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