[TheForge] Cast Iron Balls

[Larry Brown]

www.kingmetals.com
item 14-3 ductile iron balls 3", 3.77 lbs, about $8 w/o shipping
If you have a drill press drill a hole as large as you can in something 
clamped to the press. sit the ball in it and drill your tap size. This will 
put you on center. Make sure you get the hole deep enough to have the tap 
cut the threads you need or get a bottoming tap.
Let us know when you make a cannon for the extra balls you order ;-)
L Brown


At 05:40 PM 3/11/2008 -0400, you wrote:
>No joke, I have a project that involves them.  I have been commissioned to 
>make a line of colonial bridge arm lamps.  I can fabricate or source all 
>the parts I need excpet one troublesome little rascal.  It is a cast iron 
>ball about 3" OD, tapped for say 1/4 20F or 1/4 IP.  I have posted a 
>picture in the album titled "Lamp Parts" at the photo access site. It 
>serves as a ballast weight at the base of the lamp No electrical funstion, 
>no structural finction, just dead weight to lower center of gravity and 
>add stabilioty.   Any ideas on a source for a source?
>
>Keziah