Bob in SF
Member
A friend requested a coin-topped bottle stopper, so I obliged.
Half dollars have long been among my favorite coins - sadly leaving circulation over the past decade or so.
Steps:
Canary wood (Centrolobium spp) countersunk, then drilled to accept a Ruth Niles brass threaded insert.
Top end inlay prepared with a half dollar sized Forstner bit.
Stopper body turned, and then textured with a Sorby micro spiral tool to complement the coin's concentric design.
Airbrushed some gradation with Golden high flow acrylics - burnt sienna to tone it up, then burnt umber to tone it down.
Brush-coated with pre-warmed Alumilte UV.
Cured with a 250 watt 365nm lamp, 30 second exposure, held 3" away.
Wet sanded up to to 4000 grit with mesh pads, then polished with Hut Ultra Gloss Plastic Polish.
Coin annealed gently to a dull red color with a MAPP gas torch, cooled x 30 seconds, quenched, domed using a hardwood (rather than steel) dapping block to preserve the coin's details.
Coin patina done with liver of sulfur (potassium sulfide), followed by buffing on the wheel using jewelers rouge, followed by flannel wheel buffing to bring up the highlights; inlaid with epoxy.
Happy Wednesday - Bob
Half dollars have long been among my favorite coins - sadly leaving circulation over the past decade or so.
Steps:
Canary wood (Centrolobium spp) countersunk, then drilled to accept a Ruth Niles brass threaded insert.
Top end inlay prepared with a half dollar sized Forstner bit.
Stopper body turned, and then textured with a Sorby micro spiral tool to complement the coin's concentric design.
Airbrushed some gradation with Golden high flow acrylics - burnt sienna to tone it up, then burnt umber to tone it down.
Brush-coated with pre-warmed Alumilte UV.
Cured with a 250 watt 365nm lamp, 30 second exposure, held 3" away.
Wet sanded up to to 4000 grit with mesh pads, then polished with Hut Ultra Gloss Plastic Polish.
Coin annealed gently to a dull red color with a MAPP gas torch, cooled x 30 seconds, quenched, domed using a hardwood (rather than steel) dapping block to preserve the coin's details.
Coin patina done with liver of sulfur (potassium sulfide), followed by buffing on the wheel using jewelers rouge, followed by flannel wheel buffing to bring up the highlights; inlaid with epoxy.
Happy Wednesday - Bob
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