Non-caustic-activated strippers are unsurpassed in performance on clear finishes while still offering good removal of most paints (product: M-36).
Caustic-activated strippers are often preferred for painted pieces because of their aggressiveness on most paints. While not as effective on clear finishes as non-caustic-activated strippers, the caustic-activated stripper still provides good removal of clear finishes (product: F-14). NOTE: Caustic-activated strippers will sometimes darken wood and have "fallout" (salts that precipitate out of solution) – F-14 has a special blend of activators that minimize these issues.
"Milk-based", "buttermilk", lead-based paints and pieces with multiple layers of paint are all best removed by "hot tank removers" (caustic soda beads mixed with warm water). However, this stripper will darken wood and is best used with pieces that will be painted again (product: C-41).
Methylene Chloride-based strippers (MC) have optimal performance when the chemical is at 70 degrees F (balancing aggressiveness with minimized evaporation). Use of heat belts with thermometers is highly recommended in cool or cold weather, but do not overheat because it will "cook off" the solvents.
MC-based strippers are typically 20 degrees F cooler than their surrounding environment. Store off of concrete floors (set on pallets or slats).
There is an approximately 50% drop in stripper cutting ability when MC-based strippers are at 60 degrees F.
Stir all strippers before each use. Rolling or shaking is not advisable or effective. Use a broom handle or similar item.
Non-caustic-activated strippers will be less aggressive in cool temperatures than caustic-activated strippers. However, when warmed back up, they rebound to original strength better than those with caustic activators.
For especially challenging finishes, plastic wrap or wax paper placed over the stripper can be used to prolong cutting time of stripper by slowing evaporation.
Another option is to apply a good, wet coat of Crackle Lacquer to tough finishes (e.g. pre-cat’s.) and then apply the stripper after the finish is broken up…this allows the stripper to penetrate and lift the finish.
