Those taper bearings need to have the correct clearance to allow them to float. The surfaces need to be good enough to maintain the oil film.(not damaged) and the oil reservoir needs to deliver the correct grade oil.
Have you correctly tightened it up. Just shooting the breeze. No idea how it's done but I did swap a belt on one years ago which involved removing the spindle.
In the eighties and nineties there was a bit of a boom in wood books many very project led. The guild of master craftsmen were ahead of the game in helping craftsmen get published. Unfortuneatly many were rather pulpy. And trying to transfer your design into an understandable format for the...
Please don't be discouraged by anything we suggest. People bring there own prejudices to these posts. I personally love books and hate youtube simply because everyone's a personality but the information presented is equally valid but often in short form. 1275gt linked me to old Jim kingshott...
I'm guessing here but power will be an issue spraying anything thicker than milk(water base)! Primer is particularly thick. Being honest I'd just brush paint. Topcoat can just about be sprayed with a 5 stage hvlp 1.8 needle but you need to buy industrial stuff that hasn't had thickener added...
Humanity is making things and it has been that way for thousands of years. It's a bit like the primeval pleasure from a fire. But let's not kid ourselves it's not going to pay.....ever. I think I must have been the oddest child always making things. It's possibly a life skill in emerging...
The only method that lasts a bit longer I'm aware of is preserver, clear penetrating epoxy sealer then le tonkinois et al. Yacht style.even epifanes. This will last longest 100%
Ps I'm not trying to lead you from your ideas just suggesting how they may be conventionalised resulting in that joint being made redundant with four woodscrews and a drill larger than the screws shank.