I have been painting the exterior surfaces of the aircraft with PPG DTLF/DP402LF primer and Concept Urethane. Satisfied about the Urethane but the primer is in my opinion not great:
Primer contains a lot of filler and does not crosslink as would be expected from epoxy. It does not sand well even after a few days and can be wiped of with MEK indefinitely. At $ 90 a qrt it is not cheap and I expected something better.
To compare notes I like to add that in the past (long past in South Africa) I started building this RV6 and primed all interior surfaces before riveting with an epoxy primer bought there (don't remember make or spec). This provided a sealed surface that to this day is hard and clean and cannot be removed with solvent.
Painting is just about the most frustrating aspect of this built!!
Comments/advice appreciated
Primer contains a lot of filler and does not crosslink as would be expected from epoxy. It does not sand well even after a few days and can be wiped of with MEK indefinitely. At $ 90 a qrt it is not cheap and I expected something better.
To compare notes I like to add that in the past (long past in South Africa) I started building this RV6 and primed all interior surfaces before riveting with an epoxy primer bought there (don't remember make or spec). This provided a sealed surface that to this day is hard and clean and cannot be removed with solvent.
Painting is just about the most frustrating aspect of this built!!
Comments/advice appreciated