Search found 224 matches

by Dave M
Sat Apr 21, 2018 6:28 am
Forum: Anything Goes
Topic: Book This is your brain on music
Replies: 0
Views: 37

Book This is your brain on music

I have just been re reading this book by Daniel Levitin. While it is not immediately relevant to instrument making, for those who are interested in how we make, listen and respond to music it is fascinating. It does provide some deep background for our discussions of intonation and temperament. Alth...
by Dave M
Sat Apr 14, 2018 11:04 pm
Forum: Instrument Builders Forum
Topic: Donations drive to help cover forum running costs
Replies: 14
Views: 377

Re: Donations drive to help cover forum running costs

No Martin thanks to you for keeping this going. Dave
by Dave M
Tue Apr 10, 2018 9:05 am
Forum: Instrument Builders Forum
Topic: Cutting 1mm slots / rings for rosettes
Replies: 15
Views: 669

Re: Cutting 1mm slots / rings for rosettes

Trevor you mention third party high quality collets for the dewalt routers you use. A quick search doesn’t give an obvious supplier. Without getting too commercial where should we be looking - the cnc tooling people perhaps...? I was surprised to see the specs of such devices, the best are seriously...
by Dave M
Tue Mar 27, 2018 7:13 am
Forum: Instrument Builders Forum
Topic: Soundboard gluing failure
Replies: 19
Views: 814

Re: Soundboard gluing failure

I am absolutely with Steve on this. The surfaces with titebond on them will not reglue properly. You are at an early stage with this soundboard. Cut down the line with the finest kerf saw/bandsaw you can find and just maybe the rosette can be fudged a little to look OK. It is my experience as an ama...
by Dave M
Sat Mar 24, 2018 3:34 am
Forum: Contemporary Acoustic Guitar Design and Build - Trevor Gore
Topic: Plastic Hinges a warning
Replies: 2
Views: 365

Re: Plastic Hinges a warning

Yes it's been a seriously dull period this winter but at least the snow has now gone. Yes, 100-150 mm of snow in mid March! Still makes the warmish, dry workshop all the more attractive. Finished the reworking of my binding jig today and, along with the much higher quality DeWalt router I am expecti...
by Dave M
Fri Mar 23, 2018 5:05 am
Forum: Contemporary Acoustic Guitar Design and Build - Trevor Gore
Topic: Plastic Hinges a warning
Replies: 2
Views: 365

Plastic Hinges a warning

When I built my binding ledge cutting jig I couldn't source the big plastic hinges that Trevor used (in the UK) but ended up with smaller ones. I have been reworking the jig to fit a different router and discovered that one of these hinges is very nearly broken through at the hinge point. This could...
by Dave M
Mon Mar 19, 2018 4:10 am
Forum: Instrument Builders Forum
Topic: Stunning wood
Replies: 14
Views: 842

Re: Stunning wood

Yes I always like using it. This one was strung up a few days ago and I am dead chuffed with it.
by Dave M
Fri Mar 09, 2018 7:56 am
Forum: Instrument Builders Forum
Topic: Double Bass Build
Replies: 6
Views: 577

Re: Double Bass Build

Allen quite. I didn't want to frighten Michael too much by admitting just how many routers I have stashed around the workshop! Including the ones that go in the makeshift router table. Also jigging is such a huge area there are books on it. However for someone starting out it is worth knowing that w...
by Dave M
Fri Mar 09, 2018 4:31 am
Forum: Instrument Builders Forum
Topic: Double Bass Build
Replies: 6
Views: 577

Re: Double Bass Build

As an amateur guitar builder I sympathise - I have made rather more necks than I have guitars! It is also a truth that there is rarely one 'best' way to do things. Depending on tooling and skill levels, what suits one person doesn't work for another. Routers. These are incredibly useful tools for wo...
by Dave M
Wed Feb 21, 2018 7:19 am
Forum: Tutorials
Topic: Enlarging the kerf in Linings
Replies: 4
Views: 639

Enlarging the kerf in Linings

This is probably a bit trivial but I'll throw it up anyway... I have previously used various hand methods for increasing the width of the kerfs in linings to go round the tighter bends - wider handsaws and so on. This week I had to make some new linings so had my jig set up on the bandsaw. This made...
by Dave M
Sun Feb 18, 2018 5:06 am
Forum: Instrument Builders Forum
Topic: Laminating Cutaway Sides
Replies: 6
Views: 638

Re: Laminating Cutaway Sides

Bender 3 small.jpg Bender 2 small.jpg Thanks for all the responses. Alex you certainly went for it! As it happens I got nearly to success the next day. I am using this contraption: This is nothing new, I think Mike Doolin was one of the first to discus it. As usual I changed several things: Increas...
by Dave M
Fri Feb 16, 2018 7:37 am
Forum: Instrument Builders Forum
Topic: Laminating Cutaway Sides
Replies: 6
Views: 638

Laminating Cutaway Sides

I am still struggling to bend my figured maple into the sort of sharp cutaway shape that Trevor uses. Having done the usual search of that sometimes useful store of knowledge I came across John Bogdanavich again. (I had forgotten that he uses three veneers) He is however using a pretty simple classi...
by Dave M
Tue Feb 06, 2018 9:04 am
Forum: Jigs & Fixtures
Topic: Lathe Drum sander
Replies: 6
Views: 5471

Re: Lathe Drum sander

I put up a pic of my lathe based drum sander some time ago but during my current build I realised it is a really good tool for creating the scooped side of the head block for a cutaway sided model. You can do it at the front of the lathe as the block is fully supported by the table and with careful ...
by Dave M
Sat Jan 27, 2018 5:19 am
Forum: Contemporary Acoustic Guitar Design and Build - Trevor Gore
Topic: The Right Microphone?
Replies: 9
Views: 663

Re: The Right Microphone?

