Ammo Mig Jimenez A.MIG-2039 Acrylic Type Arming Putty.
Acrylic putty specially designed to cover joints and defects on your models. It can be diluted or cleaned with water before drying and is very easy to apply with a brush. After drying for 24 hours, it can be sanded to obtain a smooth and very resistant surface ready for engraving and painting.