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Thread: Jarrah Dining chairs
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21st January 2008, 06:38 PM #1
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Jarrah Dining chairs
Trying to run before i can Walk!!
Decided to have a go at building some dining chairs, wanted a chair that was modern in concept and fully utilised the strength of modern adhesives.
Decided on a leg geometry that minimised stresses at the joints. Also allowed high clamping pressures to be used on all joints during assembly.
After a lot of testing used, Selleys durabond for all the main joints and epoxy, where some slip was an advantage on the dovetailed rear splines.
Finished with three or four coats of Danish Oil rubbed back to 1500 grit.
The angle of the seat and the contours ground into them proved critical to comfort, many 'Bums' were used to establish final shape.
just finished number 8 .. now for the table.Last edited by Paddy; 21st January 2008 at 06:40 PM. Reason: add pics
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21st January 2008, 07:38 PM #2
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magnificent! My chairs are like orange boxes by comparison. Pics are not quite sufficient in explanation of joints. I assume some mortice and tenons. Also, I am worried about sideways racking forces. Please say more about these absolutely gorgeous chairs.
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21st January 2008, 08:07 PM #3
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Paddy,
Nice chairs. Can you give us more info on the joinery? I think the back slats would provide better lumbar support if they were curved.
Rocker
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21st January 2008, 08:28 PM #4
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Design stresses in the chair are in fact very low. However just to be on the safe side loaded a chair with 200kg of cement bags and gave it a good shove sideways, much stiffer than i expected!!.
In fact the side members of the seat carry the sway loads ,as a torsion member, where they are reacted by the very strong back structure.
All joints were either lap or blind lap joints, to ensure that high clamping pressures could be applied to the adhesive interface.
Appart from the band saw used for cutting out the blanks fron the 43*180 stock. most of the work was done with spoke shaves and chisels. The router was only used to remove the last 2mm from the Lap joints as my skills were not good enough to get a flat base suitable for bonding by hand. I found the router blunted very quickly on the Jarrah and it was just as fast with the Chisel.
The back staves have about a 15mm curve to give support to the back.
A lot of bodies were sat in the first chair to get the final shape and the final seat contures were established by grinding away pressure points, as people commented.
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21st January 2008, 08:32 PM #5
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A great job... looks magnificent... what more can I say
les
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21st January 2008, 08:39 PM #6
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Beautiful chairs Paddy, well done
It's better to be thought of as a fool than to speak up and remove all doubt!
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21st January 2008, 09:30 PM #7
Skwair2rownd
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Jarrah Chairs
Simply beautiful!!
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21st January 2008, 10:31 PM #8
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Nice work Paddy
....................................................................
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21st January 2008, 10:43 PM #9
Firewood Extraordinaire..
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Nice work Paddy!
Very unique design the joinery, and finish looks superb!
Oh, and nice photo too
Cheers!
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21st January 2008, 11:29 PM #10
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22nd January 2008, 01:04 AM #11
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Patty, very nice work they kind of remind me of a “Z” chair but with a twist of flare added to them … I like!
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22nd January 2008, 07:10 AM #12
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As the others have said "Nice work Paddy"
Regards
Al .
You don't know, what you don't know, until you know it.
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22nd January 2008, 07:19 AM #13
That's SIR!!......Not CUR
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Nice!
WOW!!!
Very Nice, Paddy, Very Nice!
Must remember this one,
if ever I do a chair.Navvi
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22nd January 2008, 07:26 AM #14
Cool dude
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Fantastic job on an original design. The choice of timber is perfect and I don't think it would be the same if done in a lighter timber.
Have a nice day - Cheers
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22nd January 2008, 07:27 AM #15
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pretty impressive mate
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