***** Guitar Project Jigs, Tools & Techniques Online Resources Archives OLF Video Page Library of plans MP3 Library Inlay Class
Offical Luthiers Forum





And our community proudly sponsored by:

RC Tonewoods | Stewart MacDonald | LuthiersForum
TasmanianTonewoods | OLF | OLF MERCH
Luthier Suppliers | Pacific Coast Woods | ELEVATE
OLF X | Tasmanian Acoustic Tonewood | Luthiers Forum Store!
Luthiers Forum | OLF Facebook | AVAIL SPACE
OLF | Alaska Specialty Woods | A.Hix Tonewood
Duke of Pearl | Birkonium CNC | Space




Official Luthiers Forum!

Owned and operated by Lance Kragenbrink
It is currently Sun Jul 20, 2025 9:33 pm


Board index » Luthiers Forum Rooms » Guitar Building Forum

All times are UTC - 5 hours


Forum rules


Be nice, no cussin and enjoy!




Post new topic Reply to topic  Page 1 of 1
  [ 8 posts ] 
  Print view Previous topic | Next topic 
Author Message
nkforster
 Post subject: torrefication protocol?
PostPosted: Thu Jul 02, 2015 7:10 am 
Offline
Cocobolo
Cocobolo

Joined: Sat Mar 05, 2011 6:20 am
Posts: 277
Location: North East England
First name: nigel
Last Name: forster
City: Newcastle upon tyne
Zip/Postal Code: ne12at
Country: england
Focus: Build
Status: Professional
There seems to be plenty of interest in torrefication just now. I've got access to a company who have the required equipment, but trying to find out specifics is proving difficult. Their experience is in a different field of torrefication.

Anyone got any ideas about the details of the process? The times and temperatures involved for processing spruces? Could save ruining a lot of good spruce!

_________________
nigel

http://www.theluthierblog.com
Top
 Profile  
 
printer2
PostPosted: Thu Jul 02, 2015 7:46 am 
Offline
Cocobolo
Cocobolo

Joined: Tue Mar 26, 2013 6:49 pm
Posts: 403
First name: Fred
City: Winnipeg
Country: Canada
Focus: Build
Status: Amateur
Best to practice on some bad spruce. ;)
Top
 Profile  
 
kencierp
PostPosted: Thu Jul 02, 2015 8:43 am 
Offline
Koa
Koa

Joined: Sat May 19, 2007 11:03 am
Posts: 1737
Location: Litchfield MI
Focus: Build
Status: Professional
You need to get a "Professor Peabody --Way Back machine" like Martin's!

John Greven did mentioned to me that he thought the Martin procedure used lower temperatures and longer cook times than the others.

You might get a feel for the temp and time looking through the Yamaha websites and advertisements they have been doing this for a couple of decades.

_________________
Ken Cierp

http://www.kennethmichaelguitars.com/
Top
 Profile  
 
Bryan Bear
PostPosted: Thu Jul 02, 2015 8:54 am 
Offline
Brazilian Rosewood
Brazilian Rosewood
User avatar

Joined: Thu Feb 12, 2009 12:12 pm
Posts: 3308
First name: Bryan
Last Name: Bear
City: St. Louis
State: Mo
Country: USA
Focus: Build
Status: Amateur
I doubt any of the entities doing this are gong to just tell you the details of their procedure. You will have to experiment and arrive at what you want with trial and error. To me this seems like quite a challenge since no one seems to be able to say what the end result should look/feel like.

_________________
Bryan Bear PMoMC

Take care of your feet, and your feet will take care of you.


These users thanked the author Bryan Bear for the post: Hesh (Thu Jul 02, 2015 12:34 pm)
Top
 Profile  
 
kencierp
PostPosted: Thu Jul 02, 2015 8:59 am 
Offline
Koa
Koa

Joined: Sat May 19, 2007 11:03 am
Posts: 1737
Location: Litchfield MI
Focus: Build
Status: Professional
http://www.yamaha.com/about_yamaha/research/are/

_________________
Ken Cierp

http://www.kennethmichaelguitars.com/
Top
 Profile  
 
J De Rocher
PostPosted: Thu Jul 02, 2015 12:33 pm 
Offline
Contributing Member
Contributing Member
User avatar

Joined: Mon Apr 16, 2012 12:47 pm
Posts: 2574
First name: Jay
Last Name: De Rocher
City: Bothell
State: Washington
May be some relevant info in this patent issued to Yamaha titled "Method for manufacturing modified wood":

http://www.google.com/patents/US6667429

_________________
Once in a while you get shown the light in the strangest of places if you look at it right - Robert Hunter


These users thanked the author J De Rocher for the post (total 2): Bryan Bear (Thu Jul 02, 2015 1:12 pm) • kencierp (Thu Jul 02, 2015 12:52 pm)
Top
 Profile  
 
kencierp
PostPosted: Thu Jul 02, 2015 12:53 pm 
Offline
Koa
Koa

Joined: Sat May 19, 2007 11:03 am
Posts: 1737
Location: Litchfield MI
Focus: Build
Status: Professional
Good thinking Jay! Lots of info on that document.

_________________
Ken Cierp

http://www.kennethmichaelguitars.com/
Top
 Profile  
 
DanSavage
PostPosted: Thu Jul 02, 2015 5:22 pm 
Offline
Cocobolo
Cocobolo

Joined: Tue May 01, 2012 12:54 pm
Posts: 141
Location: Trabuco Canyon, CA
First name: Dan
Last Name: Savage
City: Trabuco Canyon
State: CA
Zip/Postal Code: 92679
Country: USA
More food for thought on torrefaction:

CHEMICAL CHANGES IN FIR WOOD FROM OLD BUILDINGS DUE TO AGING
http://www.cellulosechemtechnol.ro/pdf/ ... .79-88.pdf

Characteristics of aged wood and Japanese traditional coating technology for wood protection
http://www.citedelamusique.fr/pdf/insti ... nglais.pdf

Wood science for conservation of cultural heritage – Florence 2007
www.oapen.org/download?type=document&docid=343706
Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  Page 1 of 1
  [ 8 posts ] 

Board index » Luthiers Forum Rooms » Guitar Building Forum

All times are UTC - 5 hours


Who is online

Users browsing this forum: No registered users and 20 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