Official Luthiers Forum!

Solely owned and operated by Lance Kragenbrink
It is currently Fri Nov 27, 2020 5:28 pm


All times are UTC - 5 hours


Forum rules


Same rules apply to all forums at the Luthiers Forum.




Post new topic Reply to topic  [ 10 posts ] 
Author Message
PostPosted: Fri Nov 20, 2020 8:22 pm 
Offline
Contributing Member
Contributing Member
User avatar

Joined: Mon Apr 16, 2012 12:47 pm
Posts: 1883
First name: Jay
Last Name: De Rocher
City: Bothell
State: Washington
This one is going be heading off to Colorado after it has had a chance to settle in for final tweaks. In terms of the woods used, it's a twin of the prototype I built last spring. Sitka spruce top; claro walnut back, sides, headplate, and rosette ring; khaya neck; Indian rosewood fingerboard, bridge, and binding. The scale length is 20". The body is similar in size that of a baritone ukulele. The lower bout is 10 1/2" across.

I lightened up the bracing a bit on this one compared to the prototype. I tapered the lower x-brace arms more and scalloped their ends further back from the rims. Also reduced the height of the tonebar a bit. It sounds a bit louder. I like how it sounds. At least as good as the first one. I'll see how much it changes over the next few days.

The most significant change I made was to use standard guitar fretwire (LMI FW74) instead of smaller mandolin fretwire. The taller height of the wire improved the playability enough that I plan to refret the prototype.

Attachment:
Octave mando 012 1rr.jpg

Attachment:
Octave mando 012 2rr.jpg

Attachment:
Octave mando 012 3rr.jpg

Attachment:
Octave mando 012 4rr.jpg

Attachment:
Octave mando 012 5rr.jpg

Attachment:
Octave mando 012 6rr.jpg

Attachment:
Octave mando 012 7rr.jpg

Attachment:
Octave mando 012 8rr.jpg


You do not have the required permissions to view the files attached to this post.

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


Last edited by J De Rocher on Fri Nov 20, 2020 8:29 pm, edited 1 time in total.

Top
 Profile  
 
PostPosted: Fri Nov 20, 2020 8:23 pm 
Offline
Contributing Member
Contributing Member
User avatar

Joined: Mon Apr 16, 2012 12:47 pm
Posts: 1883
First name: Jay
Last Name: De Rocher
City: Bothell
State: Washington
Two more:

Attachment:
Octave mando 012 9rr.jpg

Attachment:
Octave mando 012 10rr.jpg


You do not have the required permissions to view the files attached to this post.

_________________
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: Pmaj7 (Sat Nov 21, 2020 11:13 am)
Top
 Profile  
 
PostPosted: Sat Nov 21, 2020 12:26 am 
Offline
Contributing Member
Contributing Member
User avatar

Joined: Sun Mar 06, 2011 12:04 am
Posts: 4480
First name: Chris
Last Name: Pile
City: Wichita
State: Kansas
Country: Good old US of A
Focus: Repair
Status: Professional
Yeah, man.

_________________
"Act your age, not your shoe size" - Prince



These users thanked the author Chris Pile for the post: J De Rocher (Sat Nov 21, 2020 1:11 am)
Top
 Profile  
 
PostPosted: Sat Nov 21, 2020 10:44 am 
Offline
Brazilian Rosewood
Brazilian Rosewood
User avatar

Joined: Mon Jul 27, 2015 8:21 am
Posts: 2026
First name: Brad
Last Name: Combs
Focus: Build
Status: Amateur
Seriously a beauty! Do you have a sound clip of either one? This is the instrument Sarah Jarosz plays?


Sent from my iPhone using Tapatalk Pro

_________________
"Is this the one where I trot downfield and act like I'm lost ?" - Billy Bob



These users thanked the author bcombs510 for the post: J De Rocher (Sat Nov 21, 2020 3:08 pm)
Top
 Profile  
 
PostPosted: Sat Nov 21, 2020 10:53 am 
Offline
Cocobolo
Cocobolo

Joined: Fri Sep 11, 2015 5:23 pm
Posts: 230
First name: Brad
Last Name: Hall
City: Windsor
State: Ca.
Zip/Postal Code: 95492
Country: USA
Focus: Build
Status: Amateur
Superb workmanship and design. I too would like to hear a sound clip.

