Many who use different brand primers, do this partly because most prefer an enamel primer for weak-adhearing acrylics. Enamels will chemically bond to the styrene, providing tremendously improved adhesion for acrylics. As aposed to acrylic primers that may not bond to the styrene any better than the finishing colors themselves. In this case Tamiya, in particular, do have primers available in spray cans predominatley. While they are very usable, high quality primers for modeling however, availability and price are detracting coniderations. More practical are bottled primers from such brands such as Testors Model Master, Floquil, and few home-store brands. They carry primer in convienent 1/2 oz, and 1 oz bottles. Even spray-can primers from say; Home Depot and other department stores, can be easily decanted into small containers and airbrush color cups, ready to spray without having to thin them. And these inexpensive primers work great for scale models. So there's a little information for you to chew on. Go ahead and grab that $1.99 large spray can of Krylon spray primer, decant it, and spray away to prepare your model for your favorite acrylic paint finishes!
Enamel primers for an acrylic, enamel, or laquer paint finishes...
Greg Williams
Owner/ Manager
Modern Hobbies LLC
Indianapolis, IN.
IPMS #44084