Boy Tom, Ya had me worried there for a moment(LOL). Thought I was reading the first complaint I have ever had on the distributors for a breif second. As Mike said, no primer is needed. If it does make ya feel better to use primer though, I would go with something thin. Good ole Tamiya white primer would be my first choice. Please also note that we do not use any messy release agents. making prep even easier. Just a quick scrub with dish soap and, warm water is all that is needed. Please avoid using too hot of water as hot water could cause the base to warp a bit.