Last December I contacted 3M's Automotive Market Division. Here's a composite of the two communications I received:
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"The 3M™ Acryl-Blue Glazing Putty, 05964 is no longer
available. The
suggested replacement is the 3M™ Acryl-Marine Putty, 05962 White. This is
the old 21 oz. tube and we have inventory. Eventually the 21 oz tube 05962
will be phased out and be replaced by 05095 in the 14.5 oz. tube.
"The 3M™ Acryl-Marine Putty is the same formula as the 3M™ Acryl-Blue
Glazing Putty except that it does not have the blue colorant
"Napa or Carquest in you area should have these products.
"Sincerely
"Clauzel G.
"3M Automotive Aftermarket Division"
"These products vary widely depending on temperature and
thickness of
application. Because they cure by solvent evaporation, a small difference
in applied thickness or temperature can cause a multi-hour shift in sand
time. Here are some VERY ROUGH estimates of sand times for the Acryl
putties (all at 72 deg F):
3M™ Acryl-Green Spot Putty, PN 05960: A truly "spot-only" putty, this
one
cures the fastest and will not work for spreading over large areas. To be
used only for small spot repairs. In a thin film, this should be sandable
in about 15 minutes. In a thicker film, could be 30 minutes or longer.
"3M™ Acryl Red Glazing Putty, PN 05966 ,and 3M™ Super Red Putty, PN 05972:
Both similar in sand times. In a thin film, could be sandable within 1
hour. Thicker films could be up to 6-8 hours before sandable.
"3M™ Acryl-Blue Glazing Putty, PN 05964 and 3M™ Marine White Putty, PN
05962 . Same formulation, just no blue dye in the marine putty. This is
really an overnight putty, any type of film will likely take at least 12
hours to dry. This is meant for larger jobs.
3M™ Acryl-Marine Putty -- White (PN 05962) should be used to fill small
surface defects such as pinholes and small scratches. Recommended for
minor imperfections, which only require a very thin application. Thick
application will shrink and crack.
"This product is not intended to be used by itself and must be covered with
marine paint or gel coat.
3M™ Acryl-Marine Putty can be used below the waterline only when it is
protected by a marine finish that is intended for use below the waterline.
3M™ Acryl-Marine Putty should not be used for blister repair.
"Sincerely
"Clauzel G.
"3M Automotive Aftermarket Division"
"You can't have everything--where would you put it?"