Simplified Segmented Turning

Simplified
Segmented
Turning
Dennis Keeling,
Sunday, 20 March 2011
RPT
Background
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Sunday, 20 March 2011
Aged 10 - turned black-board pegs
Engineering apprentice
Industrial Engineer
Software Industry
Took up turning again in 1997 as a hobby
Started making bowls from wood segments
Spent a week with Bud Latven in New Mexico 2003
Why segmented turning?
• Bored with making bowls and pepper mills!
• Difficult to find a home for them.
• Ran out of bowl blanks - expensive to buy.
• What can you do with your off-cuts?
• What can you make in two hours a day?
Sunday, 20 March 2011
Sunday, 20 March 2011
Sunday, 20 March 2011
Open Segment Design
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Complicated using Driscoll Jig
- Gluing one segment at a time
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SegEasy Template
- Gluing and locating 18 / 24 segments at once
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Woodturners Studio - simple CAD system
Sunday, 20 March 2011
Sunday, 20 March 2011
Sunday, 20 March 2011
Sunday, 20 March 2011
Segmented Turning
• Very popular in North America
• Influence of Ray Allen, Malcolm Tibbetts, etc
• Polychromatic turning UK
- Tunbridge Ware c1800
- Cambridge Ware c1950
• Association of Segmented Turners
- over 1,000 members
Sunday, 20 March 2011
Sunday, 20 March 2011
Woodturning February
Woodturning April
Sunday, 20 March 2011
Woodturning March
Woodturning May
Woodturning June
Woodturning October
Woodturning November
Woodturning December
Sunday, 20 March 2011
Tapered Stave Urn
Woodturning May
Golden Rectangle Platter
Woodturning March
Sunday, 20 March 2011
Staved Biscuit Barrel
Woodturning April
Sunday, 20 March 2011
Sunday, 20 March 2011
Segmenting Book
Summer 2011
Sunday, 20 March 2011
Simple fruit bowl
Sunday, 20 March 2011
Segmented process
• Machine flat strips of timber
• Cut into segments
• Glue them together
• Build a composite bowl
• Turn your bowl!
Sunday, 20 March 2011
Segmented design
Sunday, 20 March 2011
The Maths
12 segments
18 segments
24 segments
Sunday, 20 March 2011
= 360 / 12
= 30 degree segments
= 15 degree mitre angle
= 360 / 18
= 20 degree segments
= 10 degree mitre angle
= 360 / 24
= 15 degree segments
= 7.5 degree mitre angle
Sunday, 20 March 2011
Preparing the wood
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Sunday, 20 March 2011
Cut strips of wood
Face and edge using a planer-jointer
Dimension using a circular saw
Thickness using a planer-thicknesser
Rough-cut the segments - band-saw
Dimension the segments - sanding disk
Or cut the segments on a Mitre Saw
Preparing the wood
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Sunday, 20 March 2011
strips of wood
Face and edge using a jointer
Dimension using a circular saw
Thickness using a thicknesser
Rough-cut the segments - band-saw
Dimension the segments - sanding disk
Or - Cut the segments - mitre-saw
Preparing the wood
•
•
•
•
•
•
•
Sunday, 20 March 2011
Cut strips of wood
Face and edge using a jointer
Dimension using a circular saw
Thickness using a thicknesser
Rough-cut the segments - band-saw
Dimension the segments - sanding disk
Or cut the segments - mitre-saw
Gluing the segments
• Remove any burr from the edges
• Line up grain-pattern
• End-grain difficult to glue - Titebond ll
• Glue segments into a semi-circle
• Face & glue semi-circles
• Sand glued-up ring
Sunday, 20 March 2011
Building the composite
• Face the base
• Glue first level - centre - clamp
• Sand intermediate levels - centre - clamp
Sunday, 20 March 2011
Turning the composite bowl
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Sunday, 20 March 2011
Remove sharp edges inside & out
Shear-scrape inside
Sand and finish
Shear-scrape outside - top half
Part-off and reverse bowl
Shear scape outside
Sand and finish sides and base.
Sunday, 20 March 2011
How long to make
• Building - 8 days @ 1 hour per day
• Turning - 2 hours
• Finishing - 2 hours
• Elapsed time - 9 days - 12 hours work
Sunday, 20 March 2011
Open Segmented Turning
• Became more popular after segmented
templates were introduced.
• No end-grain gluing - only side-grain.
• Gap from 4 - 10 degrees.
• Simpler to build than solid segmented bowls
• Wow factor!
Sunday, 20 March 2011
Simple fruit bowl
Sunday, 20 March 2011
Sunday, 20 March 2011
Sunday, 20 March 2011
Open segmented turning process
• Cut the segments
• Build the composite using the template
• Turn and finish the inside
• Turn the outside rim and side
• Reverse the bowl and turn the base
• Sand & finish
Sunday, 20 March 2011
Open segmented turning process
• Cut the segments
• Build the composite using the template
• Turn and finish the inside
• Turn the outside rim and side
• Reverse the bowl and turn the base
• Sand & finish
Sunday, 20 March 2011
How long to make
• Building - 8 days @ 1 hour per day
• Turning - 2 hours
• Finishing - 2 hours
• Elapsed time - 9 days - 12 hours work
Sunday, 20 March 2011
Simplified Segmented Turning DVD
DVD £15.00 + VAT
Sunday, 20 March 2011
SegEasy Templates
SegEasy
Open Segment Templates
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£30.00 + VAT
18 segment
24 segment
Sunday, 20 March 2011
To purchase go to - www.dkeeling.com
Sunday, 20 March 2011