Search found 328 matches

by Dave M
Sun Jan 19, 2020 11:49 pm
Forum: Instrument Builders Forum
Topic: Violins
Replies: 4
Views: 167

Re: Violins

Ross it is my understanding that a huge amount of work has been done analysing violins and their modes of operation - far more than on guitars because there is so much more money sloshing around the violin world. A further search should throw something up. Dare one even suggest there could be books ...
by Dave M
Sat Jan 11, 2020 4:53 am
Forum: The Gallery
Topic: Torres Style
Replies: 3
Views: 218

Torres Style

I was so pleased last year with a Maple/Engelmann braced like The Torres SE 114 that I thought I would do another to see if it was just a fluke. Well it wasn't. This one came out really well also, in American Walnut and Engelmann. They have a very similar sound with some just discernable differences...
by Dave M
Tue Jan 07, 2020 7:10 am
Forum: Contemporary Acoustic Guitar Design and Build - Trevor Gore
Topic: My Second Build
Replies: 15
Views: 1987

Re: My Second Build

David that looks great. Hopefully the bright red padauk fretboard will calm down over time! I have said it before but it bears repeating that Trevor's design for that steel string works so well that even we beginners can end up with a good sounding guitar given sufficient care. Good Stuff. The next ...
by Dave M
Tue Jan 07, 2020 7:03 am
Forum: Anything Goes
Topic: Spreadsheet and other Errors
Replies: 0
Views: 393

Spreadsheet and other Errors

There has been some discussion of the problems with spreadsheet calculations on the forum - so called conditioning errors where the way that you frame a particular equation can lead to errors. Well I have discovered this book: Humble Pi by Matt Parker which describes spreadsheet problems and other p...
by Dave M
Tue Nov 19, 2019 3:58 am
Forum: Instrument Builders Forum
Topic: packaging tape for binding
Replies: 12
Views: 1256

Re: packaging tape for binding

I use the pretty standard tape from 3 M. I am in the UK but I'm sure it will be available in Oz. Having recently bound the guitar in the pic it is probably the best I have done so far because the bindings were bent accurately. This I think is key. Unlike Martin I have had issues with some Engelmann ...
by Dave M
Sat Nov 16, 2019 2:45 am
Forum: Instrument Builders Forum
Topic: Bending Sides issue
Replies: 17
Views: 1911

Re: Bending Sides issue

There is a useful current thread on bending on the OLF. -Bending Different species-
by Dave M
Sat Nov 16, 2019 2:34 am
Forum: Instrument Builders Forum
Topic: Bending Sides issue
Replies: 17
Views: 1911

Re: Bending Sides issue

This has probably happened to all of us at some time. Unless you are particularly good with the bending iron the most consistent method is with some kind of variation on the Fox bender, using those metal slats to fully support the outside of the bend. As has been said elsewhere you can do some sandi...
by Dave M
Thu Nov 14, 2019 3:48 am
Forum: Jigs & Fixtures
Topic: Bending Binding
Replies: 0
Views: 491

Bending Binding

This is probably not original but I thought I would throw it up. I added a curved piece of Al to my bending iron help produce the vertical bend in the bindings, particularly on the back at the waist which I have struggled with in the past.
by Dave M
Tue Oct 29, 2019 8:59 am
Forum: Contemporary Acoustic Guitar Design and Build - Trevor Gore
Topic: My Second Build
Replies: 15
Views: 1987

Re: My Second Build

David that top bracing is incredibly clean. I know just how hard it is not spray epoxy all over the place. Also that Laurel looks rather fine. Doing cutaways seriously adds to the difficulties but I have decided that the advantage to the player means I should pretty much always do one. Having built ...
by Dave M
Tue Oct 29, 2019 8:48 am
Forum: Contemporary Acoustic Guitar Design and Build - Trevor Gore
Topic: Spectrum Analyser
Replies: 2
Views: 1105

Spectrum Analyser

Over on the OLF forum Alain Lambert is offering some spectrum analysis software he has written with guitar makers in mind. I haven't quite sussed it out yet but it could be useful. Worth a go I think although we perhaps need some more detail of the technicalities underlying his program. All kudos fo...
by Dave M
Tue Oct 29, 2019 8:39 am
Forum: Instrument Builders Forum
Topic: Dehumidified environments
Replies: 2
Views: 1097

Re: Dehumidified environments

Ross that is interesting. A Little counter intuitive as one would think a drier atmosphere would be healthier. Here in the UK with a pretty consistent high humidity I aim for around 50 % RH or just below so I guess I am in the range seen as sensible. I have thought about other possible effects of a ...
by Dave M
Mon Oct 21, 2019 1:40 am
Forum: Instrument Builders Forum
Topic: First Classical Build
Replies: 18
Views: 3774

Re: First Classical Build

Alan that is indeed looking good. If you have (finally) received the Jeff Elliot plans for FE 114 you may be as surprised as I was at how small the fan bracing is. You have the wider bracing I notice that Torres seemed to use earlier. I was quite worried that the thing would give up on me when I got...
by Dave M
Thu Sep 19, 2019 5:31 am
Forum: Jigs & Fixtures
Topic: Glueing the scarf joint
Replies: 5
Views: 2333

