Some years ago when we first got married and were about to build our first house, I got plans and the arbor setup from some company in Popular Mechanics or some such magazine. The saw ran well, the only problem was that the tabletop was plywood and I didn't make the table slots as accurate as they should have been. A metal tabletop would have been better. The plywood frame was a lot quieter when running that my present all metal saw and stand.
I have seen do-it-yourself kits for making various tools of this sort on the internet! Right now I cannot direct you to them, however.