Traditional Putty for woodworking

I needed some putty for a large scale restoration job, the woodwork on a building constructed in 1850.  This is for exterior application on sills, lintels, bargeboards, moldings, etc.  Mostly for covering cut nails used in the restoration, but some to fill seasoning cracks.

Here is my recipe based on traditional formulations: 1/2 cup whiting [calcium carbonate], 2 tablespoons of zinc oxide [metallic dryer] and 3 ounces of Moses T’s St. John’s Oil and mixed together.

It takes a while to dry and does remain flexible for wood movement.

Stephen

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