Rzepka Strings

What’s New

News, concerts, records, and the latest from the workbench.

Another chladni pattern, this one on a braced spruce top somewhere around 600 Hz. ... See MoreSee Less

Another chladni pattern, this one on a braced spruce top somewhere around 600 Hz.

Love me a good Japanese paring chisel for scalloping braces ... See MoreSee Less

Love me a good Japanese paring chisel for scalloping braces

 

Comment on Facebook

Very cool bracing pattern! I think I can hear that transverse brace!

Brace making time! ... See MoreSee Less

Brace making time!

Chladni pattern on an unbraced cedar top vibrating at 104 Hz. I've just starting documenting these in all of my unbraced and braced tops after taking them to final thickness. After I get a big enough sample size I'm going to figure out the signal in the noise (I hope!) and look for connections between vibrational modes and tone qualities in the finished guitars. Lutherie is fun...and crazy-making. ... See MoreSee Less

Chladni pattern on an unbraced cedar top vibrating at 104 Hz. Ive just starting documenting these in all of my unbraced and braced tops after taking them to final thickness. After I get a big enough sample size Im going to figure out the signal in the noise (I hope!) and look for connections between vibrational modes and tone qualities in the finished guitars. Lutherie is fun...and crazy-making.

 

Comment on Facebook

if I was king of everything, I'd be your apprentice for a while...

Joining a sweet cedar top for the the next round of guitars-- this top is very stiff and will be paired with a painfully beautiful camatillo rosewood back (photos later) for a crisp, brilliant and deeply rich sound. ... See MoreSee Less

Joining a sweet cedar top for the the next round of guitars-- this top is very stiff and will be paired with a painfully beautiful camatillo rosewood back (photos later) for a crisp, brilliant and deeply rich sound.

2 months ago

Toby Rzepka, Luthier

Thanks #laguitarracalifornia for a fantastic 2017 festival. So much fun hearing and hanging out with so many great guitarists and luthiers. Looking forward to 2019! ... See MoreSee Less

Thanks #laguitarracalifornia for a fantastic 2017 festival. So much fun hearing and hanging out with so many great guitarists and luthiers. Looking forward to 2019!

2 months ago

Toby Rzepka, Luthier

OK California, I get it. ... See MoreSee Less

OK California, I get it.

 

Comment on Facebook

Hahaha when are we all moving there?

2 months ago

Toby Rzepka, Luthier

San Luis Obispo or bust! #laguitarracalifornia
#madeinmaine #lutherie #guitarmaking
... See MoreSee Less

San Luis Obispo or bust! #laguitarracalifornia
#madeinmaine #lutherie #guitarmaking

 

Comment on Facebook

Good luck out there! Spread the gospel!

Yay!!!!

Go get 'em, sir!

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2 months ago

Toby Rzepka, Luthier

This handy little scissor jack almost makes gluing loose back braces not terribly awkward. Almost...
#madeinmaine #lutherie #classicalguitar #guitarrepair
... See MoreSee Less

This handy little scissor jack almost makes gluing loose back braces not terribly awkward. Almost...
#madeinmaine #lutherie #classicalguitar #guitarrepair

5 months ago

Toby Rzepka, Luthier

String up time! #lutherie #madeinmaine #classicalguitar ... See MoreSee Less

String up time! #lutherie #madeinmaine #classicalguitar

 

Comment on Facebook

Pegs or slotted?

5 months ago

Toby Rzepka, Luthier

Nothing takes a French polish like cocobolo ... See MoreSee Less

Nothing takes a French polish like cocobolo

I have a new classical guitar album available to stream on my website, featuring a guitar constructed by Toby Rzepka.

joehartnettguitar.com/index.php/albums/

Johann Sebastian Bach (1685 - 1750)
1. Suite in e-minor, BWV 996……………………………………... 18:38
Prelude • Presto • Allemande • Courante • Sarabande • Bourrée • Gigue
2. Chaconne, BWV 1004…………………………………………… 13:41
Mauro Giuliani (1781 - 1829)
3. Gran Sonata Eroica, Op. 150……………………………………. 16:22
Eduardo Sainz de la Maza (1903 - 1982)
4. Campanas del Alba………………………………………………. 4:49
Joe Hartnett (1984)
5. Villa-Lobos Variation……………………………………………. 2:43
Joe Hartnett, Guitar Total time: 55’33
"Guitar" by Joe Hartnett
All music performed, recorded and produced by Joe Hartnett. Joe plays guitars constructed by the great luthier, Toby Rzepka.
© 2017 Joe Hartnett.
www.joehartnettguitar.com
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7 months ago

Toby Rzepka, Luthier

... See MoreSee Less

 

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New bracing! Is this on cedar?

I find this image just as amazingly beautiful as a finished guitar...

7 months ago

Toby Rzepka, Luthier

Assembly time! ... See MoreSee Less

Assembly time!

9 months ago

Toby Rzepka, Luthier

2017 African blackwood / European spruce concert classical, available for trial. Open, lush sound with creamy, sparkling trebles and lots of power. This is one of my favorite tonewood combinations, and it's well represented in this instrument. Blackwood is rarely found in quartersawn, knot-free billets, and European spruce is becoming very difficult to find without runout in the grain. I work very hard to find wood that meets my criteria, but guitars like this one consistently remind me that it's worth the effort!

#madeinmaine #lutherie #classicalguitar #dreamguitar
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Toby, Toby, Toby. Flawless.