I am using an Icicle pre amp with the Shure mic which provides the USB link to the PC. It works fine, was fairly cheap and I have had no trouble with the (Dell desktop) PC recognizing it. You do have to play with levels a bit and learn how to drive your spectrum analysis software properly. I use VA ...
by Dave M
Fri Jan 26, 2018 8:37 am
Forum: Instrument Builders Forum
Topic: Mask the bridge glueing area
Replies: 11
Views: 820

Re: Mask the bridge glueing area

Allen yes thanks I am leaning towards masking just inside the bridge outline then scribing round it and removing the last mm or so as per John Parchem's suggestion. Allan thanks for taking the trouble to share your experience. Those are things I am trying to implement - particularly the speed and ov...
by Dave M
Thu Jan 25, 2018 7:02 am
Forum: Instrument Builders Forum
Topic: Mask the bridge glueing area
Replies: 11
Views: 820

Re: Mask the bridge glueing area

Thanks everyone, there are some great ideas there. I realise it is a question without a straightforward answer, but I am trying to tease out the pros and cons. As a really quite poor sprayer (of nitro) I have to do a lot of sanding and I can see that having that obstruction in the middle of the soun...
by Dave M
Wed Jan 24, 2018 12:08 pm
Forum: Instrument Builders Forum
Topic: Mask the bridge glueing area
Replies: 11
Views: 820

Mask the bridge glueing area

I am finish sanding a build - slightly finicky but satisfying because it means you are nearly there. And I keep seeing pictures on this forum and others of the bridge glueing area masked off. Now I know that G and G don't do this but I also know that the process of removing the finish is fraught wit...
by Dave M
Mon Dec 18, 2017 4:48 am
Forum: Instrument Builders Forum
Topic: Visual Analyzer set-up
Replies: 19
Views: 1689

Re: Visual Analyzer set-up

I think the other way to fix problem 1) is to change the permissions on the file that VA writes back to: By setting the security on the folder in which VA sits, in the case of Win 8 C:programfiles/VA2011, in Win7 C:programfiles(x86)/VA2011 such that users had write access as well as system and admin...
by Dave M
Wed Dec 06, 2017 8:52 am
Forum: Instrument Builders Forum
Topic: strobotuners
Replies: 9
Views: 997

Re: strobotuners

+1 for AP. I love the large display. And being free is quite nice.

It has a quirk that when first loaded it has a rather poor display. It is only when you expand the window that you get the proper meter display. At least this is what I have found with the version I run on a win 7 or 8 machine.
by Dave M
Wed Dec 06, 2017 8:48 am
Forum: Instrument Builders Forum
Topic: Luthier tips du jour - Inlay tool tip
Replies: 6
Views: 732

Re: Luthier tips du jour - Inlay tool tip

I notice that the actual tool he's using is pretty cheap. However I have no feel for what the compressor required would cost and the tooling.

Are air tools worth thinking about in more general terms...?
by Dave M
Wed Dec 06, 2017 8:43 am
Forum: Instrument Builders Forum
Topic: Cedrela faults
Replies: 4
Views: 681

Re: Cedrela faults

Thanks Martin As I said in the post I don't think it is a crack ( the ring shake that you mentioned) It just looks like a discoloration. I do try to avoid it when building necks if only because it looks like a fault in the final product. Perhaps you guys don't use Cedrela too much given your choice ...
by Dave M
Mon Dec 04, 2017 4:48 am
Forum: Instrument Builders Forum
Topic: Cedrela faults
Replies: 4
Views: 681

Cedrela faults

I quite often find this sort of discoloration in neck blanks in Cedrela. Close examination shows they are not cracks even though they look like it. It is some sort of discontinuity and a darker colour. Do people think this is a problem with the timber? Is it a weakness or just cosmetic?
by Dave M
Mon Nov 27, 2017 4:38 am
Forum: Instrument Builders Forum
Topic: Superglues in luthierie
Replies: 12
Views: 1163

Re: Superglues in luthierie

Thanks guys I shall give it a go.
by Dave M
Sun Nov 26, 2017 5:46 am
Forum: Instrument Builders Forum
Topic: Superglues in luthierie
Replies: 12
Views: 1163

Re: Superglues in luthierie

56 I am interested in how you are using CA glue. Do you cover the two surfaces with masking tape then use the CA to glue these together?

I ask because some double sided tape does indeed leave a lot of residue for clean up so if there is a better way...
by Dave M
Thu Nov 16, 2017 9:15 am
Forum: Instrument Builders Forum
Topic: Glueing struts RH
Replies: 1
Views: 448

Glueing struts RH

I was glueing the ladder bracing to a back today when this little niggle that has been around in the brain came back. I have kept the RH down for a few days as per what every serious maker says. However. If you are using a water based glue such as Titebond, as soon as that liquid hits the great wide...