Australian/New Zealand Luthiers Forum

Pretty amazing work to build the mold. I will be interested to see the pictures of the layup for the cases.

That rosette sure looks good. I have a stack of veneers, I just have not been able to push myself to make my own rosette. Yours is certainly an inspiration.

What kind of low spots? I sand spruce across the grain so that I do not get ridges that are formed from the softer and harder grain lines. Scraping spruce also results in ridge lines. I have also found a random orbital sander helps get the top smooth. I would hate to put epoxy on the top, but I have...

Gibson Acoustics use bolts (ovations too) It helps when the crappy glue joint lets go Somehow Martins seem to manage fine without them. I've heard it's a common repair on old Martins. Resetting the bridge that is. There was a period of time that Martin put the bridges in the wrong spot, they sort o...

Well perseverance paid off, it looks good. Are you making the OM 14 frets to the body? I did that by request on a falcate 000. Turned out OK but I like the sound of my 12 fret to body more.

Dave that looks neater than mine! I will be interested in the tap spectrum once you get the box closed and then with strings. I am right behind you with another classical.

Well done, John. It seems like you got a successful outcome there. If you want a little more treble, you might get there using fluorocarbon strings. Hard to tell from the pics, but what you have on looks more like nylon than fluorocarbon. Having worked through the whole book pretty well now, did yo...

Thanks Dave and Miguel, Dave, I will want to know how yours turns out. I had my brace at 6 mm but with this second one I would at least have them at 7 mm maybe 8 mm I still want to think it over as I was down a bit more than 10 hertz from my target of 190 Hz for the top. I did post some recording of...

Thank you Trevor,

Unfortunately my only set.

DarwinStrings wrote:If you are tapping it right for the Elong and have your mic in the right position then it should be that peak of greater amplitude.

Thanks, I am holding the node tapping at the anti-node, I have the mic at the anti node. I have done it a bunch of times and always looks the same.

I was doing some tap testing on a Panama Rosewood plate to thickness for a classical. After my first pass I had some eyepopping numbers, So I went back and looked at the graphs. Here are my results for the long grain frequency. I originally picked the 54 Hz, but I do see a small peak at 33.7 Hz that...

I want one!

I can not really answer your questions about what you should do. But building a few of falcate braced guitars, including a copy of the Medium sized one you are building, I am finding that my top resonances are dropping around 10 Hz from where you are just closed to when the guitar is strung up. I ma...

Thank you Markus, The guitar has really opend up since I originally posted. It is a very good sounding classical, with the positive falcate characteristics I hoped for. My classical guitar instructor really liked it. He said that it has a great voice, is very quick to follow dynamic changes, great s...

Thank you Markus,

I was surprised by the change to the top value from before strings and lowering the back resonance.

87Hz T(1,1)1 => 88.6 hz,
187Hz T(1,1)2 => 178.3 hz
and
238Hz T (1,1)3 => 224 hz

With regard to the extra peaks, this looked like my plot when I was over driving the microphone input; to much gain. Like yours I had the correct peaks with bunches of others.

I completed my first falcate classical. This is my best sounding classical guitar. I did miss my target frequency on the top. As seen in the figure below the top low around 178 Hz instead of 190 Hz for the top. This lower frequency puts the top and the Air resonance an octave apart 88.6 Hz. I am not...

... My target top frequency of 190 is a bit higher than the 180 target for the SS I made, but taking into account the difference in the effect of a steel string bridge vs a classical bridge I will for this exercise ignore this difference. ... Just to close the loop on my posts in this thread, I com...

Yes lower than my target. I managed to get it just like my steel sting, I lowered the falcate brace and also lowered the mass of the top using the classical target. All and all I managed to balance the two parameters. Next time I will leave the braces a bit taller. But now I have one data point. Th...

Yes lower than my target. I managed to get it just like my steel sting, I lowered the falcate brace and also lowered the mass of the top using the classical target. All and all I managed to balance the two parameters. Next time I will leave the braces a bit taller. But now I have one data point. The...

Thanks, I did check out my strat as well. So the spring gives enough push back to adjust and then you lock the whole stack with the side screw. I get it now. That is a lot simpler than I was thinking.

With the bridge glued on I did a tap test of my falcate classical. I think it came out with working values. Depending what happens with the strings, I can add mass to the sides if I want to lower the top off F# (I know it is right on F# as I have my falcate SS guitar on the wall with the g string tu...

This is not the jig that Trevor uses to machine his compensated nuts. He has a much more elegant jig that allows him to adjust the compensation he needs for each string attach a sized nut blank to the jig and machine the nut using a drill press as a pin router. I could not get together everything I ...

Is there a standard part that can lock the adjustment screw in tight but still allow the screw to turn. I suppose some sort of bearing with a set screw. Maybe two nuts locked against each other and a nylon washer. Something tight but still allows the adjustment. I assume there is something like that...

I have some 3/8" brass bar stock on order. So I will give it a go next guitar.