I looked in the forum but didn't see this subject listed; that said, I'm sure it's been discussed, but I must've not used search terms that got results. Therefore instead of answering again if you just want to share a link to the right discussion, I'm perfectly fine researching further. (Well, I have yet to ask Google, but figured starting here first is best.)
Has anyone had success removing orchids from their mounts (such as when purchased mounted) for transplanting into a terrarium? Given how many are sold mounted in the first place - minis, at least - I'm assuming that's what's happening when people are using them in terraria. I have some minis on pressed-cork and a couple on treefern fiber slabs. I'm concerned about tearing apart too many roots, even taking my time and being as delicate as possible. Would making sure it's well-soaked first help? When I've teased roots out of potting medium for potted orchids, when they're grown through chunks of fir bark or coconut husk, wetting first seems to help. Or, can/does one instead delicately excise part of the mounting medium to preserve the roots that won't come off easily?
I also have a Pleur. grobyi "ball" (mount that's now been completely covered all around) that I want to divide, and since it's on treefern, whatever technique works for the above is what I'll try for that.