Replies

1. 
   esch5995 | Jan 20, 2022 04:22pm | #1

   There are a few tricks that I have used to free rusted fasteners.

   The old standby is heat, an open flame from a torch is effective but the most risky and can only be used if the knobs are metal. If they are chromed it may still damage the finish.

   A heat gun or heavy-duty hairdryer can also sometimes provide enough heat in a safer fashion, just be careful of any plastic.

   The last option is a vibrator. If you have a heavy-duty vibrator like those used for back and muscle pain(not that kind) I have used it to loosen rusted knobs like this in the past. The vibrations seem to be able to break the rust free. If you don't have a vibrator try an oscillating tool with the sanding pad and no paper that might work as well. You may need a little extra leverage. A large plumbers strap wrench could be helpful if you have one without damaging the finish. Channel locks or a pipe wrench would work if that is all you have but they will cause damage and a pipe wrench should be used with care it could provide too much torque and cause serious damage.

   Good luck

2. 
   mikeinohio | Jan 20, 2022 08:44pm | #2

   Be patient. Penetrating oil can take time to work its' magic.

   Try laying the saw on the floor in a manner to encourage the penetrant to flow into the target area. This might mean tackling one knob at a time. Add a few drops every few hours and expect it to take overnight to work.

   Mike

3. 
   Tireswingbbq | Jan 21, 2022 04:05pm | #3

   Success! With your helpful tips, I have managed to free up both locking knobs, but I broke a screw in the riser knob. See the pic attached. There is just enough of this broken screw sticking out of the wheel, I might be able to extract it without drilling.

   What does this screw accomplish? Do I really need it?

   Anyhoo, thanks again for heppin' out. Much appreciated.

   -George

   
4. 
   Deleted | Jan 21, 2022 04:09pm | #4

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