What to Do When you Crack a Side While Bending?

Construction and repair of Classical Guitar and related instruments

What to Do When you Crack a Side While Bending?

Postby Patrick delBosque » Sun Feb 12, 2012 4:13 pm

First time bending sides. Used the LMI side bending machine with Hauser Senior mold (unfortunately the enclosed assembly and use DVD would not work in any of 6 machines/computers I tried it in) and eventually got it assembled correctly using the printed instructions and the online use video by Robert Obrien.
The first side I tried to bend unfortunately cracked around the waist area. Luckily for my wallet this was my "practice" set of 2nd grade wood. The second side bent nicely.
So the bottom line question is can the one good side that I have be salvaged to make something worth playing? If I split it down the middle can I produce a "half depth" instrument with my other practice parts that would be worth the effort? (There is still a need to practice the assembly steps of course, but would the product be worth anything more than a wall-hanging?)
Gracias!
Patrick :oops:
Patrick delBosque
Amateur luthier
 
Posts: 401
Joined: Wed Feb 20, 2008 3:21 am
Location: near Seattle

Re: What to Do When you Crack a Side While Bending?

Postby Michael Thames » Sun Feb 12, 2012 4:56 pm

What to Do When you Crack a Side While Bending?


Don't tell anybody.
Analyzing the strength or hardness of a hammer is useless if you never pound a nail.
User avatar
Michael Thames
Luthier
 
Posts: 1310
Joined: Thu Dec 17, 2009 6:34 pm

Re: What to Do When you Crack a Side While Bending?

Postby Robert Webster » Sun Feb 12, 2012 5:40 pm

Patrick, where do you think Michael gets his headplates from?

Bob
Robert Webster
Luthier
 
Posts: 1297
Joined: Tue May 12, 2009 2:11 am
Location: Gig Harbor, WA

Re: What to Do When you Crack a Side While Bending?

Postby Brian McCombs » Sun Feb 12, 2012 6:25 pm

You could:

Make a headpiece or two out of the broken one.

Rip it into binding/purfling strips.

I have a couple orphan sides....I took one and tapered both ends to my body facet taper angles and i use it as a nice template to draft my body contours. Taper the top and bottom then all you have to do to trace the taper is flip it over, it will work with both sides of the guitar.Beats having to wrap paper or a plastic straight edge around the contours while laying out the taper.

You could kerf an 8 inch section of it so it is real flexible and glue 150 grit onto it. Use it as a sanding block for the waist areas of the sides.
User avatar
Brian McCombs
 
Posts: 326
Joined: Mon Feb 07, 2011 7:55 pm
Location: Union City, Michigan

Re: What to Do When you Crack a Side While Bending?

Postby Patrick delBosque » Sun Feb 12, 2012 7:02 pm

Michael Thames wrote:Don't tell anybody.


Oops!
Patrick
Patrick delBosque
Amateur luthier
 
Posts: 401
Joined: Wed Feb 20, 2008 3:21 am
Location: near Seattle

Re: What to Do When you Crack a Side While Bending?

Postby kiwigeo » Tue Feb 14, 2012 9:52 am

Bindings
kiwigeo
 
Posts: 180
Joined: Sat Nov 27, 2010 10:22 pm

Re: What to Do When you Crack a Side While Bending?

Postby Guitar » Tue Feb 14, 2012 12:37 pm

Did it crack past the point of being repairable with CA and a little sanding?
User avatar
Guitar
 
Posts: 196
Joined: Fri Aug 12, 2011 2:53 am
Location: Chicago

Re: What to Do When you Crack a Side While Bending?

Postby HNLim » Tue Feb 14, 2012 1:59 pm

The question is, can you cover up a cracked sides? For my top of the line Spanish guitar, the maker sure did it for the top.
User avatar
HNLim
 
Posts: 875
Joined: Tue Jul 26, 2011 1:02 am
Location: Singapore

Re: What to Do When you Crack a Side While Bending?

Postby Michael Thames » Tue Feb 14, 2012 2:11 pm

Patrick delBosque wrote:
Michael Thames wrote:Don't tell anybody.


Oops!
Patrick


Actually, this is a good opportunity to try laminated sides!
Analyzing the strength or hardness of a hammer is useless if you never pound a nail.
User avatar
Michael Thames
Luthier
 
Posts: 1310
Joined: Thu Dec 17, 2009 6:34 pm

Re: What to Do When you Crack a Side While Bending?

Postby Section_10 » Tue Feb 14, 2012 3:15 pm

If easily joined together/repaired again it'd make a great interior for a double sided guitar.
User avatar
Section_10
 
Posts: 605
Joined: Thu Mar 29, 2007 7:39 pm

Re: What to Do When you Crack a Side While Bending?

Postby Michael Thames » Tue Feb 14, 2012 4:31 pm

Section_10 wrote:If easily joined together/repaired again it'd make a great interior for a double sided guitar.


Yer late, I just said that.
Analyzing the strength or hardness of a hammer is useless if you never pound a nail.
User avatar
Michael Thames
Luthier
 
Posts: 1310
Joined: Thu Dec 17, 2009 6:34 pm

Re: What to Do When you Crack a Side While Bending?

Postby Section_10 » Tue Feb 14, 2012 7:33 pm

You said "Laminated sides" That's two pieces of .6mm thick veneer

I said double sides. That's 2 pieces of actual sides, much thicker, heavier and reduces vibrations from leaving soundboard.
User avatar
Section_10
 
Posts: 605
Joined: Thu Mar 29, 2007 7:39 pm

Re: What to Do When you Crack a Side While Bending?

Postby Michael Thames » Tue Feb 14, 2012 10:01 pm

Section_10 wrote:You said "Laminated sides" That's two pieces of .6mm thick veneer

I said double sides. That's 2 pieces of actual sides, much thicker, heavier and reduces vibrations from leaving soundboard.


Yer not a guitar maker, "laminated" does not mean a specific thickness.... and a quote is not something you think someone else means.
Analyzing the strength or hardness of a hammer is useless if you never pound a nail.
User avatar
Michael Thames
Luthier
 
Posts: 1310
Joined: Thu Dec 17, 2009 6:34 pm

Re: What to Do When you Crack a Side While Bending?

Postby Section_10 » Tue Feb 14, 2012 10:19 pm

Patrick if you use Double sides, that's 2 SOLID pieces of wood. Very different from Laminated which are multiple very thin pieces glued to each other that not all luthiers have the knowledge of.
Double sides would be valued more since they're solid pieces.
I've had Bernabes, Marvi, Delarues..etc that have successfully used this. Its better than scrapping the wood for smaller pieces, depending on the severity of the crack. They'll have a more focused sound.
User avatar
Section_10
 
Posts: 605
Joined: Thu Mar 29, 2007 7:39 pm

Re: What to Do When you Crack a Side While Bending?

Postby dcarlso3 » Wed Feb 15, 2012 2:21 am

This thread is gonna get good quick...
dcarlso3
 
Posts: 389
Joined: Fri Jul 25, 2008 8:16 pm
Location: Wisconsin, US

Next

Return to Luthiers

Who is online

Users browsing this forum: ace5540, bchi123, CommonCrawl [Bot], Jeff Highland, mk49 and 47 guests