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Private member DiscussionDesign and Testing

Video: Measuring Long, Cross, and Transverse Modes + Thickness Calculator

Hey folks, I put together a video showing how I measure the long, cross, and transverse frequencies on guitar top plates before thicknessing, following the Gore method. I also walk through using the calculator I built (based on Trevor Gore’s equations) to get target thickness and track density / young's modulus. Fair warning: the video’s a bit YouTube-y in tone thumbnail faces, a little energy for the algorithm, but the content is genuine…

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Rick, this is amazing! Thank you so much for creating it and sharing it. I have Trevor’s books but having a calculator to run the equations is really fantastic.
Private member DiscussionShare Your New Builds Content

connect REW with Umik 1 mic

I'm having trouble getting my mic to work with REW. I'm at the beginning of a new build and would like to measure the tonewood properties. I am trying to follow Giuliano's instructions in his book. everything seems to be working but they don't talk to each other. I think its a calibration or pc setting but I'm not very computer savvy and what seems to go without saying needs to be said to me in step by step, very simple language. I…

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I suggest moving the slider on the Windows settings input level to 100%, not exactly sure about the UMIK but most USB mics use unity gain. Then go into the REW software under the "Preferences" drop d…
Private member DiscussionAcoustic Repair

New Gibson L-00 retro with whimpy bridge

Hi Folks. I have a new Gibson L-00 retro on the bench. It came in because the saddle had pulled forward and was extremely loose in the slot. the saddle was a narrow affair measuring out at 3/32. It had buzzing issues as well because saddle was low and neck angle is actually high (straight edge is 5/32 above bridge). Previous looth tried to correct by shimming saddle but recommended me for bridge work. I re-slotted the saddle slot wi…

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Ya…ugly bridge way cheaper then neck agogo which would entail dealing with bridge anyway cause of intonation. Customer may be able to get new one because that’s the obvious problem, but as mentioned,…
Private member DiscussionCAD/CAM

Modeling / improving on dovetail jig

I've seen the Elevate Luthierie jig, and it seems simple enough. One thing I don't like about their explanation video is the handwaving around "set the joint length where you want it"...feels like even with the jig, you have to do too much measuring to make it fit exactly (or within the tolerance you want) Given I can model well enough in Fusion and have a 3D printer, feels like a challenge to take on! As far as I can see, the jig is just…

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I completely designed a elevate style jig in fusion. And have 3d printed it. Its great! If you want the files let me know
Private member DiscussionDesign and Testing

Deflection vs. Frequency for measuring flexural modulus

I've been testing all my top and bracewood to find the best combination of stiffness and density, optimize plate thickness, etc. I started with Nicoletti's spreadsheet which calculates both stiffness and density, but since I was also testing deflection, I decided to compare the flexural modulus using that method (with the formula from T. Gore's book) on the same plates and bracewood. Unfortunately, I'm having trouble getting a satisfa…

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Hello Neil, as you rightly pointed out, they are all in reasonable range for the species, but do not perfectly correlate (at least, not all of them). In my experience, the deflection method is is not v…
Private member DiscussionCNC

CNC errors

I'm fairly new to CNC and am attempting to set up for a fretboard carve. I'm using a one year old ShopBot Desktop Max. This is the first I've found a problem like this. I made some practice blanks and thought I had everything the way I wanted it until I measured me fret distances. Using calipers from the nut to the center for the first fret slot I get 1.399" and I'm expecting 1.4346. I brought up the file and used the measuring too…

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9 times out of ten these issues aren’t the software it’s the CNC itself or order of operations. Something might be binding on your machine causing one of the 3 axis to be out of whack. Im assuming you…
Private member DiscussionElectric Repair

Washburn g10v micro adjust

Hello, Help needed please! 🙏 It’s a Washburn g10v that I am trying to source parts for. The owner wants to do a full restore but we can’t move forward with the job as the trem is missing the micro tuner thumb nuts. The trem is a big old rare thing with 2001 on the edge of it. Please see picture for reference. (Taken from reditt, a common problem it looks like) I have one of the thumb nuts here and I think it’s a #no.5 -44 UNF thread. But it’s…

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Private member DiscussionNeck Reset Database

Gibson J-40

Getting the fingerboard extension off was the hardest part. It required a 1/2 hour at about 230F (measured on the fingerboard surface). The neck join came loose in about 15 minutes using heat sticks and injecting a few cc"s of water every 5 minutes.

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Well, I just don't know. There is a Gibson serial number look up but since they've been absolutely all over the place since the beginning it gets so convoluted. Thanks for posting the serial#. It may…
Private member DiscussionTools and Jigs

Broken hex wrench piece drill jig

I just opened a repair shop and the first repair was to remove a broken 1/8" hex wrench ball end from the truss rod nut of a Turner RB4 Renaissance Bass. I read of all sorts of theories on how to extract/remove. None of them had recorded actual attempts of the theories. There's probably others on here but I haven't found them. The ball end was loose and mangled at the rear of the nut sleeve. I tried fairly benign methods first. Heat…

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Slick move. What a clever setup, well done!
Private member DiscussionTools and Jigs

Top Thickness calculator from the Gore / Gilet books

For folks familiar with the Gore / Gilet books and the top thickness calculations in section 4.5. I made a web based calculator to do the nasty spreadsheet math... So this is for once you've weighed and measured your top plates and then found the long, cross and transverse resonances it gives you the target thickness to hit a particular frequency for the long resonance of the plate. Just sharing so folks don't have to do the math for bu…

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Private member DiscussionAmps, Pickups, and Pedals

Frequencies 2

Hi everyone! Here is a video explaining more about the pickup performance measure and how do I do it. Hope it is useful!

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Private member DiscussionAmps, Pickups, and Pedals

Frequencies

Hey everyone, look at this. I built a system to measure the pickups but not only the resistance, it also measures the peak of resonance of the frequencies and the volume that you get in those frequencies. I made it with a bobin, a pickup and some testers. It is really cool because you get more specific results as how the pickup will sound and it’s performance.

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Here is the link to the video https://youtu.be/lsLV_6JI82k
Private member DiscussionAcoustic Builds

Gibson LG Plans?

Hi, I am thinking about building a copy of a Gibson LG. I measured an old LG0, that a friend of mine owns. For my own build I want to go for X Bracing. I do not have acces to an LG1, 2 or 3. Does anyone have a plan with measurements for the top bracings you want to sell? Thanks, Jacob

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Private member DiscussionElectric Repair

Sourcing Concentric Volume/Tone pots for Sire Marcus Miller Bass

I've had a customer bring in a Sire Marcus Miller with a faulty volume pot. Currently I have an alpha concentric pot installed but it's too big for the cavity with all the wiring, pre-amp etc. and the knobs don't fit the shaft. I tried using insulation to widen the shafts but the discrepancy between the centre of each knob (Upper and Lower) has them bumping up against eachother and moving in tandem. Does anyone know where to source thi…

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Private member DiscussionBUY! BUY! BUY!

Quilted Mahogany from "The Tree"

This was a large bed frame with end tables built almost entirely from sold boards from "The Tree". Having been a bed frame with cabinets and drawers there are lots of fastener holes and such to work around. According to some educated sleuthage and measuring using guitar templates, I estimate that there are 6-8 back and side sets with no holes or defects to be had with careful resawing. More sets for sure if a builder is willing to artfu…

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sounds great, thank you for reaching out. I'll call when I get a chance