January 2013 Demo

Chris Morgan/ John Beasley / John Solberg

Topic - Finishing


Finishing can be a confusing and mystifying subject to many. This is compounded by package labeling which doesn’t always reveal what a finish product actually is. In this introduction to finishing Chris Morgan will describe the various types of finishes and show a variety of products. Each will be classified into the type it represents. Finishes are based on the solvent they use and the type of material it is made from. Solvents can be mineral spirits, alcohol, lacquer thinner, or water. The finish type can be oil (e.g., tung oil, linseed oil) , shellac, lacquer, varnish (polyurethane), or wax. Some products combine these products. Danish oil, for example, is a combination of an oil (either Tung oil or Linseed oil) and varnish (or polyurethane). More modern finishes used by professionals are catalyzed finishes, either pre-catalyzed or post-catalyzed. Other types of finishes can include glues (CA glue) or epoxy.

During the presentation Chris will give some of the history of traditional finishes, how you can detect what finish you have on a piece, how to tell what you are getting at the store, and some of the properties you can expect from various products.

 There will be a discussion by John Beasley & John Solberg on surface preparation and treatment before finishing followed by finishing from the quick and easy to a blemish free high gloss for display items. Golden Triangle Woodturners supplied about 350 bowls in 2012 to the Empty Bowls program. Have you ever wondered what would happen to finishes applied to them when they come in contact with food products? Plan on attending this meeting and learn the answer to that question.