Looks nice, thanks for the pics. I'm new to the forum, and have recently purchased a Patriot machine, please don't flame me with negativity digitalmdj, I get it, you dislike shopmaster products. I hope you have luck with your rebuild, sounds like you're making a pretty bad ass machine with ER40 spindles. I'm expecting a decent machine in the Patriot, but it's still a budget machine that I assume I'll need to rework to get better precision. I've bought Chinese tools that I thought were reputable i.e. Jet woodworking tools, and except my wood lathe, I've needed to improve them quite a bit to make them acceptable. Although, at the end of the day (maybe a month or 6) I have a really nice precise tool that was very cheap for what it can do.
My question is, if you're putting ER40 spindles into junk castings, aren't you destined to end up with very expensive junk? Why not throw the whole thing out, save up and buy something else? Or build your own machine out of engine blocks. Really, I know you're heavily invested in your project, but why not scrap the shoptask, and let it go. It's not a wash, you've learned a ton. Anyway, I'm just a NOOB to CNC machining I've only handed over a dwg and collected my beautiful parts. I've done some manual milling, and I love the precision of metal working over woodworking tools.