Foundry that spawns mobs nonstop?

[ProChargedLS2]

I am looking for a foundry that spawns mobs non stop, one like super wisp grind but I need it to give experience.

[onedoesnotsimply]

I don't check in much these days since nothing is really contributed or it all goes to private where I can't see it. As far as I know this is not possible. The mobs that are spawned infinitely by the wights give no exp.

[Alan1234]

ok...........................................