Rube Goldberg would be proud.
Some of you youngsters may not know about old Rube. He was inventor, engineer, artist, and cartoonist who drew newspaper cartoons back in the 1950's and 60's, with fanciful and complicated contraptions to do simple tasks.
Anyway, I recently had a casting session in which I cast about two hundred .575 balls. I had some pretty good ones, but a lot of them had wrinkles.
I'd once read a post about putting cast balls in a vibratory case cleaner without polishing media to smooth them out. I tried it once and that didn't work out for me, at least not in my Midway case vibrator.
I figured something like an old fashion barrel tumbler would work better, but I don't have one. So I searched through the accumulation of useless stuff in my combination boat shed & shop and came up with an old
barbecue pit rotisserie motor, the
drive pulley from a clothes dryer, some little
1" casters (saved from some long ago thrown away furniture?) and some
scrap wood.
Putting them all together, I came up with the contraption in the pictures below.
I used a Pyrodex jug for the drum and the leg from some panty hose for the drive belt. (No, not
my panty hose - you big silly.)
In my first attempt to tumble some balls I found the drive belt would just slide around the smooth surface of the Pyrodex jug. So I hot-glued a strip of sandpaper around the jug. No other glue that I had would stick to the plastic jug.
In my second attempt, I found the balls would just roll around without the tumbling action needed, so I modified the jug by hot gluing eight strips of thick plastic (cut from a 55 gallon plastic drum) to the inside of the jug.
The third attempt was a
success. I put 50 balls in the marvelous magical machine for about an hour, and was rewarded with nice round smooth balls that "almost" look like commercial swagged balls, except you can still see a little dimple where the sprue was.
I don't know that they will shoot any better than the ones with wrinkles - probably not. But they look better to me, and anyway I had fun with the project.
So, if you want to see the Rube Goldberg Ball Tumbler in action, take a look at the video below (which may or may not work).
I ended up tumbling all 200 balls in 50-ball batches, and that panty hose drive belt is getting pretty frazzled and is about to break.
http://s210.photobucket.com/albums/b...urrent=010.mp4
Dirt Cheap Ball Tumbler
