Knobs 317 to 322 – Our Ladies of Perpetual Punk, Beli w/ Purpleheart

Knobs 317, 318 & 319

Knobs 320, 321 & 322

Named for the mixed-race ladies of punk rock with purple hair, Our Ladies of Perpetual Punk have ¾ vertical grain Beli with ¼ horizontal grain Purpleheart woods.  The heights range from 0.733” to 0.755”, and the diameters from 0.864” to 0.989”.

Beli is similar to Zebrawood in color, but less expensive.  It has a medium-coarse, medium-hard fibrous grain, and cuts leaving strings of grain at the margins.  It has nice iridescence in the side grain, a little hard to see here with vertical grain.

Purpleheart has finer and more uniform grain, which is highly iridescent when properly polished and finished.  As can be seen from the different angles of the knobs in the light in the top rows.  It has an unfortunate tendency to burn and lose color when heated by turning, sanding or polishing, ending up looking more like beige Cherry wood.  One of the guys at Woodcraft suggested that oils cause the color, which can be induce to come back to the surface.  So the Purpleheart in these knobs was wetted with 91% rubbing alcohol (to avoid raising grain in the Beli) after cutting and polishing, and left to set for several days. It seems to have worked.

These knobs were primed with Rustoleum clear glossy spray lacquer.  Some were finished with Minwax Polycrylic.  But roughing the surface of the lacquer with fine abrasive cloth to assure a good tooth for the acrylic to adhere to allowed enough of the water-based finish through to cause the grain to raise.  This required repeated sanding and coating, so the last three knobs (or more) have only lacquer.  Still the surface texture of all the knobs has raised grain that can be felt.  It’s wood – that’s what some wood does.  Consider it a better gripping surface.

© 2017 Don Baker dba android originals LC

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Knobs 311 to 316: Irish Ladies – Olivewood w/ Padauk

Knobs 311, 312 & 313

Knobs 314, 315 & 316

Named for Irish Ladies with pale skin and flaming red hair, these knobs have ¾ vertical grain Olivewood with ¼ horizontal grain Padauk.  The diameters range from 0.945” to 1.002” with heights from 0.716” to 0.742”.  An African wood, Padauk ranges in color from dark red to bright reddish-orange, with the lighter colors being highly iridescent, as shown with the slightly changed angles to the light in the top rows.  Padauk has such an intense color that the dust from turning it will tint other woods with coarser grains.  Olivewood has a very fine and hard grain that does not pick up this tint.  Its color ranges from  ivory to dark beige, but a better quality Olivewood has more subtle grains than shown here.  Being opaque, Olivewood has little or no iridescence.

These knobs were primed with Rustoleum glossy clear spray lacquer.  Some (I forget which) have finish overcoats of Minwas Polycrylic, which may eventually cure to a harder surface than the lacquer.  In a separate experiment on aromatic red Cedar, the lacquer primer produced darker and more saturated wood colors than the acrylic, which reduced saturation.  And if a wood has any tendency to raise grain with moisture, the water-based acrylic will do so, where the lacquer won’t.

© 2017 Don Baker dba android originals LC

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Knobs 308, 309 & 310: Asian Ladies, Canarywood & Wenge

Knobs 308, 309 & 310

These knobs, named Asian Ladies for the color scheme, use ¾” vertical grain Canarywood, with ¼” horizontal grain Wenge to indicate rotation. While Canary wood generally has iridescence in the side grain, it is less evident here.  For some unknown reason, this digital photo shows yellow hues a bit more intense than reality.  Wenge has layers of brown and brownish-black with no iridescence.  The lighter brown layers are softer, and tend to finish lower with sanding, leaving a lightly sculptured surface.

The finish on 308 consists of Rustoleum spray lacquer for base and finish coats, with layers of Minwax Polycrylic in between.  Knobs 309 & 310 omit the lacquer finish coat.  The maximum dimensions (309) are 0.735” tall and 0.969” diameter.  Size 5-40 set screw holes are drilled and tapped into the thicker Canarywood because it envelopes the pot shaft hole.  This keeps the set screw from stressing the wood glue joint on tightening.

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Knobs 305, 306 & 307: Asian Ladies, Canarywood & Wenge

Knobs 0305, 306 & 307

These knobs, named Asian Ladies for the color scheme, use ¾” vertical grain Canarywood, with ¼” horizontal grain Wenge to indicate rotation. While Canary wood generally has iridescence in the side grain, it is less evident here.  For some unknown reason, this digital photo shows yellow hues a bit more intense than reality.  Wenge has layers of brown and brownish-black with no iridescence.  The lighter brown layers are softer, and tend to finish lower with sanding, leaving a lightly sculptured surface.

The finish on these knobs consists of Rustoleum spray lacquer for base and finish coats, with layers of Minwax Polycrylic in between.  The maximum dimensions (306) are 0.736” tall and 0.990” diameter.  Size 5-40 set screw holes are drilled and tapped into the thicker Canarywood because it envelopes the pot shaft hole.  This keeps the set screw from stressing the wood glue joint on tightening.

