Mortar Boxes
What is a mortar box?
A mortar box is a box you’re going to fill with mortars. 🙂
Each box consists of two long sides and two short sides, which form a frame with no top or bottom when assembled. These wooden frames are assembled using metal rods, washers, and cotter pins, and then filled with sand.
These boxes are usually only used on the 4th when there are simply not enough racks to go around. Sandboxes take much longer to fill than it takes to cleat an equivalent number of racks.
If you are shooting out of steel tubes, they must be buried 2/3 of their length in case of tube fragmentation, which can be accomplished with a mortar box or by putting them in the ground.
How do you assemble a mortar box?
Very simply actually. Take the two small sides, or ends, and slide them in place between the two long sides.
There are six holes for the rods which hold the boxes together. Insert a rod through both sides, put washers on both sides of the rod on the outside of the box, and secure using the cotter pins. Watch the video explanation of mortar box assembly.
