I've been using selemix 7-610 synthetic top coat satin black.
https://www.promain.co.uk/selemix-7-610-fast-dry-synthetic-topcoat.html
I use only a small quantity at a time & I mix it with 2 pack thinners for spraying. To reduce wastage I've been returning whatever is left in the spray gun into the paint tin. Last time I noticed that the paint is going a bit lumpy in the tin & there was a lot of lumps left in the filter when filling the spray gun.
Could the 2-pack thinners be causing the paint to go lumpy?
https://www.promain.co.uk/selemix-7-610-fast-dry-synthetic-topcoat.html
I use only a small quantity at a time & I mix it with 2 pack thinners for spraying. To reduce wastage I've been returning whatever is left in the spray gun into the paint tin. Last time I noticed that the paint is going a bit lumpy in the tin & there was a lot of lumps left in the filter when filling the spray gun.
Could the 2-pack thinners be causing the paint to go lumpy?