The Acoustic Guitar Forum

Go Back   The Acoustic Guitar Forum > General Acoustic Guitar and Amplification Discussion > Custom Shop

Reply
 
Thread Tools
  #121  
Old 12-26-2018, 09:39 AM
David Wren's Avatar
David Wren David Wren is offline
AGF Sponsor
 
Join Date: Feb 2013
Location: Toronto Canada
Posts: 1,837
Default

That purfling/binding combo is intriguing ... I think I'm going to love that!
__________________
David Wren
Reply With Quote
  #122  
Old 12-27-2018, 07:33 AM
Tim McKnight's Avatar
Tim McKnight Tim McKnight is offline
AGF Sponsor
 
Join Date: Oct 2005
Location: Morral, Ohio
Posts: 5,263
Default

Quote:
Originally Posted by David Wren View Post
That purfling/binding combo is intriguing ... I think I'm going to love that!
I agree, its growing on me as well. Sort of like blending traditional with semi modern.
__________________
tim...
www.mcknightguitars.com
Reply With Quote
  #123  
Old 12-27-2018, 08:39 AM
Tim McKnight's Avatar
Tim McKnight Tim McKnight is offline
AGF Sponsor
 
Join Date: Oct 2005
Location: Morral, Ohio
Posts: 5,263
Default

First I'm applying a bead of glue to the binding and purfling channels:










Mary sure is a great help when it comes to binding, which BTW is one of my least favorite parts of the building process. There is simply NO room for error and NO way to mask mistakes if one doesn't do a perfect job of applying the bindings and purflings. Its a very stressful time for me but her helping hands and calming voice are heaven sent.









Mary hands me tape at just the right pace.










Here is a tip that may be helpful to other builders? When you pull the tape too tight, the tape oftentimes breaks at the most inopportune time. Here you can see me pushing the binding in tight against the body, using the plastic handle of an old screwdriver, with the end cut off for safety. I stick one end of the tape down to the sides, push the binding tight against the side with the plastic handle, then pull a little tension on the other end of the tape and stick it down to the top or back, USUALLY before the tape breaks. The screwdriver is doing most of the clamping work instead of pulling too hard on the tape. I've found that I break a lot less tape using this method and it speeds my binding process up quite a bit.

I should mention that this is a two part process for us. I first tack the binding down by sticking the tape first to the top or back and then pull down on the tape to pull the bindings tight into the lower ledge of the binding channel. I do this about every 3" along the length of the binding. Once I reach the other end of the binding I go back to the start and put tape between the 3" spaces but this time I stick the tape first to the sides and pull the bindings inward using the screwdriver handle method mentioned above. This assures a nice tight fit everywhere.











The last step is to clamp the ends and waist. Flat wood cauls are used on the ends. Contoured cauls are used on the waist which fit the waist precisely. The waist is one of the more difficult areas to fit bindings and if there are any gaps this is one of the areas that will give a builder fits. Clamping these areas securely after applying tape will add another layer of safeguarding to assure a precise and gap free fit.










Some builders prefer to use the rope method to secure bindings while waiting for the glue to dry. I have tried the rope method but I usually end up with a tangled mess and a huge ball of string that bounces everywhere. There are other methods to apply purflings and bindings; using scalpel blades, tape and Super Glue. There are many different paper, and plastic tapes to choose from as well. In the end its choosing what method one has the most confidence in using and I'm certainly not saying my method is the best but just another path to the finish line.
__________________
tim...
www.mcknightguitars.com
Reply With Quote
  #124  
Old 12-27-2018, 09:03 AM
Neil K Walk Neil K Walk is offline
Registered User
 
Join Date: Aug 2006
Location: SWPA
Posts: 6,320
Default

Thanks, Tim. Iím making a mental note of it. Iím terrible with losing things though - though itís been awhile since I lost my mind.
__________________
~ Neil (sofa player, shower singer and basement whittler)
Reply With Quote
  #125  
Old 12-28-2018, 06:41 AM
Tim McKnight's Avatar
Tim McKnight Tim McKnight is offline
AGF Sponsor
 
Join Date: Oct 2005
Location: Morral, Ohio
Posts: 5,263
Default

Quote:
Originally Posted by Neil K Walk View Post
Thanks, Tim. Iím making a mental note of it. Iím terrible with losing things though - though itís been awhile since I lost my mind.
Ha ha, sounds too close to home Neil. I make 'written notes" then I forget where I put them so I guess we are in the same boat
__________________
tim...
www.mcknightguitars.com
Reply With Quote
  #126  
Old 12-29-2018, 08:11 AM
Tim McKnight's Avatar
Tim McKnight Tim McKnight is offline
AGF Sponsor
 
Join Date: Oct 2005
Location: Morral, Ohio
Posts: 5,263
Default

Scraping the purfs and bindings flush to the back and top:




















Then scraping the bindings flush with the sides:





__________________
tim...
www.mcknightguitars.com
Reply With Quote
  #127  
Old 12-29-2018, 10:23 AM
Godfather's Avatar
Godfather Godfather is offline
Charter Member
 
Join Date: Dec 2011
Location: Cadillac MI
Posts: 1,560
Default

This is looking great. I cannot wait to see and hear the finished product!
__________________
..."Ask yourself how old would you be
If you didn't know the day you were born"

-Toby Keith

2016 Huss & Dalton T-00 14 Engelmann/Mahogany
2017 Taylor 322e 12 Fret
1965 Fender Villager 12 String
Reply With Quote
  #128  
Old 12-29-2018, 12:38 PM
David Wren's Avatar
David Wren David Wren is offline
AGF Sponsor
 
