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, Texturing

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

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

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

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

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 …)

Prepare Lid Blank

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

Prep Underside of Lid

• Reverse and Mount in 20mm

Jaws

• True up face

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)

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

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

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

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!

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

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

Embellishment

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

Paint

• Base coat of black

Andy Black Andy Black John Keeton

John Keeton John Keeton Ron Sass