The Hub

The latest builds, repairs, and conversations from across Looth. Activity
Filters AND Search Tools× Type Discussions× Type Documents× Reset all
Private member DiscussionDesign and Testing

FFT tools for modal frequency work

I did a pretty big update to my web tools last week. These are updated from the older versions I had up on celestialinstruments.com. There’s an updated FFT tool now, plus mode detection for guitars and plates, wolf note detection, played-note energy transfer, monopole mobility, plate thickness calculation, and 1/2/3/4 DOF modeling that can be prefilled from FFT data. The part I’m most excited about is being able to fit a measured guitar re…

3 replies
3 replies
LikeShare
Private member
Dang! That's a lot of very cool stuff! Awesome!
Private member DiscussionCAD/CAM

Fast & Curious 3: Parametric Drift

https://www.instagram.com/reel/DWAuW40jAR_/?igsh=MW1jNDdoYzllMGFmMA== I’ve spent a few overly caffeinated days bouncing between modelling environments, different combinations of operations, tools.. subtle differences in how the coffee is brewed. In short… • Building Iso Curves in Sketch. Defining the surface structure and flow • NURBS Surfacing from curves, smooth intentional surface topology. • BRep Face to T-Spline in Form Environment. Org…

6 replies
6 replies
LikeShare
Private member
Brett -- If you are doing free-form modelling, have you tried using Shapr3D software? I just started playing around with it and it seems to be reasonably intuitive and easy with which to get started.…
Private member DiscussionCAD/CAM

2 Surface 2 Transition

Back at tinkering with the new Isoparametric Curve tool in Fusion. Scroll down to PICTURES LETS GO! If you want to skip this little walk through Autodesk Fusion memory lane, clearing up some of the UI conFusion. Why something so seemingly basic, is just being added today. 2009- Autodesk Inventor, hybrid modelling experiment, parametric and direct CAD in one hybrid system. 2011- Autodesk acquires T Splines Inc. an organic modeller still in…

LikeShare
Private member DiscussionAmps, Pickups, and Pedals

Help needed identifying real PAF

Hello estimable friends, A very long-term friend of mine left us on Christmas Eve after a long illness. His sister tasked me with evaluating, restoring, and selling his stuff. Today I'm preparing to restore a 2008 Longhorn GOM to its original EMGs. Pulling out the humbuckers I see a Pearly Gates and… what looks like an original short-magnet PAF. Correct shape brass screws for the bobbins, UV light confirms sticker and tape, tooling mark…

8 replies
8 replies
LikeShare
Private member
Lindy Fralin quickly pointed to me that the pickup looks authentic all right, but the magnet is non-original. Having a second look at it myself, I realized very fast that it has been changed as it is…
Private member DiscussionSELL! SELL! SELL!

Moving Sale!!

Hi Loothgroup. Cascadia Lutherie Supply is moving to a smaller shop and we need to reduce inventory - fast! We are offering a 40% discount to all Loothgroup members on all items posted on our website www.cascadiacanada.com Use the code LOOTH40OFF at checkout to receive your discount. The sale runs until Sunday Feb 8th Grab what ever Tonewood, parts, and tools you need - so we don't have to move them. Cheers Darcy

2 replies
2 replies
LikeShare
Private member
Just tagging @member to alert the east coast.
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…

10 replies
10 replies
LikeShare
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 DiscussionGeneral

Humidity stability, moisture meters

It's that time of the year when I start to get all paranoid on the humidity levels of my shop. It happens at this time as the heating seems to send my hygrometers out of whack and it's quite difficult to keep things stable. So far i've been relying on keeping a 45% constant humidity in an automated system I built on Domoticz (similar to Home Assistant), which control a humidifier and dehumidifier. I'm not that confident i got this nailed…

3 replies
3 replies
LikeShare
Private member
Thanks both for your replies. In all honesty so far I have not had any issues with my builds. The Trevor Gore books do mention that gluing should always be done at 45%RH, so i'll keep trying to stick t…
Private member DiscussionFinish Repair

Osmo oil finish

Hello. I am interested in the luthiers opinions about using Osmo oil as a finish on acoustic guitars? Advantages vs disadvantages. I am a new builder with small home workshop, mostly using hand tools to build my first acoustic guitar, an OM pre war style. Thank you all.

