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Forum topic by kcrandy posted 01-13-2011 08:16 PM 1077 views 1 time favorited 11 replies Add to Favorites Watch
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kcrandy

285 posts in 2892 days


01-13-2011 08:16 PM

Attached is a rather poor image of a chair I’d like to make for which I have the perfect space. My questions are: at what angle do you think the side rails are set? Do you think the feet are each one piece or two pieces and what is that joinery. Ditto the seat joinery. Any other thoughts appreciated.

-- Caulk and paint are a poor carpenter's best friends


11 replies so far

View cabs4less's profile

cabs4less

235 posts in 2222 days


#1 posted 01-13-2011 09:03 PM

the feet look like one piece and looks to be a bridle joint ( the leg has a top-less mortise that fits over the feet) the seat looks to daoded into the arms ( if you use plywood thats fine if not you might have a problem with side to side wood movement) the angle your just going to have to eye ball i would say 5-10 degrees

-- As Best I Can

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kcrandy

285 posts in 2892 days


#2 posted 01-13-2011 09:22 PM

Thanks much. Must now go learn about bridle joints.

-- Caulk and paint are a poor carpenter's best friends

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patron

13535 posts in 2801 days


#3 posted 01-14-2011 04:21 AM

looks to me that the seat rails
are inside the uprights
and have a notch top and bottom
(the top one is higher)
so the seat can be lifted up and out
and set at a different height
the uprights are twice as thick as the foot
and has a notch in both
the bottom of the leg
and the foot too
so it doesn’t slide around

-- david - only thru kindness can this world be whole . If we don't succeed we run the risk of failure. Dan Quayle

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oluf

260 posts in 2499 days


#4 posted 01-14-2011 05:02 AM

I think that the seat is adjustable up and down and is just hung on the ladder rungs of the legs/back.

-- Nils, So. Central MI. Wood is honest.Take the effort to understand what it has to tell you before you try to change it.

View greg48's profile

greg48

588 posts in 2217 days


#5 posted 01-14-2011 06:05 AM

I would concur with the adjustable seat height and the bridle joint at the feet. Re. the back angle, you may wish to estimate the center of gravity (CG) of the intended user and align the back angle to place the CG directly over the middle of the foot.

-- Greg, No. Cal. - "Gaudete in Domino Semper"

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davidroberts

1025 posts in 2946 days


#6 posted 01-14-2011 10:38 AM

that design is basically a really nice design of a chair used in amateur astronomy like the one in the link below. Google astronomy observing chair and see what comes up. The angles should be shown on the plans.

http://www.wood-wonders.com/Catsperch%20Chairs.htm

-- Better woodworking through old hand tools.

View kcrandy's profile

kcrandy

285 posts in 2892 days


#7 posted 01-14-2011 09:36 PM

Thanks all. Great catch on the adjustable seat. I had missed that entirely and what a great idea.

-- Caulk and paint are a poor carpenter's best friends

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kcrandy

285 posts in 2892 days


#8 posted 01-15-2011 03:35 AM

Dear Friends,

I worked this afternoon on a test bridle joint at an oblique angle and realized how difficult that was. And then I looked at the picture again and I think using adjustable levelers on the front feet would let me use 90 degree bridal joints and just use the levelers to get the right tilt since it is such a small degree. What think?

-- Caulk and paint are a poor carpenter's best friends

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patron

13535 posts in 2801 days


#9 posted 01-15-2011 03:43 AM

how about making your bridle joint square as you suggest
from 1” wider stock
and tapering them later

-- david - only thru kindness can this world be whole . If we don't succeed we run the risk of failure. Dan Quayle

View kcrandy's profile

kcrandy

285 posts in 2892 days


#10 posted 01-15-2011 04:07 AM

Dear Patron,

Thanks again for your suggestion. I think I follow you, but I have a darn cheap table saw and wouldn’t trust my ability to taper the side rails. Actually, the fence on my saw is such junk that I might be able to utilize the side sway to do a sufficient taper! Will experiment and let you know.

-- Caulk and paint are a poor carpenter's best friends

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kcrandy

285 posts in 2892 days


#11 posted 02-13-2011 11:38 PM

Dear All,

Thanks again for your help. Final project just posted.
http://lumberjocks.com/projects/44344

-- Caulk and paint are a poor carpenter's best friends

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