Hello guys.

I am about to start a series of experiment on glue joints resistance.
The idea is to try different types of glue on the same item and load it till the bond shears.
I though about using a block of aluminium, but after more reflection, I decided about using my new PYCABS servo bracket.
The reason behind that is that PYCABS is extremely glue friendly and that the servo bracket has got an open honeycomb bonding surface. This means that the material bonding capability does not enter into the equation, but only the glue joint strength.

The experiment protocol is the following:
1. Use one of my strongest workshop table and glue the bracket on the hard wood surface.
2. The surface is clean and has got a series of 10 tiny spherical holes to ensure that glue embeds into the wood.
3. The bracket is glued and maintained with a clamp at moderate pressure til the complete bond time specified by the manufacturer.
4. The bracket is loaded through a steel wire that holds fitness weights.
5. The test is conducted till rupture of the bond
6. The weight at which the bond is braking is divided by the bonding surface. this gives a shear strength in lbs/ sq.in

I will make a table with all kinds of glue, using always the same protocol.

Here is a list of the glues I intend to test:
1. Z-poxy 5 min
2. Hysol E-20HP
3. Hysol E-20NS
4. Hysol 9462
5. CA gel
6. Gorilla glue
7. Clear silicon
8. Wood vinylic glue