Burdekin
Chief Bodger
- Messages
- 6,643
- Location
- Aberdeen
I’m a fan of Jotamastic but spraying it you’ll get orange peel as it is a thick high build primer. I use 80 as I find it sprays the easiest, lays the flattest and just apply an extra layer. Automotive epoxies will lay flat if you spray them properly so for places like engine bays you could apply a good automotive epoxy and then topcoat directly without sanding but if spraying Jotamastic you will need to sand it flat. Jotamastic is very surface tolerant so is a good first layer and is how I use it. Whack it on, flat, fill/high build if needed and then seal with an automotive epoxy. I really like the Mipa epoxy, it sprays lovely and is easy to sand.How well does this jotamastic spray?
Just looked at the data sheet for jotamastic 90a winter grade, I will be doing it in January with small heaters on so likely around 12c no hotter.
According to the data it needs a pressure pot at 2100 psi?! I will be brushing underneath but all the engine bay, interior, exterior needs to have a good primer finish to save hundreds of hours sanding brush marks! I have a 1.8 hvlp gravity fed gun....