Join Date: Feb 2013
Location: Toronto Canada
Posts: 1,837
Default

Love that marquetry you used on the back ... I'm working on a little 00 with that on the top and around the peghead right now ... and that Cocobolo ... wow!
__________________
David Wren
Reply With Quote
  #129  
Old 12-29-2018, 03:07 PM
The Growler The Growler is offline
Charter Member
 
Join Date: Jun 2012
Posts: 7,399
Default

Quote:
Originally Posted by David Wren View Post
Love that marquetry you used on the back ... I'm working on a little 00 with that on the top and around the peghead right now ... and that Cocobolo ... wow!
I agree. That looks great. Can't wait to see this completed.
Reply With Quote
  #130  
Old 12-29-2018, 03:18 PM
Guitars44me's Avatar
Guitars44me Guitars44me is offline
Charter Member
 
Join Date: Feb 2014
Location: Mountains east of San Diego
Posts: 3,396
Smile Looking GREAT

Super pretty! Way to go!!!

Not sure how you Fine Luthiers do this all but very glad you do...

Have a wonderful New Years

Paul
__________________
3 John Kinnaird Customs +1 incoming
R.T 2c 12 fret custom
3 90s Taylors
Too many more...
"OLD ENOUGH TO KNOW BETTER, TOO YOUNG TO CARE!"

FOR SALE: Hiscox LA-GAD Ivory/Silver MINT $550
Reply With Quote
  #131  
Old 12-29-2018, 04:39 PM
ruby50 ruby50 is offline
Registered User
 
Join Date: Dec 2013
Location: Eastern Shore MD
Posts: 464
Default

In your post #31 you show your deflection jig - a support at either end and a weight in the middle. I assume you measure how much the plate bends in the middle. My question is, how do you calibrate this? what is the standard"perfect" plate to compare to?

I have wanted to make something like this but wouldn't know what to do with it once I did.

Ed
Reply With Quote
  #132  
Old 12-29-2018, 05:54 PM
Tim McKnight's Avatar
Tim McKnight Tim McKnight is offline
AGF Sponsor
 
Join Date: Oct 2005
Location: Morral, Ohio
Posts: 5,263
Default

Quote:
Originally Posted by Godfather View Post
This is looking great. I cannot wait to see and hear the finished product!
Thanks GF. We are getting closer to the end.



Quote:
Originally Posted by David Wren View Post
Love that marquetry you used on the back ... I'm working on a little 00 with that on the top and around the peghead right now ... and that Cocobolo ... wow!
Thanks David. This truly is a special set of Cocobolo RW. Wish I had more.




Quote:
Originally Posted by The Growler View Post
I agree. That looks great. Can't wait to see this completed.
Thanks Growler.




Quote:
Originally Posted by Guitars44me View Post
Super pretty! Way to go!!!

Not sure how you Fine Luthiers do this all but very glad you do...

Have a wonderful New Years

Paul
We are truly blessed to work with such beautiful woods. Itís certainly a labor of passion. Thanks for the well wishes Paul and we wish you a happy new year too.
__________________
tim...
www.mcknightguitars.com
Reply With Quote
  #133  
Old 12-29-2018, 06:05 PM
Tim McKnight's Avatar
Tim McKnight Tim McKnight is offline
AGF Sponsor
 
Join Date: Oct 2005
Location: Morral, Ohio
Posts: 5,263
Default

Quote:
Originally Posted by ruby50 View Post
In your post #31 you show your deflection jig - a support at either end and a weight in the middle. I assume you measure how much the plate bends in the middle. My question is, how do you calibrate this? what is the standard"perfect" plate to compare to?

I have wanted to make something like this but wouldn't know what to do with it once I did.

Ed
Hi Ed,
Your assumption is correct and my deflection jig does measure the amount of the top or back bending under a given weight. When I studied with Ervin, I was sent home with two tops that are my standards to what I gauge my tops to today.

The best advice i could give you is to build a jig, use the same weight and keep accurate records. You will have to build several guitars with various amounts of deflection to find what standard works best for your building style. Or you could sign up for a class to study with Ervin and shave YEARS off your learning curve. He revolutionized the way that I approach building guitars.
__________________
tim...
www.mcknightguitars.com
Reply With Quote
  #134  
Old 12-30-2018, 06:08 AM
Tim McKnight's Avatar
Tim McKnight Tim McKnight is offline
AGF Sponsor
 
Join Date: Oct 2005
Location: Morral, Ohio
Posts: 5,263
Default

A little last minute surgery









Nope, its not big enough yet:









That little hand saw is just not getting it. I need a power tool:










Finally, the hidden mortise I was looking for:










All cleaned up and ready to fit the neck:
__________________
tim...
www.mcknightguitars.com
Reply With Quote
  #135  
Old 12-30-2018, 04:31 PM
Kenneth Casper's Avatar
Kenneth Casper Kenneth Casper is offline
AGF Sponsor
 
Join Date: Jun 2013
Location: SE Michigan
Posts: 211
Default

Love that photo and of course the work, Tim! That particular part of the build is a bit of an unveiling. It is really satisfying to scrap away the glue and excess wood to reveal nice tight bindings and purflings. Well done!

Ken


[QUOTE=Tim McKnight;5932296]Scraping the purfs and bindings flush to the back and top:

Reply With Quote
Reply

  The Acoustic Guitar Forum > General Acoustic Guitar and Amplification Discussion > Custom Shop

Thread Tools



All times are GMT -6. The time now is 06:54 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Copyright ©2000 - 2018, The Acoustic Guitar Forum
vB Ad Management by =RedTyger=