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Private member DiscussionAcoustic Repair

76’ D-35 neck reset

Hey looths, Thoughts on process on this here guitar. I have a D-35 that has… 1) a drastic bow in the neck 2) quite a shallow neck angle So diagnosis is, without an adjustable rod, I will need to compression fret this neck to get it back straight, and then proceed with a neck reset. I’m wondering how fellow looths would approach this. Pull the neck and do the refret, then adjust the angle. Or do the reftret, and get the neck relief where we…

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Thanks @member and @member for the tips. I’m ordering CF rods now and will definitely install them. I’ve done 20-30 neck resets at this point and there’s still two points that give me gru…
Private member DiscussionFinish Repair

Taylor 416 ce heavy blushing finish problem

Hello guys Someone get me this Taylor c416 to my workshop. Alot of blushing and milky finish . What are ur recommendations Shall I sand it ? Or any other tricks the client does mind the scratches. Note I measured the wood humidity is 15 %

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I send it with 400 600 1000 1200 till 3000 and polish it the cloudness didn't go . I think I HV to refinish it again ?
Private member DiscussionShop Organisation

Shop humidity: Am I nuts to focus on dew point instead of relative humidity?

Not sure if this is the best place for this, but whatever. I need somebody to check my logic here--I could be completely wrong in my thinking. I'm about to start up my new shop in Ireland, and the humidity/temperature situation is VERY different than the Greater Washington DC region. I will also be unlikely to have as complete control over temperature and humidity as I did in our extremely tight, air-conditioned house in the US. I also k…

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Maybe ask other Ireland luths? @member Maybe your shop should be somewhat dryer than the dryest that your customers homes would be?
Private member DiscussionDesign and Testing

Laminating carbon fibre in neck blanks + before and after measurements

Two pieces of maple, each of which were measured beforehand and then cut up and epoxied back together to keep things as consistent as possible. Even the orientation of the grain was the same to avoid any impact of vertical vs horizontal grain lines. The plain maple had one layer of 300gsm 12k unidirectional carbon fibre between each piece, the flame maple had two per lamination, which may be why it sees a smaller gain afterwards? Lots m…

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Thanks for this! I worked with FRPs, carbon fiber, etc. for years as a shipwright and never came across colored product like the Hypetex you mentioned. Very cool! Hypetex makes flax-based and carbon f…
Private member DiscussionGeneral

Sitar repair

Greetings y'all. A customer brought in a sitar to the shop recently. It had loose frets, missing frets, no strings, missing tuning beads, and the few frets remaining on the neck do not appear to be in proper placement. Has anyone ever worked with one? Or repaired one? I'd be ever so grateful for any help or direction. I know about retying frets when they come loose, and I can string and tune one. However starting from scratch is…

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HI there i've repaired sitars I've studied playing them as well i may be able to help ill come up with a link or two to I've found helpful Feel free to contact me if you'd like
Private member DiscussionDesign and Testing

Tips for measuring and drawing plans?

Hi dear luthiers, I want to build a copy of a vintage Gibson acoustic. Therefore I need to draw a good plan. Do you have good tips of how to measure the guitar, especially the interieur like braces or the back+side thickness? Do you have a certain schedule, that you follow? For the position of the braces I will use magnets. But the height, thickness and profile, how do you adress this? Thanks a lot in advance!

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Thanks a lot fir the links :-)
Private member DiscussionDesign and Testing

Vibrational Stiffness

@member @member I have a question for you. I'm starting to measure spruce for a couple of classical guitars I'm going to make. I used structured sides (I'm calling them cored) on one of my last guitars and it came out notably great. I accidentally thinned the top more than I might have and it seemed to work very well. My thought is that the sides are so stiff that it's allowing the top to survive structurally even…

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I’m running structured sides for all my builds. Though I’m debating doing a typical side build for other reasons soon regarding my neck joint at cutaway. The way I understand the structured sides is t…
Private member DiscussionDesign and Testing

Community spread sheet

I was thinking it would be kind of cool to have a community spread sheet for guitars. Repair guys see a huge variety of instruments. We could include a REW spectrum as Well as maybe the T(1,1)1 and T(1,1)2 labeled. A monopole mobility measurement and bridge rotation measurement would be great too. All who have Giulianos book can make these measurements easily. It would just be a willingness to share and input data for the community.

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Hello everyone It's a great idea Anthony; I would say that we can keep the DevTools sheet, and design together a generic acoustic guitar SpekSheet, that we can use to build a shared database. If it's OK…
Private member DiscussionNeck Reset Database

Stuff to include in your Neck Reset Database post

This neck reset database is going to be massively useful. If you come across something new or weird, add a topic here. You know the sort of info that'll be good here: For the title, maybe use the instrument model (and a year if possible). Obviously add a photo or two. If you can, include some measurements (or place a ruler in the photo). That'll help with stuff like finding dovetail pockets for drilling. Anything that could trip up an unsu…

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