If you are painting a residence the chances are your enamel is a water borne acrylic enamel. Conversely, if you are referring to acrylic and enamel spray cans then the answer is yes you can spray one to another without any problems. Always be sure your paint is completely dry before applying successive coats.
It will not last very long. Much better to use a full enamel spray or an epoxy base.
Latex paint will go over WD40 but will not adhere. I work at paint stores and we spray our mixing tables with WD40 so that the paint cans will slide easily and any spilled or splashed paint will peel off if dried.
Enamel in the spray can will not dissolve an existing coat of the same paint. There is something else going on there. Double check the can(s) to be sure you are using the same product. It sound like you applied something other than enamel to the existing surface.
Yes you can.
You can't. Prime over it with a good primer.
you dont..... you can by a paint product such as " Zinser " or " Kilz" to spray to block it from coming through your drywall. it comes in a spraybomb or gallon.
You should be able to use a gravity feed HVLP spray gun to spray latex paint as long as the volume is at least 12 CFM. Check the paint's data sheet to determine the proper thinning required.
Perfect surface preparation and spray application.
Tremclad makes it in regular paint or spray. The spray is better, especially if sprayed over a flat white primer they also make.
Yes, it is.
It is generally not recommended to spray Krylon H20 latex paint over acrylic spray paint, as the two types of paint may not adhere well to each other. It is best to stick with the same type of paint for optimal results.