Monroe Weathering Washes

[davefoxx]

I noticed this morning that my four bottles of Monroe Weathering Washes all seem to be significantly down on remaining quantity in the containers.  I know those caps are on tight, but I wonder if evaporation of the isopropyl alcohol (IPA) is more the culprit than use.  I do recall that the last time that I used one of them, it did seem like it had really intense color.  Now, I’m wondering if I could just add more 70% IPA to the bottles to refill the evaporation and dilute the wash color.

Thoughts?

DFF

[MK]

Is it water based because there's 30% water in 70% IPA?  Else I would use denature alcohol or 99% IPA.

[peteski]

Yes, the 70% Isopropyl rubbing alcohol it quite weak. Probably not a good idea to use it as solvent.  91% Rubbing alcohol would be better. Personally, when it comes to IPA I use 99% IPA from a hardware store (in the solvents isle, or they can probably special order it fro you if they don't carry it).  I get is in a gallon can. Pricey, but worth it for my uses. It might also come in quarts.  It would be the ideal thing for replenishing the evaportated alcohol in your washes.

I'm not sure if it would be ok to use denaturated alcohol instead.  That is ethanol rather than isopropanol. They are slightly different chemically.

[Dave V]

So, I make my own using weathering powders and alcohol. In Colorado's climate, the alcohol somehow evaporates even with the lids screwed on tight. So, before I go to use them again, I just top them off with fresh isopropyl and go. The powder component should still be present.

[Chris333]

monroemodels@embarqmail.com

http://www.monroemodels.us/weatheringwash.pdf