Hi Kittyzee!
If the orchid is already mounted, I simply hang them off the metal parts of the hanging planter.
(Most mounted orchids have a built in hook for hanging)
If it's not mounted yet, I use sheets of coco fiber, and cut them into approx. 6 x 6" squares.
Then I cut an X into the center of the squares. (the cuts should be about 2-3" long)
Then I gently guide the roots of the orchid through the X opening, spread the roots out,
and slide the twosome between the metal planter and the existing coco liner.
Here's a typical hanging pot I found on eBay to use as an example...
Then I gently ease the foliage and crown through the metal lattice.
You can do this even when the planter is already planted, a bit more tedious to do, but best to do when repotting and mounting a few orchids.
Sometimes, when all is said and done, the mounted orchids are still a bit floppy, so I use twist ties, hemp twine, hair clips and even rubber bands to keep them firmly in place while they are getting themselves rooted in. Hemp twine looks the best, and you can just leave it there. I also throw a wisp of spanish moss over the top of each mounted orchid, cuz not only does it look nice, but it conceals any twist ties, rubber bands, hairclips, etc. And the spanish moss helps retain some moisture/humidity when you hose down the orchids.
I have one hanging planter that has at least 6 orchids in it...3 inside the planter and 3 on the outside.
It can EASILY accomodate at least a dozen more orchids...I just need to find MORE.
I am just cutting WAYYYY back on buying more plants because we will be moving at the end of May.
It's getting harder and harder not to!
By the way, the best place to put these hanging orchid pots in the summer is outside, hanging from a tree.
The tree will shade the orchid just right, and when it rains, your orchids will LOVE the rainwater.
What your orchid will NOT like is being hung some place where it wont get any rain.
And if you can get a pitcher of pond water and pour that over the orchid, it will love it too!
Oh, and about these types of hanging pots, the big heavy ornate expensive ones really aren't worth it cuz the orchids obscure all the pretty stuff.
What you do need to look for are sturdy ones, with nice big chains (not wimpy that wont be able to handle a heavy load when or will rust and then break)
or even better, no chain but a rigid hanging wire frame.