|Forum topic by Lee Barker||posted 05-18-2012 05:19 PM||1385 views||0 times favorited||6 replies|
05-18-2012 05:19 PM
General Finishes Polyacrylic semi and Gramercy waterborne brush.
Full disclosure: I have no connection to any entities mentioned here.
The task is brush application of waterborne finish on instrument necks and bodies. 7 – 8 coats.
The necks are straightforward. Shown is the fixturing for these: They stay horizontal for the brushing, then I tip them up to dry. The devices are Panavise, model 300, slightly modified. Vertically, any runs (occasional, but rare) are easier to deal with. Note convenient sandpaper.
The bodies are slightly more challenging because of the rounded edges (5/16R) and the grooves as shown. They are fixtured to lock in place in 90o increments.
Previous brushes I’ve used were somewhat soft on the end, but stiff elsewhere. In brushing at any angle, the overlapping bristle bodies would actually scrape the sides of the body.
Enter the Gramercy waterborne finish brushes. I bought them from Tools for Working Wood. These synthetic bristles don’t load up with water and they are so incredibly soft that brushing this material out is a delight. This is a very well thought out product. I have used them with other WB finishes and I find this particular combination is significantly better.
The brushes clean quickly in warm water.
As always, the two most important habits are to strain the stuff every time and be sure you have abundant lighting in your finish area.
I sense that we’re in a period of refinement of this product (and accompanying techniques), having moved from the original novelty and experimentation phase.
Your thoughts and observations?
-- "...in his brain, which is as dry as the remainder biscuit after a voyage, he hath strange places cramm'd with observation, the which he vents in mangled forms." --Shakespeare, "As You Like It"