Helm deep from the lord of the ring

Now that we have the base ready, we can move on to the next step, which is to transfer the map from our mind to the base.
In this case the helm’s deep is made up of four main structures, circular outer walls, curved outer walls, circular inner walls that support the actual entrance to the helm’s deep and a high tower beside the circular structures.

The whole structure is surrounded by mountains on three sides, so this must be taken into account in this phase, when the map is transcribed on the base.
Let’s start with the curved outer wall. It may seem complicated to make a defense wall that is symmetrically curved, in reality the solution is simpler than what you think. It is sufficient to draw a curve that reminds you enough of that of the external wall, now decide how thick the masonry must be, in my case 6 cm, and make a cylinder of the size of your choice from a wooden or plastic rod.

Once the cylinder is obtained, pass it in correspondence with the curve you have drawn, pressing enough to leave a curved strip on the polystyrene. In this way you have created the track to follow for the construction of the curved masonry.

For the realization of the circular traces of the external and internal walls I made a compass using a pencil and a cord, in this way I was able to trace perfect semicircles even with a very large diameter.

Once the center of your circular structures has been established, just point the string at that point and stretch it until the pencil cannot go further, at which point, keeping the string in tension, trace the semicircles. Determine the measurements of your masonry in advance using knots on the rope at precise distances.

I have not yet addressed the tower as a problem, but on the map I have marked out what its position could be roughly, so as not to occupy its space later.
Finally, before giving you all the measurements, it is right to reserve a space for the protagonists of the project: the bricks!

they are made thanks to a proxxon hot wire, they measure 2x1x0.5 cm, they are of the same polystyrene used for the base. with the bricks I will make all the main structures, except for a few cases that I will point out anyway.

let’s quickly see the various measures:
– external circular wall external diameter: 68 cm
– internal diameter of the external circular wall: 50 cm
– internal circular wall diameter: 32 cm
– distance between the walls of the curved masonry: 6 cm
– total thickness of curved masonry: 8 cm