Official Luthiers Forum!

Owned and operated by Lance Kragenbrink
It is currently Wed Apr 24, 2024 12:26 pm


All times are UTC - 5 hours


Forum rules


Be nice, no cussin and enjoy!




Post new topic Reply to topic  [ 9 posts ] 
Author Message
 Post subject: Bending Birdseye Maple
PostPosted: Wed Jan 22, 2020 12:01 pm 
Offline
Koa
Koa

Joined: Wed Feb 17, 2016 8:54 am
Posts: 854
State: Texas
Country: United States
Focus: Repair
Any tips on doing this effectively? Just curious on temperature/moisture levels that make it work well. I don't have a cutaway or sharp bends in the shape I need.


Top
 Profile  
 
PostPosted: Wed Jan 22, 2020 3:39 pm 
Offline
Contributing Member
Contributing Member

Joined: Sat Aug 27, 2011 1:59 pm
Posts: 374
First name: Ken
Last Name: Lewis
City: Mt. Pearl
State: NL
Country: Canada
Focus: Build
Status: Amateur
I haven't bent birdseye but I'd say it bends easily like most maples, quilt can give problems with the facets tho.
Maples bend with fairly low temps and scorching can occur with higher temps so for me, between 250 and 300 deg.
and not above. No need for a lot of water, just spritz the craft paper, wrap the wood, start the bending when you see steam.
For no cutaway I'm usually done as the temp gets to around 275 deg.



These users thanked the author Ken Lewis for the post: DanKirkland (Wed Jan 22, 2020 8:37 pm)
Top
 Profile  
 
PostPosted: Wed Jan 22, 2020 4:57 pm 
Offline
Cocobolo
Cocobolo

Joined: Thu Oct 21, 2010 6:26 pm
Posts: 166
First name: Peter
Last Name: Coombe
City: Bega
State: NSW
Zip/Postal Code: 2550
Country: Australia
Focus: Build
Status: Professional
I have only used Birdseye Maple on mandolins, but it bends easily, no different than any other Maple.



These users thanked the author peter.coombe for the post: DanKirkland (Wed Jan 22, 2020 8:28 pm)
Top
 Profile  
 
PostPosted: Wed Jan 22, 2020 6:13 pm 
Offline
Contributing Member
Contributing Member

Joined: Tue Dec 17, 2013 10:52 pm
Posts: 2971
First name: Don
Last Name: Parker
City: Charleston
State: West Virginia
Zip/Postal Code: 25314
Country: USA
Focus: Build
Status: Amateur
Depending on the grain pattern, too much water can cause some side-to-side warping, bulging or other weirdness. And, of course, scorching is problematic on lighter woods like maple. So, too much water is a problem, not enough water is a problem, too much heat is a problem, etc.

How are you at hand bending? I think that helps you keep an eye on the above potential problems better than with a Fox bender. A Fox bender is awesome, but your ability to monitor for problems is limited.



These users thanked the author doncaparker for the post: DanKirkland (Wed Jan 22, 2020 8:32 pm)
Top
 Profile  
 
PostPosted: Wed Jan 22, 2020 7:04 pm 
Offline
Brazilian Rosewood
Brazilian Rosewood

Joined: Fri Dec 14, 2007 3:21 pm
Posts: 3302
Location: Alexandria MN
I have built several Birds Eye OMs. They were all double sides with Rosewood inner sides and sounded great.

The Maple was about 0.060 and I treated it with Super Soft II first and bent it in the conventional manner with a light spritz of water and the dampened brown paper and two blankets top and bottom. I usually start the bend when a lot of steam is rolling off (around 260), take the waist halfway, then lower and upper bouts, clamp them snug, and complete the waist. Usually around 300-320 at the end. Good bends and no scorching. I was worried though.

I do bend both profiled sides together for double sides.

_________________
It's not what you don't know that hurts you, it's what you do know that's wrong.



These users thanked the author Terence Kennedy for the post: DanKirkland (Wed Jan 22, 2020 8:35 pm)
Top
 Profile  
 
PostPosted: Wed Jan 22, 2020 8:35 pm 
Offline
Brazilian Rosewood
Brazilian Rosewood

Joined: Mon Jan 28, 2008 5:21 am
Posts: 4848
Location: Central PA
First name: john
Last Name: hall
City: Hegins
State: pa
Zip/Postal Code: 17938
Country: usa
Focus: Build
Status: Professional
.075 THICK
less water more heat
bend at 275 to 350 F

_________________
John Hall
blues creek guitars
Authorized CF Martin Repair
Co President of ASIA
You Don't know what you don't know until you know it



These users thanked the author bluescreek for the post: DanKirkland (Wed Jan 22, 2020 8:36 pm)
Top
 Profile  
 
PostPosted: Wed Jan 22, 2020 8:44 pm 
Offline
Koa
Koa

Joined: Wed Feb 17, 2016 8:54 am
Posts: 854
State: Texas
Country: United States
Focus: Repair
Thanks for the information John and others!

doncaparker wrote:
How are you at hand bending? I think that helps you keep an eye on the above potential problems better than with a Fox bender. A Fox bender is awesome, but your ability to monitor for problems is limited.


For my building I've decided to learn to hand bend and not use a bending machine so the problem monitoring will be constant. Plus I just can't fit a bending machine in my apartment.


Top
 Profile  
 
PostPosted: Thu Jan 23, 2020 9:17 am 
Offline
Koa
Koa

Joined: Sat Mar 09, 2019 4:50 pm
Posts: 1114
Location: Goodrich, MI
First name: Ken
Last Name: Nagy
City: Goodrich
State: MI
Focus: Build
Status: Amateur
I hand bent my archtop with a tight cutaway out of lightly figured maple. It isn't as wide as a regular guitar (3 inches), but I did it with a tiny violin rib bender with a horrible profile even for violins. I started with the tight curve first. Sprinkled with water when it dried to keep from burning. Very slight concavity in one spot on the lower bout, but the bending iron wasn't big enough to help it. I only noticed it while scraping them smooth.

You shouldn't[t have a problem without a cutout. My cheap iron has no temp gauge. I plug it in and wait half an hour or more.

_________________
Why be normal?


Top
 Profile  
 
PostPosted: Thu Jan 23, 2020 11:52 am 
Offline
Contributing Member
Contributing Member
User avatar

Joined: Wed Oct 08, 2008 11:36 am
Posts: 7256
Location: Southeast US
City: Lenoir City
State: TN
Zip/Postal Code: 37772
Country: US
Focus: Repair
I hand bend figured maple, very light spritz on the wood but I also put a cloth (usually doubled over T-shirt) on the bender and spray it - that provides steam and also keeps the wood from scorching.

_________________
Steve Smith
"Music is what feelings sound like"


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 9 posts ] 

All times are UTC - 5 hours


Who is online

Users browsing this forum: Powdrell1 and 113 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Jump to:  
Powered by phpBB® Forum Software © phpBB Group
phpBB customization services by 2by2host.com