Transcript Stave Vessel Design & Construction

Stave Vessel Design &
Construction
Tom Kenyon
May 2012
The Art of Segmented Wood Turning
By Malcolm Tibbetts
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10” is too Tall - looking for about
6”
6/4 wood required for staves prefer 4/4
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First Prototype
• Symmetrically scaled plan to 6” high
• Simplified construction
– Eliminated veneer layers
– Eliminated multi layers splines
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Revised Design
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Prototype too round
Top out of proportion to the body
Center divider too thick
Created lip for top/body joint
Second prototype looked good
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Parts
Neck
Top
Separator
Splines
Staves
Bottom
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Stave Cutting Jig Based on Replaceable Throat Sled
My Friend!
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Stave Cutting Jig
First Ten Vessels
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Dedicated Segment Cutting Sled
Designed to accommodate Bridge
City Tool’s Angle Master
– Large rear fence opening
– Removable segment slide
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Vessel Holding Fixture
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Used for;
– Initial glue up of staves
– Initial turning of the base
– Final turning of the base
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Design from PBS TV show and
Malcolm Tibbetts book
Duct tape help donuts slide
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Ring Sanding Jig
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Shown previously in Show-n-Tell
Descriptive article posted on Segmentedwoodturners.org
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Templates
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Templates cut out of
1/16” plastic on the laser
Outside only one that
proved useful
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Production
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Production of 20 broken into three groups - 10, 5, and 5
– Manageable number of parts
– Doable task - not overwhelming
– Assessed mix after each group
• Wood combinations that worked or didn’t work
• Appropriate mix
• Available material
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Timeline (best recollection)
– Design started late Sep, done by third week of Nov
– Lots of time finding material (tops) and making prototypes, jigs,
and templates
• Four weeks to the first prototype
– One to two days to prepare material - almost independent of number of
vessels
– Two vessels going simultaneously
– About a day for each
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Parts Preparation
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Parts Assembly and Glue up
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Top
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Top opening drilled after finishing - fits tailstock plug - helps alignment
during glue up
Inside finished with shellac
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Base/Bottom
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Lots spinning ! Slow is OK
Watch out for those bolt ends!
Inside bottom base cut to blend in with bottom plug, also gives reference
for turning inside
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Turning Base Inside & Outside
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Trick is getting a tight fit with top
Inside finished with shellac
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Finishing the Vessel
Last step is to make plug to center vessel’s top on the jig
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All Done !
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Used General Finishes sealer and oil/urethane
Buffed with brown paper sack after a week
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