleys, shaft, and drive wheel should look almost like they’re not even moving when they’re up to speed.

The bearings are supposed to be able to pivot axially within the blocks for minor alignment. Once you add the second pillow block, it should eliminate the movement you're seeing.

Is the belt at the same tension for the 5" pulley as the 1-3/4"? Is there any lateral "slop" in the bearings on your motor or pillowblocks? Put a sharpie mark at 12 o'clock on your 5" pulley and your step pulley. Remove the v-belt and the grinding belt from the machine. Does either shaft turn...

I had a 2 day priority package sit in a Jersey distribution center for nearly 3 weeks before it arrived. My understanding is it’s a combination of short staff and high demand.

Oyster bucket?

Exhaust pipe?

Bacon in a cast iron skillet?

John pretty much covered it, but you basically use the corner of your platen to "carve" your plunge line out. It's one of those things that's probably makes more sense when you actually do it. They can be a little tricky to line up on both side, but done well, they look great. Here's a write up...

Looks good! Congrats on the "waffle".

Also check with any local machine and fab shops. A six pack or beer or a can of coffee might go a long way depending on the size of the shop and how busy they are.

Welcome back. Sorry for your loss.

I'm not sure about that emblem, but that looks exactly like a Buck Nighthawk tanto. Haven't seen one of those in years. It's amazing what you can remember when you obsessed over Smokey Mountain Knifeworks catalogs for hours on end, as a kid. Haha.

John pretty much has it covered. It's less about a specific angle, and more about getting things flat. For dovetails, it helps to start out with material that's already flat and relatively parallel. Grind your bolsters at a specific angle, then in order to match the lower piece, you just flip...

Denatured alcohol?

I've bought wheels from OBM in the past, and even more recently from their "diktator" brand, before I was aware of the design theft. They make a decent product (or products) from what I can tell, and seem to get mostly positive reviews on their products and customer service. It also looks like...

Diktator is part of the OBM (Origin Blade Maker) brand. Personally, I'd steer clear, as they've been intentionally copying other maker's grinder designs to sell as their own, without giving any credit to the original designers. In at least one instance, they were specifically asked NOT to use...

I should have clarified. I always temper the blade and spring together in my tempering oven (usually around 400F or so) for at least 2 cycles, and then the back spring gets a final spring temper with the torch.