Australian/New Zealand Luthiers Forum

Pretty simple jig, consists of a recycled fretboard, a movable nut and saddle, which are tapered so I could slide in and out to adjust string height, the feeler guage stuck in the middle sets relief and a old chinese tuner with a bridge pin stuck in the rear, the app is ap tuner for android, it cost...

nut forum.pdf here is the offsets I used, the spacing between the sets is uniform, the distance between the strings is adjusted for string width, still some room for experimentation , the playability is really good, I can't stress enough how loud this thing is especially with the soundport, at leas...

no it would be 12 the first cents error listed is at the 1st fret all based as close as i could get to zero in open strings, comp numbers were derived using a jig with a movable nut and bridge for each string including the octaves then drawen on cad the saddle used the numbers I came up with plus ju...

here is the final freq chart main air 108 first coupled 186

Here is the result, great sounding 12 string, very, very loud, completely compensated nut and saddle cut on my small cnc, set up is as follows. string height at 12 fret low e .080 high e .070 relief < .010 but > .005, string height at 1st fret .013, .015, for e and b .019 for the rest of the strings...

same reamer I bought at harbor freight

I use a cad drawn scale , pointer attached to a aligator clip and a cheap dial indicator holder from harbor freight

Have you considered water based lacquers??

I posed this question on the OLF and got some mixed answers...I am working on #17 and have only used wood for bindings, I ordered some celluloid bindings and purflings from China," I love EBAY" and thought I would try them on this project,,, for those that have used both what are your opinions, how ...

I am retopping a 12 string I built a couple of years ago, there were several things I didn't like about it , neck profile , string spacing , and the sound....which I attributed to being over braced and too stiff.. so the new top is falcate braced, leaving the braces .200 thick and .350 tall, or at t...

I laminate 2 pieces of spruce, .080 to .090 thick.. 3/4 inch wide , lightly radius both sides in the radius dish and then cut in two pieces in half and finish to the correct height...not sure if the radius is necessary but doesn't hurt...

Hmm interesting concept the hose analogy!!! :cl I have a new small cnc that opens up a lot of new possibilities in soundhole shape...here is a practice soundboard I was playing with and got me to thinking about the shape, seems to me that as long as the area is the same it should be ok, but I am no ...

do you think that altering the soundhole shape , as long as the same area is maintained would effect low freq resonances?????????? i.e. oval, triangle etc?????

I questioned it too ...measurements are 567 by 250 by 5.05 thick weight 267 g
I haven't thinned the panel yet but the thichness is very consistent and a perfectly quartered piece...

I have two builds under my belt using the spread sheet to calculate thickness...my 15th and 16th builds... I was measuring some tops I have for the next two builds ..here are some numbers,.... then a question??? #15 was Sitka density measured 404 top thickness , in inch's, .103 #16 was Euro spruce d...

I use it on windows 8!! no problems,Va 8

I managed to get everything under control...with the same results in open office calc, so I acquired excel 2010 and now my answers are in line with yours...

I am using open office calc...my spread sheet comes out to 2.99 for the sample used in table 4.5-3 instead of 2.73 ..close :cl but for some of the formula's I have simply divided by 1000 i.e El and Ec to get the decimal point in the correct place, and why do I have to enter the panel length and widt...

I have never seen a combination router / polisher bit???!!!!!!!

what kind of bit are you using, I have similar jig based off of Todd Stocks design on the OLF, and use a mortise bit which if done smoothly and evenly works great....

Trying to avoid math as much as possible I rigged this up tonight to check the deflection on my OLF challenge build ..works pretty good, I drew up the scale on my cad program and is held in place by a telescoping magnetic pick up tool and attached to a cheap harbor freight dial indicator base, the p...

I have modified my jig for more accuracy..and it works well...got that part...I have six runners on the jig for the six strings...my question is on a 12 string I would assume the octave strings are compensated differently on the g thru low e...???? do you have a jig with 10 runners ???

Trevor , what kind of setup do you use for a 12 string compensated nut????
would you also mind sharing your 12 string nut offsets???

thanks

not yet, guitar has been finished for several months and sounds really good, prototype design i have another in process with falcate bracing so i can compare

numbers are 103 , 185, 194 ,218 , 244 , 283, 327 , 389 , 456

finished steel string guitar, strung up