Go bar deck assembly from a sheet of 3 4 plywood cut six pieces each 2 feet x 2 feet.
Go bar deck.
The go bar deck or the use of bent sticks between two solid surfaces is a very old method of applying clamping pressure while gluing two parts together.
Stack and glue two of the pieces together and stack and glue the other four together the extra thickness is required to give the go bar deck base sufficient stiffness.
The compression bars are made from straight grained maple with a 3 16 x 3 8 cross section.
The deck consists of two double pieces of plywood a floor and a ceiling separated by four pipe nipples and flanges at the corners.
By bending fiberglass or wood rods between the upper and lower decks it is easy to put pressure just about anywhere you need it.
Now you could just use lots and lots of expensive clamps with many cauls but most luthiers use what is called a go bar deck.
In the picture the upper transverse brace is being glued to the top of an acoustic bass guitar.
The second part of the equation is to press it all into a disk with the correct radius but that s not todays problem.
The bars worked well when left 1 2 3 4 longer than the clear distance to the upper deck.
A gobar clamping deck is a nifty system for clamping.
The basic idea is that you apply vertical pressure using rods usually fiberglass under tension.
What you are looking at is a go bar deck sitting on the extension table of my table saw.