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Private member DiscussionAcoustic Repair

More Tanglewood bridge issues

The COE reviewed this bridge disaster in January, a Tanglewood acoustic given to me that had the bridge ripped off as well as some of the underlying top, and an attempted repair with spruce veneer (COE video link https://www.youtube.com/watch?v=AlpOIWQrAlw&t=2685s). The general opinion was to install a bigger bridge plate. However, once I removed the existing bridge plate, I found that the underlying repair had not been fully done,…

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Ian Davlin
Private member DiscussionGeneral Business

Full Service vs. Selective

I’m curious to hear from everyone in the trenches, how they manage repairs they really don’t want to do. At this point I am offering customer work again to a small group of people who know me and have worked with me over the years. I’ve had a few people email that I don’t know, being a little pushy wanting to know price and turnaround time because “I need this by the xxth of the month”. I’ve simply offered them a referral to another sh…

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i prob turn about 70% of repairs down but i tell them sorry the building business is my priority & truthfully id rather leave les paul breaks , bridge reglue , pickup swap etc to people that do it mor…
Private member DiscussionAcoustic Repair

Rough In Saddle Height w/o reference height

Does anybody have any cool tricks to get a closer rough in saddle height when making a new saddle without the option of referencing the old one? Ex: replacing a lost saddle, making a saddle after a neck reset, making a saddle for a new bridge

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This was extremely helpful and great to hear all the different methods. Thank yall!
Private member DiscussionAcoustic Repair

Advice/tips needed on bridge repair

This is a new one for me and I’m willing to give it a shot with the customer’s understanding. What are some things that I need to look out for and what do I prioritize first… I’m up for it but I want to be efficient. Thanks for any tips/advice!

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What kind of guitar? Anything can be repaired but of course this goes to what the customer wants? Interestingly, I just cleaned up a mess like this. I didn't take pics of before but popsicle stick…
Private member DiscussionAcoustic Repair

1950s Gibson LG-3

Hi, I have a 1950's Gibson LG-3 that's had some poor work done to the spruce under the area of the bridge where the spruce has pulled away and or been sanded excessively. It's missing about .020-0.30 thou of spruce and I'm wondering/looking for advice about how to go about splicing in a thin piece of spruce before I re-glue the bridge. Please see pictures attached. My main questions are: glues for the patch, should the patch be mitered…

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When faced with a similar job recently, I chose to glue the patch in place with epoxy, then used hide glue to reset the bridge. The logic being that 20 years from now when someone needs to reset the…
Private member DiscussionFinish New Builds

Ken Parker finishing with the Bridge on

Just wondering, anyone doing Ken Parker finishing on an acoustic with the bridge glued on? I've been using the finish for a while but I'd like to start glueing the bridge on before I finish so I can acoustic test everything in its final state. I can't see a reason why I couldn't wipe the epoxy and oil up into the bridge joint and then remove it by rubbing but I was wondering if anyone has done it already. It would mean finishing the…

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Ian Davlin
Which finish are you talking about ? It sound's like it's hand applied.
Private member DiscussionElectric Builds

Nut slot and action trouble

Hi everyone - I recently ran into trouble making new nut for one of my necks that needed to be trued and re-fretted. I roughed in the nut as usual and then, with the bass guitar fully assembled and strung up, I started cutting the slots to depth. I use the StewMac digital nut slot depth gauge and have had good results in the past. I marked the nut's lowest points (radiused) using the guitar nut scribe tool (first time using this!) and c…

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Ian Davlin
That's actually not how that tool was intended to be used. That is essentially plotting a like to the top of the fret. With a bass, you would need much more than that. When James and I came up with th…
Private member DiscussionAcoustic Repair

Maple bridge plates: plain versus rift/quarter sawn versus laminated

I'm fixing a cedar top guitar with a big bulge and a bad bridge plate. Ideally I'd like a replacement plate with optimal stiffness in both directions and a thickness between 0.090 - 0.100". After I flatten the top as much as possible, should I: 1. use plain sawn maple 2. use quarter sawn maple (if so, any recommendations for sourcing?) 3. make up a cross grain maple laminate with two 0.050 thick pieces Thanks for any advice, searched the sit…

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I was thinking of clamping it between 2 boards perhaps with a slight radius to counteract the top?
Private member DiscussionAcoustic Repair

reality check - bridge repair - Epiphone PRO-1 Plus VS

I got this guitar for free hoping to further my skills and experience in guitar repair. I removed the bridge. its not in good shape and I don't think I can glue it back together with any hope of it holding tension again. I haven't been able to find a replacement that is of the same shape and dimensions. Epiphone/Gibson is no help. The top of this guitar is not at all flat. I don't know if I should try to flatten it before attempting to…

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Hi Mitch - The string spacing on that new bridge is probably too wide. I googled the Epiphone, and if the AI is right, it says the spacing is a narrow 2 3/64" (52mm). You may be able to buy one with…
Private member Discussion3D Printing