Awesome looking guitar

9 months ago

Toby Rzepka, Luthier

2017 camatillo rosewood and western red cedar concert classical, fresh off the finishing bench and ready for adoption. Powerful, focused tone with excellent clarity and sweetness. Contact me for details.

#madeinmaine #classicalguitar #lutherie #dreamguitar
... See MoreSee Less

 

Comment on Facebook

Dude, fantastic aesthetic on this one!

You got a close-up of the inlay work around the sound hole?

Seriously beautiful, Jones!

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10 months ago

Toby Rzepka, Luthier

Brazilian rosewood bridges finished with Danish oil, ready for gluing ... See MoreSee Less

Brazilian rosewood bridges finished with Danish oil, ready for gluing

 

Comment on Facebook

Stop torturing me!

11 months ago

Toby Rzepka, Luthier

Neck carvin' ... See MoreSee Less

Neck carvin

11 months ago

Toby Rzepka, Luthier

One of my favorite steps in guitar making is planing down the bindings and purfling that comprise the decorative edging of the body. After all the tedious work of fitting and gluing, it's always satisfying to flush everything down and see the result. This here is an ebony binding on a Brazilian rosewood body. ... See MoreSee Less

One of my favorite steps in guitar making is planing down the bindings and purfling that comprise the decorative edging of the body. After all the tedious work of fitting and gluing, its always satisfying to flush everything down and see the result. This here is an ebony binding on a Brazilian rosewood body.

 

Comment on Facebook

I enjoy seeing your work!

12 months ago

Toby Rzepka, Luthier

Closing up no. 50! I think it was Velasquez that said after the first 100 guitars you can claim to know something about guitar making. Well, I'm halfway there... ... See MoreSee Less

Closing up no. 50! I think it was Velasquez that said after the first 100 guitars you can claim to know something about guitar making. Well, Im halfway there...

Sunlight streaming through spruce ... See MoreSee Less

Sunlight streaming through spruce

Assembly time - - these little mahogany tentallones join the African blackwood sides to the German spruce sound board. ... See MoreSee Less

Assembly time - - these little mahogany tentallones join the African blackwood sides to the German spruce sound board.

 

Comment on Facebook

Nice! How did your double top turn out?

Looks delicious, luthier. I am a termite.

Gluing the bridge on my new prototype, a double-top with an internal lattice bracing. No nomex or other synthetic materials, just spruce. Can't wait to string it up tomorrow! ... See MoreSee Less

Gluing the bridge on my new prototype, a double-top with an internal lattice bracing. No nomex or other synthetic materials, just spruce.  Cant wait to string it up tomorrow!

 

Comment on Facebook

Sweeeeet!

Very interesting! Please let us know how does it sound.. :-)

Tell us of the sound as you spank the infant on the butt.

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Four Honduras mahogany necks, planed and ready for gluing scarf joints ... See MoreSee Less

Four Honduras mahogany necks, planed and ready for gluing scarf joints

1 years ago

Toby Rzepka, Luthier

Here's a chart of all the sound board wood I've deflection tested over the past few years--the x axis is longitudinal stiffness, y is cross-grain stiffness. The size of the bubble represents density (bigger=denser), and the color identifies the sample species (blue is western red cedar, purple is European spruce, brown is sitka spruce, and yellow is engelmann spruce). Interesting to see how much the species cross over, and what the general trends are.

Cedar is usually assumed to be less dense and more flexible than spruce--here we see that, while generally true for longitudinal stiffness, cross-grain stiffness is usually in the same ball park between the two woods. Similarly, many of the cedar and spruce samples have around the same density--but the stiffest spruce is always significantly denser.

Another interesting observation is that density doesn't correlate that much with cross-grain stiffness--it seems to be mostly longitudinal stiffness that tracks closely with density.
... See MoreSee Less

Heres a chart of all the sound board wood Ive deflection tested over the past few years--the x axis is longitudinal stiffness, y is cross-grain stiffness. The size of the bubble represents density (bigger=denser), and the color identifies the sample species (blue is western red cedar, purple is European spruce, brown is sitka spruce, and yellow is engelmann spruce). Interesting to see how much the species cross over, and what the general trends are. 

Cedar is usually assumed to be less dense and more flexible than spruce--here we see that, while generally true for longitudinal stiffness,  cross-grain stiffness is usually in the same ball park between the two woods. Similarly, many of the cedar and spruce samples have around the same density--but the stiffest spruce is always significantly denser.

Another interesting observation is that density doesnt correlate that much with cross-grain stiffness--it seems to be mostly longitudinal stiffness  that tracks closely with density.

 

Comment on Facebook

What is the upshot for the Sitka?

Cool graph! Did data Dave make that for you?

Fascinating!

cool! miss you guys hope to connect with you this october in maine ... www.youtube.com/watch?v=1VP1WnUw2T0

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Luthièr! How's my double top coming along?! ... See MoreSee Less

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It's got shellac on it! But I'm on kid duty all week this week, so progress is slow...

1 years ago

Toby Rzepka, Luthier

European spruce & Flamed maple concert classical, 2016. Purfling detail based on English viols of the 16th and 17th Centuries. ... See MoreSee Less

 

Comment on Facebook

Swoon

Totally Gorgeous! As a guitarist and cellist, I find this wonderful!

Doing your thing. Bueno

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Gregoíre de la Costa playing his 2014 spruce /blackwood guitar on Star Island last Friday as swallows dived and swooped in the late afternoon sun. Thanks, universe! ... See MoreSee Less

Gregoíre de la Costa playing his 2014 spruce /blackwood guitar on Star Island last Friday as swallows dived and swooped in the late afternoon sun. Thanks, universe!
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