Portland Guitar Co.

Designing and Building
Custom Handcrafted
Guitars, Ukuleles
and Accessories

Portland Guitar Co. | Portland Oregon | Contact Jay Dickinson-503.245.3276 | jay@portlandguitar.com

Home | Orders & Sales | Photo Gallery | Current Builds | Finished Builds

Rosettes & Marquetry |Shop Tour | Biography | News

Engineered Braces | Tilt Action Neck | Split Saddle Bridge | Split Saddle Nut


Portland Guitar Pretty Good Intonation (PGPG) System

Short Version | Introduction | Intonation Errors | Analysis | PG Approach | Comparisons | Conclusion

Finished Build

Small Jumbo Model For Joe E.

JM 1.5.28 Small Jumbo

16" Lower Bout
Figured Walnut Body
Sitka Spruce Top
Ebony Fretboard
User Adjustable Tilt Action Mahogany Neck, 26" Scale Length
Maple Binding, Bloodwood Striping

Page 2

(26) 22-Sept-2009
In this image I am trimming down the excess on the sides.  I have carefully outlined the shape of the sides.

(27) 22-Sept-2009
And the ends get trimmed off in the band saw

(28) 22-Sept-2009
Now I am getting read to install the heal and tail blocks.  First I have to trim the kerfing off to make a snug fit.

(29) 22-Sept-2009
Here we can see the sides with the kerfing removed.

(30) 22-Sept-2009
The heal block makes a snug fit inbetween the kerfing.

(31) 22-Sept-2009
Now, with everything in the form, the sides get glued together with the heal and tail block.

(32) 22-Sept-2009
And when it is all dried it comes out of the forms and with a little imagination you can just see a guitar in there somewhere.

(33) 22-Sept-2009
Next I am turning my attention to setting the rosette.  Here I am cutting a piece of Zircote into 1/4 of a ring.

(34) 22-Sept-2009
And we see here the quad matched pieces from the Zircote.

(35) 22-Sept-2009
Before I can set the rosette, I have to make some blood wood strips.  I am using my small band saw for this.

(36) 22-Sept-2009
Now to the top.  The first thing I will do is cut a channel out of the top to accept the Zircote ring.

(37) 22-Sept-2009
Here we see one of the pieces of the Zircote ring sitting in its channel.

(38) 22-Sept-2009
Two pieces are installed with two left to go.

(39) 22-Sept-2009
And finally all four pieces are in.  

(40) 22-Sept-2009
In this picture I am  using a circle form and a heat gun to bend the purfling pieces that will outline the Zircote ring.

(41) 22-Sept-2009
And the bent pieces of purfling easily go in the channel.

(42) 22-Sept-2009
Here we see a close up of the herringbone purfling and the blood wood strip.

(43) 22-Sept-2009
Finally the sound hole gets cut out and then the top is sanded flush and the top is sanded down to dimension by sanding the back.

(44) 22-Sept-2009
Here we see the top with the rosette.

(45) 22-Sept-2009
And here is the rosette with the plates that we will use for the contra-rosette showing through the sound hole.