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PostPosted: Fri Dec 07, 2018 12:57 pm 
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Walnut
Walnut

Joined: Thu Nov 17, 2016 10:12 pm
Posts: 7
First name: Jonathan
Last Name: Wright
City: Tehachapi
State: CA
Zip/Postal Code: 93561
Country: USA
Focus: Build
Status: Amateur
Hello all!
I "started" my acoustic build over a year ago and progress has been very very slow. I convinced my self I needed to build my thickness sander first, and I finally finished that, so I am ready to get my sides thicknessed down to size. but I am not exactly sure what size I should shoot for. I am building the J200 from Georgia luthier supply plans. I am using curly/flamed maple for the back and sides. I understand curly maple can be tricky to bend, but I am going to do my best, I was just hoping to get your advice on what thickness would be appropriate.
Thanks!


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PostPosted: Fri Dec 07, 2018 5:23 pm 
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Koa
Koa

Joined: Sun Sep 16, 2007 1:27 pm
Posts: 630
Location: United States
start at 90. Flex. If not flopppy, take a little more off.
Most sides land between 85 and 90.
Any less and you risk... well lots.
Any more and you risk...lots as well.

Bend a few dummy sets before you go for the money wood.

Good luck,
Keep the questions coming


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PostPosted: Fri Dec 07, 2018 5:40 pm 
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Contributing Member
Contributing Member

Joined: Fri Jun 22, 2012 11:12 am
Posts: 1170
First name: Rodger
Last Name: Knox
City: Baltimore
State: MD
Zip/Postal Code: 21234
Country: USA
Focus: Build
Status: Amateur
The thinner you go, the easier the sides will bend. The jumbo I built with mesquite B&S had sides less than 0.07" thick. I wouldn't go much thinner than that on purpose, but I have used sides that came out a little thinner than that on a much smaller guitar. I think .075" to 0.085" is pretty typical.

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PostPosted: Fri Dec 07, 2018 5:54 pm 
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Brazilian Rosewood
Brazilian Rosewood

Joined: Wed Apr 08, 2009 9:34 am
Posts: 3081
Depends on the type of maple and stiffness within the species. When I was building mandolins, I would look for most quartered red maple and pick the softest out for ribs. Red or Euro is the best way to go, but if you have that bubbly big leaf, you're stuck. If it is flamed, it can get problematic. Bending on a hot pipe, maybe .080" on high heat (be prepared for burns), if by blanket, a little thinner and again high heat depending on shape. Obviously, dread-nots are much easier to bend than parlors. Highly flamed maple is more difficult.



These users thanked the author Haans for the post: Pmaj7 (Sat Dec 08, 2018 3:48 am)
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