In a message dated 2008/05/17, gel@................. writes:

> I will use 2 crossed hardened dowel pins on the vertical post.
> Gary Lindgren

Hi Gary,

       Unless they are carbide or stainless steel they won't last long. You 
get surface corrosion actively promoted between dry rolling surfaces. And I 
would advise against using oil. It doesn't last long and the bearings tend to 
slip out of position.

        You can get polished stainless type 415 shoulder bolts from McMaster 
Carr. http://www.mcmaster.com/ I think that John Cole uses these.

       Regards,

       Chris Chapman
   
In a me=
ssage dated 2008/05/17, gel@................. writes:



I will use 2 crossed hardened d=
owel pins on the vertical post.

Gary Lindgren




Hi Gary,



       Unless they are carbide or stainless st=
eel they won't last long. You get surface corrosion actively promoted betwee=
n dry rolling surfaces. And I would advise against using oil. It doesn't las=
t long and the bearings tend to slip out of position.



        You can get polished stainless ty=
pe 415 shoulder bolts from McMaster Carr. http://www.mcmaster.com/ I think t=
hat John Cole uses these.



       Regards,



       Chris Chapman