I discovered that 400-grit sandpaper wasn't the ultimate edge for a plane iron so I bought two stones at the same time I ordered the Chisel/Plane Iron guide. The first stone is 400/1000-grit so it's a bit redundant.
The second stone is almost silly, with 3000/8000-grit surfaces.
I didn't follow instructions setting the plane iron angle. I used a magnetic angle finder typically used to set pinion angles in automotive drivelines. I did check the countertop to be sure it was level (0-degrees).
I was pleased with the results of the second sharpening but I don't think I got the perfect burr on the edge. This is my first time sharpening anything with this much precision so future attempts may be better. The 25- and 30-degree edges are pretty obvious.
I was a little worried about the rabbet plane because the blade is an odd shape and much narrower. I used the chisel holder position on the guide and it worked just fine. This is the 25-degree edge and the rest of the process was just a repeat performance.
I re-assembled the planes and tested them on a piece from a split 1"x6". They both performed better than I expected and I was able to get almost transparent curls of wood shavings.
I gave the wooden handles a couple of coats of Tung Oil but it wasn't quite dry when I was ready to test the plane. The Waltham plane is a crude version of a Stanley plane, with stamped steel rather than cast iron parts and the sides of the plane are rough cast and coarse ground (I did a little sanding but didn't try to make it look machined). I have the depth stop for the Stanley Rabbet plane but I can't find the side guide. I found a new one on Amazon for around $20 so that will almost finish it off. I may yet find the knurled knob or thumbscrew for the depth stop but if not, I can make one from a 10-32 screw. I think the Made in England Stanley planes use a different thread. I did find some thumbscrews for a Stanley No. 78 on eBay but the sellers seem to think they are worth $25 or more.
I don't plan to paint the planes because the wear and tear is OK with me. I don't want them too fancy to use. Here's the Waltham with knob and handle installed.