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April 2011 Meeting
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Tom Jones was kind enough to come talk to us about different finishes and thinners along with their advantages and disadvantages from our April meeting. To summarize things:
Oil Based Thinners- -naphtha for fast drying -mineral spirits/paint thinner for slower drying -acetone to help lacquer and shellac to dry in cold temperatures
Shellac- Advantages -easily dissolved in alcohol or acetone -dries quickly and doesn't darken as much as varnish though it does go amber -provides an excellent water vapor exchange barrier to prevent seasonal warping -easy to repair for touch-ups -can be used under any other finish as a seal coat -food safe -very good rubbing properties to achieve varying shine levels Disadvantages -poor resistance to liquid water, alcohol, heat (can melt at 110 degrees), alkali cleaners -short shelf life when flakes are dissolved in alcohol -not good for outdoor use or for heavy use areas like table tops
Varnishes/Oils/Urethanes- Advantages -easy to apply and more protective in terms of heat, abrasion, and solvents (including water) -easy to apply with a brush and is inexpensive and readily available Disadvantages -cures slowly making dust in your finish more of an issue -yellows over time with exposure (with alkyd resin with soybean and safflower oil being the least yellow) -harder to rub out to a nice finish (when compared to lacquer) -difficult to repair or remove due to solvent resistance -you should sand between coats for good adhesion to previous layers
Lacquer- Advantages -dries quickly allowing for a fast finish build and it minimizes dust issues -easy to spray -easy to repair renew since lacquer actually dissolves the previous layer and makes a chemical bon -very clear finish that rubs out to a nice deep finish Disadvantages -average scratch and water vapor resistance with with poor chemical and heat resistance -may yellow over time -flammable/toxic fumes
The pictures below show some of the items brought in for the monthly President's Challenge entries and show-and-tell. Congratulations to our President's Challenge winner Jim Nickless shown with his beautiful set of nesting eggs! We also had a second place winner Ted Wilkins with his carved and decorated egg in base. As always, thanks to all of those that brought in items for show and tell and those that brought in flag bases.
Our May President's Challenge item is to turn a flag base . Ted has CA (super) glue and accelerator for sale. He has 2 oz bottles of thin, medium and thick for $6 each. He also has black glue for $8 each. Don't forget about our special challenge of turning wooden flag holders for our veterans at the Ann Arbor VA hospital. All bases should have a 3/16" hole to accept the flag. We are starting a mentoring program for our membership. If you are willing to help by fielding questions, please get in touch with Craig or Scott.
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