I can understand that! I've been machining a little longer. Bought my HF 7x10 in 2008, and was puttering along, when and as I could. Didn't get nearly as far as I thought I should, and was griping about it to SWMBO one day in December 2014, and she said I should take a class. The last time I didn't listen to her I spent 10 years, $100K in student loans, all my GI Bill, and three years teaching before crashing that career. So I looked for a class, and found one and enrolled. Started in February 2015, full time, and working full time. After a few months, switched to part time. 2 nights a week, when and as I can. Been going since then, until interrupted by Covid-19. We're going back to class the 17th. Learned a bunch! One of the things I learned was NEVER leave the chuck key in the chuck! Saw that in your video. You should fix that habit before you learn why it's a bad, BAD!!! habit! Got a couple of ideas for you that may help with the heat treating. You can buy fire bricks, and lay them out flat, build a small oven with them, and generally arrange them so you can do some simple heat treating. If you use O-1 tool steel, you can quench in a can of old motor oil, vegetable oil, etc., to get your parts hardened. You need a small bench grinder if you don't have one, to sharpen your own tools, though a small belt sander will do it, too. Maybe easier. A set of diamond hones is a good thing for touching up the edges of your cutting tools, I like the EZE-Lap diamond sharpeners from Amazon. Medium, fine, extra-fine set is about $16-17. And you really need to learn to single-point thread on the the lathe. It opens up so many possibilities for you! An ER-32 collet chuck and a set of ER-32 collets is really handy, too. Like this one, but you can make your own, as well.
https://www.amazon.com/HFS-Collet-Ch...NrPXRydWU&th=1 though you probably want to buy the ER-32 nut. I've got a little more room than you do, so I've been filling it up. Two more lathes, two small milling machines, a metal shaper, three bandsaws, three drill presses, and I can't hardly walk through the area. I'm spending some of the time I'm not hanging out here trying to put things in order there. 16'x21' enclosed back porch. Pretty well stuffed full. I have those fire bricks, myself. Two kinds of propane torch, and an acetelyne Turbo-Torch. I've built a 3/8" propane burner from the design by Michael Porter, and have the stuff to build some larger ones to run a furnace for melting aluminum. I'm gathering materials to make some .32 Long Colt reloading dies, and swaging dies to make my own brass from .32 S&W brass. Also sizing and lubing dies, and expanders and such for .316 boolits for my 91/30 Mosin Nagant. Been sitting here in my bathrobe long enough, gotta get back to work.