TCP states not to use acetone for a thinner as it will change the paint properties. I'll trust them on that one. I use mr color leveling thinner or denatured alcohol and those seem to work well.
I'm not arguing your statement Freddy, but on the recent Rock Island U33B's and GP35's I just finished, I used straight Acetone to thin the paint this time and I did not see one issue with it. It mixed and sprayed on just like it did when I used their thinner. In cases like this, I recall when I was younger I questioned Dad's advice of using an ACDelco oil filter in my 74' Ford Maverick when it called for a Fram. Sometimes there IS a reason, sometimes they just want you to THINK there is a reason. Just saying...
I get your take. If it doesn't change the paint properties then I'd be likely to try it myself. I've used it to "etch" plastics as a prep when I know the paint would not adhere well otherwise.
Polystyrene for sure but if it evaporates quickly then it has little time to interact with it. TCP uses it in their paints and I've yet to see any ill effects from using it.
Seconding Mr. Color Leveling Thinner. Much cheaper than the TCP thinner, and it produces a mirror-perfect gloss.
I have decided to revisit the Tru-Color Camp. With Scalecote going away, options are getting limited for RR model paint. His paint colors are spot on for colors. I do know for fact that BNSF Grinstein Green and Creme are perfect matches. I(meaning a friend Jim Cunningham loaned me his actual paint chips)and sent to RickG actual paint chips from an SD70MAC to color match the paint. I may start heavy drinking, but here goes....
Tru-Color: SP&S Yellow TCP-048 Tru-Color: High Gloss Silver TCP-533 Tru-Color: Light Primer TCP-256 (underneath) Will give a day to dry thoughly, as I am outta time for today. I have always loved how it lays down. Now to see if it sticks EveryWhereWest Model Painting
Tru-Color Brunswick Green TCP-075 Tru-Color High Gloss Silver TCP-533 Tru-Color Light Primer TCP-256(underneath) EveryWhereWest Model Painting