Brad Duckett Dalton Area Woodturners Guild November 2019 Design - - PowerPoint PPT Presentation

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Brad Duckett Dalton Area Woodturners Guild November 2019 Design - - PowerPoint PPT Presentation

Brad Duckett Dalton Area Woodturners Guild November 2019 Design The Bowl The Lid The Knob Embellishments Design Elements Shape of bowl Shelf Face of lid Knob Foot Embellishments: Beading,


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SLIDE 1

Brad Duckett

Dalton Area Woodturners Guild November 2019

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SLIDE 2
  • Design
  • The Bowl
  • The Lid
  • The Knob
  • Embellishments
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SLIDE 3

Design Elements

  • Shape of bowl
  • Shelf
  • Face of lid
  • Knob
  • Foot
  • Embellishments: Beading, Texturing
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SLIDE 4

Materials: Blanks (all approximate):

  • Bowl 9" x 3
  • Lid 1 1/2" x 8”
  • Knob 2” x 2” x3”

Or … Green turned and sealed blank

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SLIDE 5

Establish Tenon and Base

  • Worm screw
  • Chuck jaws
  • Cole jaws
  • Vacuum chuck head

Use tailstock! Establish basic bottom shape

  • No flat lines
  • 1/3:2/3 Ratio
  • Footer = 1/3 of diameter
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SLIDE 6

Flip and grasp in tenon Slide the headstock down to the end of the lathe

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SLIDE 7

Establish Curve at Top

  • Begin Hollowing

Don’t take it too far! Establish Shelf for the Lid

  • Stepped or not
  • Design elements of the rim
  • Beading
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SLIDE 8

Undercut the Rim

  • Do not use bowl gouge
  • Use hook tool such as Hunter

tool Careful here…take small cuts Remove from lathe

  • Do not remove it from the

chuck! You’ll never get it running right again. (Ask me how I know …)

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SLIDE 9

Prepare Lid Blank

  • Round and true up
  • Drill 7/8” recess

Prep Underside of Lid

  • Reverse and Mount in 20mm

Jaws

  • True up face
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SLIDE 10

Create Lid Edge

  • Measure bowl shelf
  • Transfer measurement to lid
  • Step or no step?

Cut Lid Edge

  • Test by fitting it to bowl (still
  • n chuck)
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SLIDE 11

Mount Lid to Bowl

  • Put the bowl back on the lathe
  • Press the lid against the bowl
  • Bring up tailstock – not too much

pressure but you’ll be surprise how strong it is. Shape the Lid

  • Remove wood leaving support

in the center

  • Create the “lift” from bowl’s

edge to the underside of knob

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SLIDE 12

Detail the Lid

  • Establish edge detail
  • Decide if there will be

embellishment Create Mount Point for Knob

  • Tape the lid with painters tape
  • Carefully nibble away at stem
  • Remove tailstock and remove

excess wood leaving a base for the knob

  • Detail around the knob
  • Re-Drill 7/8” hole for knob
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SLIDE 13

Finish the Lid

  • Reverse the lid
  • Grip with 20mm jaws
  • Detail underside of lid

Option: Finish bowl

  • Wet sand with wipe on poly
  • Other finishing options
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SLIDE 14

Shape Foot of Bowl

  • Reverse the bowl
  • Cole jaws
  • Jam chuck
  • Vacuum head
  • Apply tailstock pressure

Finish Foot of Bowl

  • Nibble away at tenon
  • Detail foot
  • Remove and trim off nub

manually Don’t be too aggressive!

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SLIDE 15

This is the hardest part to get right! The Nautilus curve or Golden Mean or Fibonacci Spiral

  • Much more pleasing than a simple curve
  • Waist of curve is approximately 1/3 to 2/3 ratio
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SLIDE 16

Prepare the Knob

  • Create a tenon and round to
  • utside diameter of
  • Cut a 7/8” tenon that will

glue into the lid Create the Curve

  • Texture the top if desired
  • Nibble from both sides while

working down to final shape

  • Keep in mind the Nautilus

curve

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SLIDE 17

Embellishment

  • Golden gels and pastes
  • Tissue paper
  • Nitrile gloves
  • Wad paper

Paint

  • Base coat of black
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SLIDE 18
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SLIDE 19

Andy Black Andy Black John Keeton

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SLIDE 20

John Keeton John Keeton Ron Sass