| I'm happy that you're trying mounted orchids (they're fun) but I'm afraid I have some bad news for you. Cattleya amethystoglossa is one of the largest cattleyas there are. Mature, flowering plants are around 3 feet tall. Growing a plant of this size on amount will be a challenge. I've only ever seen this species grown in a pot. Eventually you will probably have to move this little guy to a pot. Also, if your plant fits neatly on a 8x2-inch slab, it's most likely a seedling and it will be many years (maybe 3-5 depending on its current size) before it is mature enough to bloom for you.
Regarding "remounting," I never remove a plant form a mount. Doing so damages many roots. What I do is "mount it up." I take a larger mount of a similar material and affix the current mount to it. The plant just spreads out onto the new mount. In the case of tree fern mounts, I cut a place in the new mount in which I fit the old mount (plant still attached). After a while you can hardly tell there was even an old mount there.
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