Search found 54 matches

by Josh Humphrey
Sat May 17, 2014 2:53 am
Forum: Flat-Top Acoustic Guitars and Bass Guitars
Topic: My latest build
Replies: 7
Views: 4111

Re: My latest build

Looks great! I haven't seen the Earthwood bass- is the bridge your design? What does the shape accomplish? Ahh, so 'clone' huh- are you a homebrewer too?
by Josh Humphrey
Mon Mar 03, 2014 3:40 pm
Forum: Other Stringed Instruments
Topic: Gurdy-Dulcimer
Replies: 3
Views: 2600

Gurdy-Dulcimer

I have been asked to build this interesting instrument, a hybrid between a dulcimer and hurdy-gurdy. It is essentially laid out like a single-course dulcimer, with Partch-style movable bridges. But it will also feature a crank-operated set of three drone strings. Here is the initial sketch, and I wi...
by Josh Humphrey
Mon Feb 24, 2014 2:33 am
Forum: Flat-Top Acoustic Guitars and Bass Guitars
Topic: Recycled timber small body
Replies: 5
Views: 2064

Re: Recycled timber small body

This is great- can't wait to see the results!
by Josh Humphrey
Tue Oct 15, 2013 1:36 am
Forum: Other Stringed Instruments
Topic: Mbira dulcimer!
Replies: 8
Views: 4865

Re: Mbira dulcimer!

Cool, thanks for the info Nicholas. I like the tone of those mbira/HD instruments- the rod has a great sustain and tone to it. True, it is not laid out like the mbira, which is a very funky layout. It is staying in tune very well now; I think applying all the tension (and I kept changing strings to ...
by Josh Humphrey
Thu Oct 03, 2013 1:51 am
Forum: Other Stringed Instruments
Topic: Cuatro Shaped Object
Replies: 8
Views: 5353

Re: Cuatro Shaped Object

Interesting! I did some repair on a jarana Veracruzana the other day, all carved from a single bock but with the top glued on. It was striking to me indeed. 1260891_662982033724862_1845781973_n.jpg Here you can clearly see the grain continue around from the back through into the sides and neck: 9933...
by Josh Humphrey
Tue Oct 01, 2013 1:12 am
Forum: Other Stringed Instruments
Topic: Mbira dulcimer!
Replies: 8
Views: 4865

Re: Mbira dulcimer!

Jason: yes, on the bass side there are actually three octaves per note. The longer string to the right gets the low note, and one string to the left gets an octave above, and the bridge divides it so that the short portion in front of that is another octave. (3 octaves on 2 strings, if that makes se...
by Josh Humphrey
Mon Sep 30, 2013 2:07 am
Forum: Other Stringed Instruments
Topic: Mbira dulcimer!
Replies: 8
Views: 4865

Re: Mbira dulcimer!

It sounds great, I will upload a soundfile soon. It is strange to play and time consuming to tune! But the notes are full, rich and sustain for a long while. There a re a few notes where I need different string gauges to get the best sound for the pitch. Currently I have .011, .014 and .017 piano wi...
by Josh Humphrey
Mon Sep 30, 2013 2:05 am
Forum: Other Stringed Instruments
Topic: Mbira dulcimer!
Replies: 8
Views: 4865

Re: Mbira dulcimer!

This weekend I had the chance to string it up. DSC_5788.jpg The hitch pins are from 3/16" brass rod I grooved and polished using the drill press as a lathe: DSC_5791.jpg The rosette(s) are inlaid figured myrtle with a shop-made purfling (BRW/maple/mahog) alternated with woodburning: DSC_5792.jpg
by Josh Humphrey
Mon Sep 30, 2013 2:00 am
Forum: Other Stringed Instruments
Topic: Mbira dulcimer!
Replies: 8
Views: 4865

Re: Mbira dulcimer!

I finally had the opportunity to complete this instrument. It started with the frame, in walnut, and the double soundboards, in doug fir:
Frame
Frame
Soundboards
Soundboards
by Josh Humphrey
Mon Sep 30, 2013 1:58 am
Forum: Other Stringed Instruments
Topic: Mbira dulcimer!
Replies: 8
Views: 4865

Mbira dulcimer!