_________________
Brad Hall
Mystic Dawg Guitars



These users thanked the author BradHall for the post: J De Rocher (Sat Nov 21, 2020 3:09 pm)
Top
 Profile  
 
PostPosted: Sat Nov 21, 2020 1:00 pm 
Offline
Contributing Member
Contributing Member
User avatar

Joined: Sun Mar 06, 2011 12:04 am
Posts: 4480
First name: Chris
Last Name: Pile
City: Wichita
State: Kansas
Country: Good old US of A
Focus: Repair
Status: Professional
Quote:
This is the instrument Sarah Jarosz plays?


Sarah is quite the multi-instrumentalist.

_________________
"Act your age, not your shoe size" - Prince


Top
 Profile  
 
PostPosted: Sat Nov 21, 2020 1:19 pm 
Offline
Contributing Member
Contributing Member
User avatar

Joined: Mon Apr 16, 2012 12:47 pm
Posts: 1883
First name: Jay
Last Name: De Rocher
City: Bothell
State: Washington
Sarah Jarosz does play an octave mandolin (among other instruments), but hers has an archtop guitar type body.

_________________
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: bcombs510 (Mon Nov 23, 2020 8:19 pm)
Top
 Profile  
 
PostPosted: Sat Nov 21, 2020 3:03 pm 
Offline
Contributing Member
Contributing Member
User avatar

Joined: Mon Apr 16, 2012 12:47 pm
Posts: 1883
First name: Jay
Last Name: De Rocher
City: Bothell
State: Washington
bcombs510 wrote:
Seriously a beauty! Do you have a sound clip of either one? This is the instrument Sarah Jarosz plays?


Sent from my iPhone using Tapatalk Pro


Here are a couple short videos of how the prototype sounds. I recorded them using my iphone so take that into account. In the second video playing single note stuff, you can hear bit of string buzz that was caused by using the short mandolin fretwire I used on that one. The short height of that fretwire means that if you place your finger any distance away from the back of the fret, the string bottoms out on the fretboard right away and you don't get enough downward string pressure on the fret to prevent some buzz when picking with a thick pick. The higher fretwire I used on the new octave mando solved that problem.

https://youtu.be/8XDbUfs_JC8
https://youtu.be/K6fdX6FO4Eg

_________________
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: bcombs510 (Mon Nov 23, 2020 8:19 pm)
Top
 Profile  
 
PostPosted: Sat Nov 21, 2020 4:05 pm 
Offline
Contributing Member
Contributing Member
User avatar

Joined: Sun Mar 06, 2011 12:04 am
Posts: 4480
First name: Chris
Last Name: Pile
City: Wichita
State: Kansas
Country: Good old US of A
Focus: Repair
Status: Professional
Very nice.

_________________
"Act your age, not your shoe size" - Prince



These users thanked the author Chris Pile for the post: bcombs510 (Mon Nov 23, 2020 8:19 pm)
Top
 Profile  
 
PostPosted: Sun Nov 22, 2020 9:22 am 
Offline
Contributing Member
Contributing Member

Joined: Sun Feb 17, 2013 4:58 pm
Posts: 1349
First name: Ed
Last Name: Minch
City: Chestertown
State: MD
Zip/Postal Code: 21620
Country: United States
Focus: Build
Status: Amateur
Nicely done

Ed M



These users thanked the author Ruby50 for the post (total 2): bcombs510 (Mon Nov 23, 2020 8:19 pm) • J De Rocher (Sun Nov 22, 2020 7:39 pm)
Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 10 posts ] 

All times are UTC - 5 hours


Who is online

Users browsing this forum: No registered users and 1 guest


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