Welcome! Forums General Woodworking Discussions Tools and Tool Maintenance/Restoration Reattaching brass knob to depth adjustment screw -wooden plough plane?

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    I recently found a very nice wooden plow plane which has needed some work. The tool is stamped “A&E Baldwin, New York” with additional initials stamped into the ends H.B.B.
    The wooden screws need cleaning up, I was able to get the nuts off of the screws pull the whole thing apart. The depth gauge mechanism was well rusted, but I have managed to get it apart and get the screw out of the steel housing that fits into a rectangular mortise hole. The steel screw had a brass knob at the top of the tool, but the screw was so rusted that the knob would not turn; it is brass, and it came off the screw. Now that I have the screw and its housing cleaned and working properly, I am trying to figure out how to reattach the brass knob to the top of the screw. There are a couple of slots just below the top of the screw, and I think the knob was originally clamped on to the screw with a couple of wings that fit into the slots — they broke off when I got the knob separated from the screw.
    Any suggestions on reattaching? One thought is to use silver plumbing solder with plenty of flux; I would fill the hole in the brass knob with silver solder paste, heat, and then work the plane (with the screw protruding from its top) onto the brass knob with heated solder and then let it cool. I’m not sure that is the best way, though — any suggestions?


    It’s difficult to say without pictures.
    I wouldn’t use plumbing solder if it means having a big chunk of solder under stress again and again. Its far too soft for that. If there’s a thread or small gap between the brass and steel, solder may work. I guess those wings were forced under pressure to form a friction joint? Perhaps glue (JB Weld/Araldite epoxy) some metal shims where those wings used to be?

    I’d take it along to an engineering company (metal fabrication) and ask them. They can asses the strength it’ll need, they know their metals, and how to affix them. They’ll have specialist adhesives, brazing equipment, 5-tonne presses, and all the brass shims you might need.

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