From: none@none.com99   
      
   On 10/26/2025 4:10 AM, Jim Wilkins wrote:   
   > "Snag"  wrote in message news:10djshq$6v3d$1@dont-email.me...   
   >   
   >    My $30 yard sale bottom pour lead pot drips . A lot . I've cleaned up   
   > the stopper rod with no noticeable slowing . The bottom of the hole has   
   > some crusty rust That I haven't been successful at removing . I see 2   
   > options - try to match the taper of the bottom of the hole (drill bit   
   > isn't the same) with a dowel and lap it clean or try using Evaporust to   
   > clean it up .   
   >    If anybody has other options I'd like to hear 'em . I'd really like   
   > to use this over the dipper and pot , I've started casting balls and   
   > bullets for some of my neighbors and this is faster and less spillage .   
   > Snag   
   > ----------------------------------------------   
   > Hydrochloric / Muriatic / pool cleaning acid dissolves non-oily rust   
   > very quickly, vinegar, Naval Jelly or battery acid more slowly. Baking   
   > or washing soda will stop the action when you see bare metal.   
   >   
   > The stopper could have a similar or the same taper as the hole, perhaps   
   > you could copy it to a D bit? One way is to chuck it on the lathe and   
   > match the compound to the taper angle. For a tapered recess I molded it   
   > in polymer clay, baked it hard and measured the angle, then turned and   
   > hardened a D bit to match.   
   >   
   > I mentioned using a bronze gun bore brush to reduce bolt thread rust   
   > through a hole in the car frame because it worked better than I   
   > expected. I haven't found a source of small straight fine wire bristled   
   > brushes to customize and clean rusty recesses, it was the closest.   
   > Another that helped on my 91 truck's electrical contacts was pipe   
   > cleaners with stiffer bristles, Dill's -Bristle- Premium Pipe Cleaners   
   > in a red sleeve.   
   >   
      
      
   I'll have to go look, but I thought the stopper on the Lee bottom pour   
   pt had a ball nose plunger and tapered cone nozzle.   
      
   --   
   Bob La Londe   
   CNC Molds N Stuff   
      
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