I selected some blocks of wood that I could use as clamping cauls once I spread the contact cement on both surfaces: my hardwood block and the side of the leather I was going to place on the wood block.
One side of this strop will be using the rough side of the leather and the other side will expose the smooth.
I spread the contact cement on both surfaces as instructed. Plus afterwards I gave the glue 15 minutes to turn or cure.
Then carefully I laid the leather on top of the hardwood block trying to let the oversized leather poke out and over each edge. After the first leather was clamped up for 15 minutes or so, I took it out of my vise. That is when with a razor knife I trimmed the excess leather around the wood block.
Now I was ready to glue the other leather piece. I have the hardwood block, the leather and the wood cauls fixed in the jaws of my vise. I will let it sit there overnight.
-- --- Happy Howie