More work, 4 of these turrets to build, 2 are the same, the others differ slightly.
The pictures show the process.
The polycarbonate block supplied to me By Tony B is fill od little cuts, so I cast about for an alternative, don't throw those CDs or DVDs away, they are made of polycarbonate and are ideal fro cutting etched parts on.
You will also see my trusty etched bending tool, a great buy and worth it to get nice square corners, like on the ladders.
The first photo shows the catapult supplied in the kit and the etched replacement.
The last photo shows the turret with all the bits added.