D3 Traps Each trap door is base up of the parts above. We recommend sanding the acrylic parts lightly before painting if possible. It is also easier to part these parts separately before gluing . There will also be a protective backer paper on these acrylic parts. Make sure to remove it before painting and gluing. Glue stone ring on top of trap door. Spike traps begin with the part. Glue 12 spikes into each of the 12 slots in the base. Glue stone ring on top of the spike plate.