This modified type of fireplace has a lighter and an extinguisher with a maintenance mode. So you can sit back and relax and press a button to light the fireplace and at the same time but also extinguish and bring into maintenance mode to refill the launcher with the fireballs.
Construction should be self-explanatory by the pictures. Under the Nether Stone are the launchers (facing up) and these are filled with fireballs.
In the back:
Good complement 🙂
@Spreidla Thank you 🙂
I was just wondering what else you could do... Mmmh.
Is actually just like the on and off Netherportal.😉