Cleaning up rusty planes
Posted: Tue Dec 21, 2021 2:52 am
Ive been collecting planes for a while when I see them cheap. The cheaper they are, usually the more rusty they are too. I've found that this isn't usually a deal breaker. The rust on the outsides of the body is easy to remove. I've been using a drill with a 5" disc and rubber backing plate. The finest disc is 120 and it will leave scratches, especially if it's a fresh disc, but it's quick. I took the rust off the sides and sole of the pictured #7 jointer plane (off the ridges at least on the corrugated sole) in 7 1/2 minutes. With the same drill and a stiff wire wheel I cleaned the rust out of the corrugations in another 7-10 minutes.
For the plane iron the back side has to be smooth. The bevel side can be pitted and that doesn't matter. To get rid of the pits I've been using my belt sander turned upside down. A welding magnet makes it easy to hold the iron down onto the sanding belt. With a 240 belt it only usually takes about 2 to 4 minutes to get through any pitting. I still have to lap the backs but that goes fairly quickly with diamond plates. I have one that is around 100 grit to get to flat, then 400 and 600 to get to smooth. I finish off both sides with a felt wheel setup loaded with green honing compound on the home made setup shown in one photo. Green honing compound is 8000 grit.
I can switch the felt wheel with a wire wheel and it takes the rust off of the screws and depth adjuster, etc. Smaller gauge wire works better on the small stuff.
For the plane iron the back side has to be smooth. The bevel side can be pitted and that doesn't matter. To get rid of the pits I've been using my belt sander turned upside down. A welding magnet makes it easy to hold the iron down onto the sanding belt. With a 240 belt it only usually takes about 2 to 4 minutes to get through any pitting. I still have to lap the backs but that goes fairly quickly with diamond plates. I have one that is around 100 grit to get to flat, then 400 and 600 to get to smooth. I finish off both sides with a felt wheel setup loaded with green honing compound on the home made setup shown in one photo. Green honing compound is 8000 grit.
I can switch the felt wheel with a wire wheel and it takes the rust off of the screws and depth adjuster, etc. Smaller gauge wire works better on the small stuff.