Primer

i'm not paint expert but I think any type primer as that still needs a sealer. the DTM I figure is an epoxy and when you read the info it will state mix the reducer with it when usin it as sealer. like he said its very thick, I don't think the brand I have is good for sandin. experts wuill probably tell you to use K2 sanding primer over the DTM????? the K2's are thick and fill well. again. the more knowledge need to tell ya if i'm correct.......