How, and/or with what, do you cut a bowling ball in half? I've got
That's a good question. I know we covered pitch bowls in a simpler
fashion that I will share which some may find useful.
1) Get a dirt chep metal mixing bowl.
2) On your sand bag or what have you with a rounded out stick or how
ever else you wish to do it, pound out the bottom to make it rounded.
3) Get some scrap pieces of steel, be it large nuts or bolts. I had a
thick rod I wasn't going to be using any time soon so I choped that
up and filled the bowl a third full.
4) I went to the hardware store and picked up an spare Bar-b-cue
wheel and peel off the tire to use as my pitch bowl base.
5) From a second hand store I found a crock pot so I ground off the
keyed lip, but if you find just a cooking pot then you're good.
6) On a dedicated heating element at medium heat in a well ventilated
room (I maybe should have done this outside) I brought tar to a
liquid consistensy... I broke off chunks from a larger piece using a
scrap piece of sheet steel and a five pound sledge.
7) Slowly I added Plaster of Paris, mixing/stiring it with a stick
until the pitch turned to a velvety plastic looking mixture. It took
a surprisingly large quantity, maybe 4 cups for a 3/4 full pot.
8) Fill the bowl like it was pudding.
9) Have a torcb about to heat the surface while it cool as you want
to work out any bubbles that rise so the surface is nice and flat and
doesn't have any air pockets.
Note: Don't catch you pitch on fire or it will become brittle and
loose the properties you need it for. Melt, skim off, heat surface to
make it flat and work out air pockets.
K. David Woolley