Gents,

To glue the doublers on the fuselage sides I use vacuum bagging and control the vacuum on 0,4 a 0,5 bar suction pressure, 6 a 7,5 psi.

I use normal “white wood glue??”, but I make the backside of the fuselage side a little wet to keep the sheets “straight” and tape them together.
I make some pinholes in the corner of the bag in the fuse sides to delete the moisture by al little airflow through the bag. A lot of moisture also is exposed by the balsa of the sheets.

The Compressor is an old refrigerator compressor I also use for painting.

Picture 2 and 3 is the pressure controller, made from a bourdon manometer tube with electronic position detector, amplifier and a relay. Modern modelers will take a modern pressure switch I think, but you cannot use that for a Taurus.
Cees