Glueing the scarf joint

I have been using more or less the arrangement that Trevor recommends for gluing the headstock to neck scarf joint in my previous builds. I was doing a couple just now and could feel one of them slipping and had to reseat it, the second also moved and I was unhappy enough to take it apart and clean ...
by Dave M
Mon Sep 16, 2019 3:12 am
Forum: Instrument Builders Forum
Topic: Bending Mulga Bindings
Replies: 5
Views: 1441

Re: Bending Mulga Bindings

Have to say that when I've had grain runout like that I never could get it to bend using the hot iron.. This rosewood I was working with and I only got it to go in a bending machine where it was fully supported.
by Dave M
Mon Sep 16, 2019 3:09 am
Forum: Instrument Builders Forum
Topic: Selmac Grand Bouche
Replies: 7
Views: 1659

Re: Selmac Grand Bouche

Thanks Ross, interesting.

Do I take it that you make these? That bracing certainly looks weird when we are all used to the x or fan bracing

And Jeff at least getting into the box would be fairly easy!
by Dave M
Sun Sep 15, 2019 2:02 am
Forum: Instrument Builders Forum
Topic: Selmac Grand Bouche
Replies: 7
Views: 1659

Selmac Grand Bouche

I was listening to this chap the other day: Joscho Stephan, who is very good - these guys must have the highest work rate than any guitarists other than Flamenco players - but I was struck by that huge soundhole. Presumably there must be a huge amount of support in the upper bout and around the hole...
by Dave M
Wed Aug 21, 2019 3:09 am
Forum: Instrument Builders Forum
Topic: First Classical Build
Replies: 18
Views: 3774

Re: First Classical Build

Alan there is a pic of a gabled brace in section 7 of G&G first edition - probably the same in the second. Fig 7-8.

I liked their jigs for routing the curved base and the gables. Makes the process much quicker.
by Dave M
Tue Aug 20, 2019 2:19 am
Forum: Instrument Builders Forum
Topic: First Classical Build
Replies: 18
Views: 3774

Re: First Classical Build

I have been building roughly to the GAL SE 114 plan and going to have a look I see they taper the back bars: Head end 6.6 to 5.2 next 8.2 to 5.6 next 9.9 to 5.2 All at 18 high. I couldn't persuade myself that these shapes were important so went for 10 by 20 high, rounded over at the top, and scallop...
by Dave M
Tue Aug 13, 2019 2:43 am
Forum: Instrument Builders Forum
Topic: Veneer Softener
Replies: 5
Views: 1838

Re: Veneer Softener

What was your regime Allen?
by Dave M
Mon Aug 12, 2019 2:19 am
Forum: Contemporary Acoustic Guitar Design and Build - Trevor Gore
Topic: Wallnut Density for SS Falcate Bridge
Replies: 4
Views: 1045

Re: Wallnut Density for SS Falcate Bridge

Good stuff Mitch. I haven't been able to get my rosewoods below about 23 - 24 gm. I have stuck with it so far to keep the aesthetic right with the fretboard.
by Dave M
Mon Aug 12, 2019 2:13 am
Forum: Contemporary Acoustic Guitar Design and Build - Trevor Gore
Topic: Carbon Fibre or not
Replies: 2
Views: 971

Re: Carbon Fibre or not

Without commenting on the structural issues since I'm not qualified to, it did strike me when reading about repair issues on another forum that the layer of carbon fibre and resin should substantially reduce problems with string ball end damage to the bridge plate.
by Dave M
Sun Aug 11, 2019 2:03 am
Forum: Instrument Builders Forum
Topic: Luthier on Luthier - Michael Bashkin talks to Trevor Gore
Replies: 3
Views: 2162

Re: Luthier on Luthier - Michael Bashkin talks to Trevor Gore

That was very interesting. A somewhat devious route to high class guitar building!

Some of Michael Bashkins other podcasts are also worth seeking out.
by Dave M
Wed Jul 31, 2019 2:47 am
Forum: Instrument Builders Forum
Topic: Back joint prep
Replies: 15
Views: 2757

Re: Back joint prep

I would just add that you are not alone! Edge jointing of boards is a skill that many people struggle with. Most of us have gone through that litany of sanding, routing etc at the start. However the reasonably long plane (I use a number 5) and a shooting board is by far the best setup to use. Trevor...
by Dave M
Tue Jul 30, 2019 2:02 am
Forum: Instrument Builders Forum
Topic: Size of Steel String guitars
Replies: 2
Views: 1464

Re: Size of Steel String guitars

Thanks for the comprehensive reply Trevor. Jim's 320 really is narrow but as you say sounds fine. I've been building my classicals like this which has the overall dimensions of Torres SE114 but using your high waist which I like. With the lower bout at around 350 the outline doesn't differ very much...