Crafting a Dizzy Bowl - Woodworkers of Southeast Bowl.pdf pattern The dizzy pattern is created by...

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Transcript of Crafting a Dizzy Bowl - Woodworkers of Southeast Bowl.pdf pattern The dizzy pattern is created by...

  • Crafting a Dizzy Bowl

  • Visit Youtube.com

  • Visit Youtube.com

    In the search section type “dizzy

    bowl” and you will find dozens

    of videos about turning dizzy

    bowls.

  • Visit Youtube.com

    In the search section type “dizzy

    bowl” and you will find dozens

    of videos about turning dizzy

    bowls. Watch some and

    familiarize yourself with the

    building process.

  • Before You Get Started

    � Power tools that I used:

    � Lathe

    � Band saw

    � Table saw

    � Planer

    � Jointer

    � Drum sander

    � Belt sander

    � Disc sander

    � Dust collector

    � Hand tools that I used:

    � Caliper

    � 18” ruler

    � Wood clamps

    � Compass

    � Self made jigs

    � Wedge sled

    � Sacrificial sanding plates

    � Push block

    � Ring press

    � Centering jig

  • Things to consider

    � Use only scrapers and scews because the majority of your bowl will consist of

    end-grains.

    � Because the bowl will be end-grain if you do not have a multidirectional lathe you will not be able to sand the bowl completely smooth. The nap of the grain

    will cause the bowl to feel smooth from one direction and rough from the other.

    � Do not attempt to turn down any part of the bowl until all the segments are added. If you turn each ring to thickness as you assemble the bowl, the thin

    base of the bowl may not sustain the weight of the unfinished section of the

    bowl. I speak from experience!

    � By taking the time to glue the rings one at a time, and by using a centering jig,

    you will ensure all the rings are centered (the more rings you have the more

    important this is).

    � I use Titebond I, or II aliphatic glue. I can glue a ring and in one hour return to

    the lathe, round, and flatten the ring and glue another ring onto the bowl.

  • Designing your dizzy bowl

    � Dizzy bowls are time consuming and tedious projects. Do

    not get in a hurry.

    � Determine the diameter and depth of your bowl.

    � Anticipate how many rings you will need to construct.

    � Draw your bowl to scale including all the rings at correct

    dimensions.

    � Select the different types of wood you will be using.

    � The thinner your strips are the more spectacular your

    bowl will be.

  • Why draw your dizzy bowl to scale?

    � You can visualize how large the bowl will be.

    � You can determine the thickness of all your rings.

    � You can determine how many rings you will need.

    � You can label your rings on paper before you label your boards.

    � You will have the measurements to all your rings.

    � By drawing a line down the middle of your bowl you can use your drawing to set your compass. This saves a lot of time.

    � You can determine the diameter of you rings in order to prevent wasted wood.

  • Drawing out your dizzy bowl

  • Selecting and rough cutting

    your wood � For rough cut selections

    � Cut all pieces to same length

    � Cut all pieces to same thickness

    � Preferably 2” thick or more.

    � Width is not important at this point

  • Cutting your wood to desired thickness

  • Cutting your wood to desired thickness

  • Bi-symmetrical construction

  • Gluing your pieces

  • Gluing your pieces Use Caliper clamps to prevent wood strips from

    slipping out of place

  • Glued and finished slabs

  • Glued and finished slabs

  • Re-sawing

    the slabs

  • Re-sawing the slabs

    I re-sawed the

    Slabs to 3/16”

    and drum

    sanded them

    down to 1/8”

  • Re-sawing the slabs

    Slabs are smoothed and thickness

    set with my drum sander

  • Drawing your rings

    Twelve boards,

    Twenty-four halves.

    All are taped in the

    back. After the rings

    are drawn the halves

    are separated and

    cut on the band saw.

  • Marking your rings

    Only outer diameter of rings are drawn and cut.

    This allows for maximum width

  • Cut rings

    Because the rings Were 1” in width, I was able to cut two sets of rings and construct two Bowls instead of one.

  • Dry stacking the rings

  • Making your

    pattern

    The dizzy pattern is created

    by turning each successive

    ring clockwise. Also every

    ring must be turned the

    same distance and in the

    same direction.

  • Ring Overlap

    After splitting the rings, each set

    of rings were now 7/16” in width.

    When the rings were stacked

    this allowed for a 5/16” overlap.

    Since I was stacking 36 rings, I

    had to make sure each ring was

    centered. From top to bottom,

    my combined margin for error

    was only 1/8”.

  • Assembly of bowl

  • Gluing the rings

    Each ring is only 1/8” thick and is

    comprised of dozens of narrow strips of

    wood. This makes them very fragile

    and flexible. So, if you drop one it will

    break. Also, they tend to warp when

    pressed together.

    For this reason. I first glue them in

    pairs. The staggered rings create a

    stronger and more rigid ring. This

    makes them less likely to break, or

    warp.

    This also allows you perform half your

    gluing at one time making for quicker

    assembly.

  • Using a Ring Press

    � A ring press applies consistent pressure over entire ring.

    � Use extreme caution when gluing more than two rings. They tend to slip!

    � My Method:

    � Glue two rings and press for five minutes. Start with widest rings.

    � During this time glue two more ring, lift the press, lay paper between the two sets of pressed rings and press.

    � Glue two more rings and continue process.

    � Note: I glued the rings in pairs on the press. I took the pared rings and glued them in place on the lathe using my centering jig.

  • Centering the rings

    My high tech

    centering jig

  • Centering the rings

    � Remove bowl from chuck and place upright.

    � Dry fit the next ring and turn it to its proper location.

    � Glue ring and press into place.

    � Gently clamp bowl back into chuck.

    � Center ring with centering jig.

    � Make sure ring is still turned in proper place.

    � Press the ring onto the bowl with centering jig.

    � Wait at least one hour.

    � Round out new ring with scraper.

    � Make sure the flat surface of the ring is square and flat.

    � Get next ring and repeat previous steps.

    � Continue until all the rings are glued onto the bowl.

  • Flattening the face of the ring

  • Adding the rim, or last ring

    Both the base and the rim

    were made with Wenge

  • Final touches

    � 1. Use scraper to smooth bowl.

    � 2. Use caliper to gauge thickness.

    � 3. Scrape bowl down to desired

    thickness.

    � 4. Sand with 150, 240, 320, 400, and

    600 grit.

    � 5. Sand with 1500, 1800, 2400, 3200

    grit micromesh.

    � 6. Finish with a clear gloss.

    � 7. Cut off of sacrificial block.

    � 8. Enjoy your bowl.

  • Finished Bowl