Roy
I will add my 2 cents worth.
I use either hydroton or prim-agra. Some people prefer prim-agra but I can get hydroton locally. I don't like to pay to ship rocks. When I need to repot, I boil the old medium, using a bit of physan 20, to make sure they are safe to reuse. I have even used regular bleach. After it is clean, I let them dry and then just dump them into a plastic container. When I want to reuse it, I soak it for several hours or overnight with KLN. I have both paphs and phrags in it and they do just great. The phrags especially love the S/H method. I do have a handful of other orchids in it also. I have been using this method for almost 2 years.
The very large pots (8 inch) I buy from First Ray but the smaller ones I make myself. I use either the plastic cups I get at Costco or what I find at a store that sells the 1 quart deli containers. In a pinch I have asked for a couple from the deli in the grocery store. They always sell me a few at a cheap price. I try to find the clear plastic cups that rather thick.
I use an electric drill to put the holes in. I found a bit which makes perfectly round holes at Lowes , but that really isn't necessary, a regualr bit works also. I just like my holes to be round......I'm just a fussy old lady I guess.
Some of my in bloom slippers are pictured in the thread 'Orchid Jungle'. You can see that they bloom well for me in S/H.
Grandma