torque with pin dope and CA glue

[John Dewey]

The first PTG convention I went to was in Cleveland, I believe it was 1972.
The last class period of the convention I took Cliff Gears class on pin
block drilling. At the end of the class Cliff had some pieces of Falcon wood
pin blocks he had been using for the class. He gave me a piece about 1 foot
square.

 I took it home and drilled 8 holes such that the pin torque was between 5
and 10 inch pounds. I then treated the block with several different
treatments. Unfortunately I have lost the paper where I wrote down what was
in which hole and my early results. As best as I remember I use water, 50%
glycerin-50% alcohol, a drop of water followed a couple of minutes later
with the glycerin-alcohol mix, Lunsford's Pin-tite, some red stuff I think
was Garfields,  maybe something else, and 1 hole untreated.

As best as I remember I say no improvement for several days and concluded
that pin dope would not work on Falcon wood. About 6 months later I noticed
the block and tried it. There was a marked improvement on some of the pins.
I think I saw some torques of 30 to 40 inch pounds. I believe the water
followed by the glycerin-alcohol mix was the best. Over the years I have put
a tunning hammer on it several time and have felt a difference in the torque
between different pins. I have not kept records of what the numbers were.

The evening of 12 May 1999 I took torque readings: (pin number- inch pounds
torque) 1-7.5, 2-10, 3-11, 4-3, 5-7.5, 6-9, 7-5, 8-2.

I then put a bead of thin Hot Stuff CA glue around each pin. The morning of
13 May 1999 I took torque readings (pin number-inch pounds torque to break
pin loose-inch pounds torque to turn pin after moving the pin a couple of
times). 1-30-20, 2-20-15, 3-20-17, 4-25-15, 5-50-20, 6-40-20, 7-70-20,
8-20-10.

Tried them again this morning 15 May 1999 and got the following results (pin
number- inch pounds torque) 1-20, 2-12, 3-12, 4-12, 5-15, 6-15, 7-17, 8-7.

I will try these again in a couple of weeks and them may try another
treatment of CA glue. I will try to keep this list informed of the out come.

John A. Dewey