Free 3d printed stuff up for grabs

Santa heard I had a challenging year so he got me a 3d printer for Christmas. I’ve been printing like crazy, learning the machine. This has resulted in a bunch of tools that either don’t work for me, were attempts at mixing colors, or have very minor printing blemishes. Two lots up for grabs to anyone in the US who wants either. I’ll mail to you for free. First one to claim each gets it :) First lot has parametric nut and saddle sanders…

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Lot #1 still available. I'll likely be adding to the lot as I print and eff up but still make usable prints.
Private member DiscussionElectric Builds

Fender Double-tap humbucker problem

Hello all, A customer dropped a recent American Professional II Strat to have a Double-tap humbucker installed at the bridge. I rewired the guitar following Fender's schematic (see below) and installed a stacked 250 and 500k volume pot, treble bleed PCBs and push-push coil split/tap for this pickup. All went very well, until I tried it at switch position 2. Sure enough, the new unit does not play well with the others and combining delive…

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Understood. Plus the pole spacing is slightly different also. Just tossing out troubleshooting ideas.
Private member DiscussionAcoustic Repair

Newbie question on 12 string action

I recently picked up a Sterling Atlas 12 string that is in excellent shape except for some bellying, which once I get into setting action, may determine if I need to add a ‘bridge doctor’ to remediate some of it. However, I noticed that the saddle (adjustable but set to lowest point) has no curvature and there is not much down pressure on the center sets of strings which is causing some buzzing. My question is this (my first 12 string p…

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Thanks again to those that lended their wisdom. Bridge doctor just came in plus some bone saddle blanks so will get ready to tackle that project in near future.
Private member DiscussionAcoustic Repair

Cleaning under loose braces

I am looking for new ideas on tools or methods for cleaning under partially loose braces to insure a good glue joint. In the past I've tried flossing with sandpaper, using the metal cutting edge from a wax paper box, maybe some extra thin files. In this job, one of the loose braces is up against the bridge plate, so it's impossible to pass something all the way through. The loose parts are marked with the red ellipses.

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Ian Davlin
Private member DiscussionAcoustic Repair

Questions on Classical guitar action

I am working on a wall hanger that I thought would be fun to get working. It is an old Tokai. I have repaired a crack on left tuning arm. Also removed the bridge that had been badly glued on by previous owner. I am deciding if I want to put the effort into re-fretting it. I am new to Classical guitar actions, so my question is this - when you put a straight edge on the neck, where should it hit the bridge, if at all? I have learn…

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Here is a link to photos of work so far : https://share.icloud.com/photos/043WoRjVTKnK8Y3-Y3bOaHQYQ As you can see, the action is not bad, neck is straight, frets at top are .028 but flat, progress to…
Private member DiscussionDesign and Testing

Guitar frequency testing in the white.

In Michael Baskin's on-line video, he uses a frequency test of a guitar in the white to determine whether to thin the lower bout before finishing. The guitar in the video has a bridge attached. I'm wondering if this is the final bridge or something temporary. If the latter, how do the results compare to the final frequency analysis? I've used a bolt-on bridge to do the same, but don't have enough data points to draw a firm conclusion…

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I would probably blue tape/super glue the bridge in place vs bolts which would change the weight somewhat radically.
Private member DiscussionCAD/CAM

What would you like to see in a luthiery Fusion360 plugin?

As one does, I got distracted designing a fretboard for my newest acoustic build and thought 'Wouldn't it be great if there was a plugin to do this automatically?' Several days and 1000 lines of Python later, it's definitely possible. But then I thought "What else might be interesting as part of a plugin like this?" So I'd love to hear what you think, including: - Is this something you think is valuable (irrespective of price) - If it is va…

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Not sure what a script would do differently than Austin's parametric fretboard? There have been updated versions of the parametric fretboard which are available for free on Austin's discord, made by…
Private member DiscussionGeneral

Newbie luthier wannabe

Thought I would introduce myself, I am a retired computer nerd ex farm boy that loves to fix things… used to repair/rebuild pianos but now that I live in FL, space is at a premium in small home so I now am venturing into repairing guitars…. I have numerous practice candidates I have picked up on the cheap as not to destroy anything of value or collectability, and have tooled up with enough stuff to be dangerous. I have done several aco…

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Glad to have you on board, Tom! Welcome!
Private member DiscussionFinish Repair

Finish repair from mystery solvents

A customer brought this Gibson songwriter deluxe in, it’s approximately 20 years old to his recollection. It needs a few things done including fret work and a bridge re glue. At some point the guitar was lent out to a friend who dropped it then tried to fix the finish themselves. It looks like they used some kind of cleaner or something that didn’t get along with the lacquer at all. I’ll attach pictures but it’s kinda hard to get a pic…

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Ian Davlin
I agree with this. Just Novus probably wasn't going to be enough. It kind of looks like someone accidentally used alcohol instead of naptha. It's a very subtle boo boo. Use some 2000 grit sanding pape…