This post is inspired by the thread, "Lowe's Bargain Table," where dyzzypyxxy posted a couple of photos of holes being cut in a clay pot, using a Dremel tool. What kind of wheel is that? Is there any other appropriate tool to use to cut holes in pots? I have a cordless Dremel, which isn't very powerful; but I suppose it's worth a try.
I've thought orchids could benefit from the light that gets through clear plastic pots, but maybe it's not as beneficial as the aeration through clay. Do you mostly keep your orchids all in clay, dyzzypyxxy? (And pretty much all leaning over, to avoid moisture in the crowns?) And then I've kind of wondered if, even as porous as clay is, there could really be enough air getting through there. Cutting holes in them would certainly obviate that concern. How many holes? Maybe in my dry winter atmosphere (humidity 38-40%) I should do fewer?
On a related note -- I have a couple of glazed ceramic pots that are supposed to have holes draining into a built-in overflow catcher, but don't, because the clay/ceramic seems to have swelled and closed the spots where they're supposed to be. I tried drilling those holes bigger (cement bit), without luck. Possibly I didn't want to apply enough pressure to make progress, because of the risk of shattering the whole thing. They're still useful as weighty holders for plastic liners, but if I could, I'd like to plant directly into them. Anyone have any luck with this kind of problem? (Ironic how you can't drill this material, but drop it on something equally hard - say flagstone or concrete - or even bang a couple pots together, and BAM!)