[Syrupmakers] Cane mill bearings

Sun Feb 17 10:33:59 PST 2008

I think I've heard of drilling the cracks and forgot until  you said that. I 
did heat it (not red hot) then welded it. Then I  covered it with dry sand to 
hold in the heat. 

JT

In a message dated 2/17/2008 11:09:56 A.M. Central Standard Time,  
pastmaster123 at yahoo.com writes:

JT, 

There was a man by the name of Morgan South of Perry that told me  how he 
welded or brazed cast iron.  He has welded or brazed a lot of  kettles and other 
cast iron parts and such and that I know of, and never  had any come apart.  

If he was repairing a kettle, he would find the end of the crack, drill a  
hole in it to stop the crack from running.  He would grind a grove in the  
crack, build a fire under the cast iron until it was red hot and then  weld or 
braze it.  He would then let the fire burn out. 

He said the trick was to heat it hot, do your work and let the iron cool  
slowly on it's own.  He passed away a few years ago and a lot of his  little 
tricks passed with him.

Bill Gunter
Perry, Florida

DBACrownhoney at aol.com wrote:

Ya, I tried preheating it. I used a big propane weed burner torch. It  got it 
pretty hot. I think if it brakes all it will do is allow the juice to  get in 
the bearing box. If that happens I think I can JB WELD  it enough to keep the 
juice out. 
 As for the zinc. I haven't used it before, but there was a guy in  N. or S. 
Carolina making bearings for Chattanooga 12's and he's the one that  told me 
about it. He said his have lasted a few years so far. I also  researched it and 
found a lot, much more severe, applications that it's used  in. 
I plan on putting the mill back together today, I'll post some more  pics.

JT

In a message dated 2/17/2008 2:44:48 A.M. Central Standard Time,  
rharrison922 at yahoo.com writes:

J T,
   The photos look nice to me. As for welding cast iron, I  hear that it 
needs to be preheated to work best. Nice looking bearings!  have you used 
zinc/aluminum alloy before for bearing use ? Will it stand  pressure ?
                                                       Richard

DBACrownhoney at aol.com wrote:

Hey ya'll  sorry it took so long but here are some pics of the zinc/aluminum  
bearings I've been talking about. These are for a Chattanooga 13. The 2  
piece bearing was cast in sand. The other one I poured directly  into  the cup and 
used a piece of spray paint can to form the  socket for the shaft to fit 
into. I also left about 1/4" of the bearing  material on the bottom of the cups so 
the shaft wasn't  rubbing right on the cast iron. I don't  think I'll ever  
have to replace them. 
Now I  have a question. I think in the past someone took this mill apart and  
when they  took the top off they let the large  roller fall over and cracked 
the rim around the hole. I welded  on the cracks  directly behind the shaft 
were the most pressure  will be. I know it's a poor excuse for a welding job but 
welding  the cast iron is a lot different than steel. It's hard to hold an 
arc.  Anyway, just wondering what ya'll think  about it. The cracks  don't go 
into the main plate just that rim. Think it'll hold  up?

Here's the  link to the pictures: 
_http://s258.photobucket.com/albums/hh267/Crownhoney/_ 
(http://s258.photobucket.com/albums/hh267/Crownhoney/) 

JT

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