In 2006 I first sketched plans for an idea that intrigued me. The Zimbabwean mbira (thumb piano) is laid out with bass and tenor octaves ascending from the center to the left, and a treble octave ascending from the center to the right. I thought, if this layout could be adapted to a hammered dulcime...
by Josh Humphrey
Tue Apr 02, 2013 2:15 am
Forum: Other Stringed Instruments
Topic: Building a hurdy-gurdy
Replies: 111
Views: 105718

Re: Building a hurdy-gurdy

Fun to watch this! Looking good...
by Josh Humphrey
Mon Mar 25, 2013 12:21 am
Forum: Other Stringed Instruments
Topic: Oud building video
Replies: 7
Views: 4452

Re: Oud building video

Thanks all- I'm glad you're enjoying it! I was really impressed by their editing and film work. Neal- I took the apple down to about .088" , but after gluing I probably scraped off another 10-15 mils. It bent quite easily, but it tended to have a quite a bit of springback, so I would go back and reb...
by Josh Humphrey
Fri Mar 22, 2013 11:18 pm
Forum: Other Stringed Instruments
Topic: Bracing a MandoCello
Replies: 24
Views: 17924

Re: Bracing a MandoCello

Also, just a thought: for pinless bridge, how are you going to accommodate the loop end strings?
by Josh Humphrey
Fri Mar 22, 2013 4:18 pm
Forum: Other Stringed Instruments
Topic: Bracing a MandoCello
Replies: 24
Views: 17924

Re: Bracing a MandoCello

Wow! Just looked at D'addarios Mandocello strings- .074 for the low C!! Holy smokes. I am willing to bet that these are designed for tailpiece instruments. I think for fixed bridge you could try something a little lighter
by Josh Humphrey
Fri Mar 22, 2013 4:16 pm
Forum: Other Stringed Instruments
Topic: Bracing a MandoCello
Replies: 24
Views: 17924

Re: Bracing a MandoCello

Well, for a tailpiece/floating bridge instrument, that amount of tension would make more sense- the break angle could be designed to mitigate the tension onto the soundboard by a desired amount. However, with a fixed bridge system, you are stuck with all of the string tension at the bridge, with no ...
by Josh Humphrey
Fri Mar 22, 2013 3:16 am
Forum: Other Stringed Instruments
Topic: Bracing a MandoCello
Replies: 24
Views: 17924

Re: Bracing a MandoCello

One thing to sort out first is string gauge. Here is what I would do: calculate the total tension of your typical guitar strings with that scale length. That is your baseline; this should give you an idea of what your previous work dealt with. Now, figure the total string tension of the eight string...
by Josh Humphrey
Fri Mar 22, 2013 2:58 am
Forum: Other Stringed Instruments
Topic: Oud building video
Replies: 7
Views: 4452

Oud building video

It's been a while since I posted here, and I would like to share this video. Some students from the U of Oregon were doing a documentary project and wanted to get the construction of an instrument from start to finish. They were able to film most stages of construction of a recent Turkish oud I was ...
by Josh Humphrey
Mon Feb 04, 2013 1:13 am
Forum: Flat-Top Acoustic Guitars and Bass Guitars
Topic: Local materials challenge bass finally done
Replies: 9
Views: 7667

Re: Local materials challenge bass finally done

I like it! I remember being a bit skeptical of the design during the challenge, but the finished product is intriguing. It looks very nice, and the simplicity of the design works! Congratulations
by Josh Humphrey
Mon Jun 18, 2012 3:14 pm
Forum: Flat-Top Acoustic Guitars and Bass Guitars
Topic: Bending inquiry
Replies: 27
Views: 12356

Re: Bending inquiry

Right! That's where we got the idea :D
by Josh Humphrey
Sun Jun 17, 2012 1:27 am
Forum: Flat-Top Acoustic Guitars and Bass Guitars
Topic: Bending inquiry
Replies: 27
Views: 12356

Re: Bending inquiry

I would also add that you should try to get an even heat distribution cross the bending surface of the pipe. If you play with the angle of the torch entering the pipe, you can have the flame heat more evenly from the front to rear of the pipe- otherwise you'll get a hot spot in the middle, which run...