Great work Jerry! (this, and your beautiful woodwork as well!)

I am about to start this 'rail fill' project myself... I decided to do away with the rub-rail, but filling the rail is necessary in order to install the long Genoa track on the rail...

I was considering using polyester resin along with a thickening agent... but this putty product seems quite interesting.
I am looking forward to hearing how happy you are with this product.

C-147 is fast becoming a VERY happy ship. Surely it will last for generations (They already have a great start!)