© 2017 Don Baker dba android originals LC

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Bad Halves of Knobs

Bad Knob Halves

These knobs failed in the glue joint either on cutting or upon tightening the set screw.  In this case J-B Weld PlasticWeld was used and fail twice on one knob, after it was re-glued.  For this reason, no more of these knobs will be made.  The failure rate approaches 50%.  Instead, knobs with a wood used for the pointer will be made of a ¼ inch pointer layer glued to a 3/4 inch body of contrasting color, probably using a water-based exterior-rated wood glue and strong clamps.  One might suspect that these could be salvaged by sanding off the epoxy layers and using aliphatic wood glue, but the epoxy might have entered far enough into the grain to interfere with wood glue.  C’est la vie.

© 2017 Don Baker dba android originals LC

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Knobs 303 & 304, ½ & ½, Chakte Viga, Zebrawood, Argentinean Osage Orange

Knobs 303 & 304

Knob 303 on the left is ½ horizontal grain Chakte Viga & ½ horizontal grain Zebrawood.  Knob 304 on the right is ½ horizontal grain Chakte Viga & ½ horizontal grain Argentinean Osage Orange.  All are strongly iridescent, and glued together with J-B Weld PlasticWeld.  Again, the Chakte Viga iridescence shows a highly folded grain with iridescence changing dramatically with light and viewing angle.

Rustoleum spray lacquer provides both the base and finish coats, with Minwax Polycrylic building up the body in between.  As noted for previous knobs, the real colors are not quite so intensely yellow.

© 2017 Don Baker dba android originals LC

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Knobs 301 & 302, Burmese Rosewood

Knobs 301 & 302

These knobs were made from horizontal grain Burmese Rosewood (although it could be Honduran Rosewood, if I made a mistake), with a very fine grain, and strong iridescence in the side grain. The colors are a reddish beige with darker brown-purple streaks.   Knob 301 on the left got misplaced for a time and did not get a base or finsh coat, showing bare polished wood.  Knob 302 on the right got a Rustoleum spray lacquer finish.  The maximum dimensions are 0.81” tall (301) and 0.95” diameter (302).

© 2017 Don Baker dba android originals LC

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Knobs 299 & 300, Chakte Viga

Knobs 299 & 300

These knobs were made from horizontal grain Chakte Viga, with a very fine grain.  The grain can be folded in appearance with mottled but strong iridescence changing with the angle of light and view.  The colors are a bit less intensely yellow than seen here, going from beige to orange to brown.  It’s hard to get highly accurate colors with a point-and-shoot camera, even an Olympus Stylus 5010, and with daylight color (5000 deg-K) LED lamps.

Because water-based acrylic tends to raise grain, these were finished with Rustoleum Spray Clear Lacquer.  It goes on a bit thick, and only needs about two coats.  Each knob was polished to a high gloss on the lathe.  Then was mounted on a 4-inch by 6mm diameter bamboo stick, which was chucked into a hand power drill, and then sprayed from about 45 degrees off the bottom direction and about 45 degrees of the top direction to assure full coverage.  The maximum dimensions are 0.71” tall (300) and 0.98” diameter (299).

© 2017 Don Baker dba android originals LC

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Knobs 297 & 298, Argentinean Osage Orange

 

Knobs 297 & 298

These knobs were made from horizontal grain Argentinean Osage Orange, with a somewhat fine and even grain, and nice iridescence in the side grain.  The colors are a bit less intensely yellow than seen here – more like an orange-beige.  It’s hard to get highly accurate colors with a point-and-shoot camera, even an Olympus Stylus 5010, and with daylight color (5000 deg-K) LED lamps.

Because water-based acrylic tends to raise grain, these were finished with Rustoleum Spray Clear Lacquer.  It goes on a bit thick, and only needs about two coats.  Each knob was polished to a high gloss on the lathe.  Then was mounted on a 4-inch by 6mm diameter bamboo stick, which was chucked into a hand power drill, and then sprayed from about 45 degrees off the bottom direction and about 45 degrees of the top direction to assure full coverage.  The maximum dimensions are 0.76” tall and 0.96” diameter (298).

© 2017 Don Baker dba android originals LC

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Knobs 295 & 296, Zebrawood

Knobs 295 & 296

These knobs were made from horizontal grain Zebrawood, with a very distinctive grain, and nice iridescence in the side grain.  It’s a beautiful wood and cuts nicely.  The colors are a bit less yellow than seen here – more like beige.  It’s hard to get highly accurate colors with a point-and-shoot camera, even an Olympus Stylus 5010, and with daylight color (5000 deg-K) LED lamps.

Because water-based acrylic tends to raise grain, these were finished with Rustoleum Spray Clear Lacquer.  It goes on a bit thick, and only needs about two coats.  Each knob was polished to a high gloss on the lathe.  Then was mounted on a 4-inch by 6mm diameter bamboo stick, which was chucked into a hand power drill, and then sprayed from about 45 degrees off the bottom direction and about 45 degrees of the top direction to assure full coverage.  The maximum dimensions are 0.73” tall (296) and 0.95” diameter (295).

© 2017 Don Baker dba android originals LC

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