1 reply
1 reply
LikeShare
Private member
Hi Matthew- I have been using Osmo on Guitars and other woodworking for about 15 years. I love the stuff, and it is still a bit confusing at times to understand their products. They have oils with less…
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…

5 replies
5 replies
LikeShare
Private member
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 Discussion3D Printing

Comfortable sanding block

One of the first things I made with my 3D printer was this small sanding block with a ball handle that fits my palm. I was inspired by the little L-N squirrel tail block plane that my father gave me. I have neuropathy in my fingers, on top of arthritis, and it's uncomfortable for me to hold the little blocks of wood that I used before. I was surprised how well this works, and these two tools are always within arm's reach.

LikeShare
Ian Davlin DiscussionSELL! SELL! SELL!

Stewmac Tools For Sale

I am not selling these, Gregg Johnson has asked for them to be posted. $325 shipped - Email [email withheld]

LikeShare
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.

6 replies
6 replies
LikeShare
Ian Davlin
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…

3 replies
3 replies
LikeShare
Private member
Glad to have you on board, Tom! Welcome!
Private member DiscussionGeneral

Widening fretslots

Hello everyone, I use a Stewmac japanese fretsaw (which produces .023" wide fretslots, matching the width of the tang of stewmac wire) to recut my slots on refrets. The saw does a good job making the slots deeper, but struggles to make them wider and binds like crazy throughout the process. I think that is due to it not having enough (or any) set, so in theory it only cut downwards and does a poor job removing material from the slot wall…

11 replies
11 replies
LikeShare
Private member
My fretboards are done with a table saw & correct SM blade, if i need to touch them up after radius i go between the jap saw & regular one sm sells. yellow wax to stop them from sticking when cutting…
Private member DiscussionShop Organisation

Traditional woodworker's bench

I've been building up my "2 car garage shop" for about 10 years preparing for retirement from health care. This spring I finally quit punching the time clock. Over the same time I've build 13 mandolins and 4 guitars. Now I pretty much have all my tools in place and enough wood stored to build for quite some time. My work benches are built with a heavy door for a top and base cabinets I scavenged from work. Lately I have toyed with the i…

9 replies
9 replies
LikeShare
Private member
That's impressive! I found a Sjoberg's Elite in very good condition on FBMP and offered the seller a ridiculous price. They bit, so that's what I ended up with. I hurt for 2 days after tearing apart t…
Private member DiscussionAcoustic Repair

Mossman Guitar trussrod tool

I know some of you pros that have been doing repairs for years must have a tool.....Anyone have any suggestions for a trussrod tool to adjust a mossman? or photos of something i can make on the fly? I have tried shaving down a socket but no luck the brace inside leaves little to no clearance.

4 replies
4 replies
LikeShare
Private member
Ya! That'll work.....I might weld the rod in. That's the beauty of the 12 point. Don't have to turn much to re-engage.
Private member DiscussionShop Organisation

MagFitt Vacuum System from Woodcraft

Like many of us, I work in a small space - a quarter basement with maybe 6 -1/2 feet of headroom. Sawdust is a problem. There’s no room for an extensive ductwork system or a blower setup. My shop tools (bandsaw, drill press, vertical belt sander, etc.) have a 1-1/2 inch connection for vacuum, but I have mostly been too lazy to use them. (note that I finally added a portable shop air cleaner with HEPA filters). When the most recent Wo…

1 reply
1 reply
LikeShare
Tom Krebs
Thanks for this info, I have been using the Rockler expanding blue hoses and their Manifold shown here with great results.
Private member DiscussionSELL! SELL! SELL!

Luthier Books/Periodicals

Hey All- I have: -GAL issues #142, 143 & 144 -Big Red Book #2 without dust cover -The Luthiers Tool Box book from the FBJ. All in excellent condition. Best offer plus shipping and they are yours. -Mike

LikeShare