is there a clearcoat made that i can mix into say a Tremclad type rust paint to make it more durable and resist harsh elements better .
i was also thinking some urethane varnish mixed in some tremclad ??Not sure but I use to put old acrylic enamel or Urethane hardner in Rustolium to make it dry faster and hold up longer to the elements.
I painted my railings with Rustoleum and didn't want to wait 2 days so that was the 1st time I did the hardener trick. Then my blue cabinets to red next.I’ve mixed the hardner from tractor supply with oil based and automotive enamels with success. Dry time is less than half and hardness has gone up quite a bit.