Official Luthiers Forum!

Owned and operated by Lance Kragenbrink
It is currently Wed Jul 23, 2025 11:27 am


All times are UTC - 5 hours


Forum rules


Be nice, no cussin and enjoy!




Post new topic Reply to topic  [ 3 posts ] 
Author Message
PostPosted: Tue Jul 08, 2014 9:38 pm 
Offline
Brazilian Rosewood
Brazilian Rosewood
User avatar

Joined: Wed Feb 20, 2008 9:12 pm
Posts: 6994
First name: Mike
Last Name: O'Melia
City: Huntsville
State: Alabama
Focus: Build
Status: Semi-pro
I recently watched a John Hall video on bending. Biggest difference between what I was doing and what he is doing is I put the blanket inside the slats. And yes, I resembled his remark about lots of sanding work afterwards. So on the six sides I just bent, I put it on top of the top slat. Intuitively, this makes no sense since I'm sliding the blocks against tgat rubber surface. Perhaps this will shorten the blanket life, and I guess I could get another slat. But what a difference thîs technique makes in the finished product. Very smooth, no marks.

Thanks John!

Mike


Top
 Profile  
 
PostPosted: Tue Jul 08, 2014 10:42 pm 
Offline
Brazilian Rosewood
Brazilian Rosewood

Joined: Wed Feb 20, 2008 7:15 pm
Posts: 7541
First name: Ed
Last Name: Bond
City: Nanaimo
Country: Canada
Focus: Build
Status: Professional
Amazing what can happen when you read the instructions!


Top
 Profile  
 
PostPosted: Wed Jul 09, 2014 7:18 am 
Offline
Brazilian Rosewood
Brazilian Rosewood

Joined: Mon Jan 28, 2008 5:21 am
Posts: 4915
Location: Central PA
First name: john
Last Name: hall
City: Hegins
State: pa
Zip/Postal Code: 17938
Country: usa
Focus: Build
Status: Professional
Actually we have some updates on bending. We will be posting a new video soon. Not all wood works and react the same. Wood needs heat to allow cells to crush to make the bend happen. In the older days the bender used light bulbs and then better technology of the heat blanket came into use. Not all blankets are the same , I use a 5 watt per in blanket and this allows for better heat control under usage and lower heat loss.
The original bending vid showed the blanket on top , and actually these blankets were used where I worked and are designed to take a good amount of abuse. So the rubbing didn't matter .
What I did learn over years of bending , is that some wood , especially high figured woods need the heat FAST so I changed to this arrangement
SLAT Wet Papper Wood Wet Paper Heat Blanket Slat
what this does , is get the heat on the wood immediately. The wet paper allows the heat to penetrate quickly and you don't need much water. Koa , Figured Maple all bent better for me using this method. I also will use Super Soft ll . The wet paper also eliminated the grain raising on the wood.
I bend most wood between 275 to 375 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


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 3 posts ] 

All times are UTC - 5 hours


Who is online

Users browsing this forum: No registered users and 18 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