First off, this is not a bug, but rather a general use/compatibility question.

I’m starting work on a friend’s Factions server. We want to let players use the printer, but not a certain times (if someone is blowing up their walls we want to disable printer via permissions and worldguard regions).

Using the SchematicaPlugin you can allow/deny printer via bungee, but afaik Schematica only checks that when the player joins. Before I spend too much time chasing my own tail, is it possible to enable/disable printer on the fly via a Bukkit plugin? If so, do you have any tips on how to achieve it?

Thanks!

As far as I can tell there aren't any restrictions on when you can send MessageCapabilities (the permissions message), so you should be able to send it at any time and change the current permissions (and things will enable/disable as needed). Here's how schematicaplugin formats it.

There probably isn't an existing way of doing it, but I think it'd be entirely possible to implement it.

I haven't tested it, but the way it's coded right now it should allow you to change it on the fly, assuming that a plugin like that exists. The only thing that might not get instantly disabled in the printer if it's already running.