Simple Large Furnace Room.

[Granny]

I thought that some of our players on our Pure servers might like to see an inexpensive, and simple way to secure a large furnace. 
The important thing to note is the first three steps. If you don't follow them, you might find it tricky to place your furnace.

You will need the following:

Building plan.
Building hammer.

2k or so wood.
A TC (Unless you intend to connect it via foundations to your base.)
A door and lock.
A large Furnace.
6 triangle metal floor grates.

I highly suggest you upgrade to a minimum of wood, however, the materials for upgrading are not listed here.
Once you have built it, a simple way to get to the hard to reach spots for upgrading is with a twig scaffolding, or ladders on the exterior of your building. Both of which can be easily removed after.

So, without any extra chit chat from me....