Search found 351 matches

by Dave M
Fri Mar 27, 2020 4:05 am
Forum: Instrument Builders Forum
Topic: Stay Safe Out There!!
Replies: 7
Views: 355

Re: Stay Safe Out There!!

Weird times. Attending a funeral yesterday and trying to stay 2 metres apart was a strange experience. You perhaps don't realise just how much physical contact you usually have with people.

Thank goodness for having the workshop to retreat to.

Cheers Dave
by Dave M
Sat Mar 14, 2020 4:35 am
Forum: Instrument Builders Forum
Topic: Double cutaway acoustic
Replies: 15
Views: 3487

Re: Double cutaway acoustic

That's come out pretty smart. Funnily enough it doesn't look as weird as one might expect!
It also seemed to go pretty quick.

Section 8...?
by Dave M
Wed Mar 11, 2020 3:37 am
Forum: Instrument Builders Forum
Topic: Somogyi bridge
Replies: 5
Views: 2024

Re: Somogyi bridge

Well yes I think we have to accept that Mr Somogyi doesn't operate in the same market as the rest of us but has entered the collectables realm. Price is no longer tied to functionality.

I do like the look of that bridge and it may also help in removing mass.
by Dave M
Sun Mar 08, 2020 11:05 am
Forum: Instrument Builders Forum
Topic: Somogyi bridge
Replies: 5
Views: 2024

Somogyi bridge

I was listening to Michael Chapdelaine playing a Somogyi guitar (which sounded great) and I noticed the little tails that he puts on the back of his bridges. I think they look great aesthetically. It may be a bit fanciful but I wondered if perhaps they had a function in terms of reducing the stress ...
by Dave M
Sat Feb 29, 2020 3:33 am
Forum: Contemporary Acoustic Guitar Design and Build - Trevor Gore
Topic: Electronic setup
Replies: 4
Views: 2522

Re: Electronic setup

Clearly you can blow up speakers and there have been some reports on here. However although you do need a fair bit of power to bring up the Chladnis, you don't have to be too extreme. I have always felt the big risk is of dropping the speaker box on to the guitar! I keep meaning to suspend it with a...
by Dave M
Wed Feb 26, 2020 4:30 am
Forum: Contemporary Acoustic Guitar Design and Build - Trevor Gore
Topic: Electronic setup
Replies: 4
Views: 2522

Re: Electronic setup

I simply use the signal generator in VA. Feed it through an old domestic amplifier, using the headphone output from the laptop. This drives a 4 inch car speaker which I have enclosed in a box. Works fine, the speaker was very cheap.

You will need ear protection!

Cheers Dave
by Dave M
Sun Feb 23, 2020 10:14 am
Forum: Instrument Builders Forum
Topic: Neck Carving
Replies: 6
Views: 2417

Re: Neck Carving

Mark thanks I am indeed doing what you suggest. It is that confidence thing about where the cutting line actually is as you mention. I also realised that one of the issues was that I am making a narrower neck - 45 mm rather than 47 at the nut, which doesn’t sound much but on the ground seems to make...
by Dave M
Tue Feb 18, 2020 10:19 am
Forum: Instrument Builders Forum
Topic: Carbon fibre splinters
Replies: 2
Views: 1272

Carbon fibre splinters

Right so which is most annoying: A discovering that there is bit of fibre sticking up, not glued down, by putting your hand in the box. B doing this by sticking the sharp point into your finger painfully. C having pulled out said sharp object, not noticing that the hole in your finger has left a tra...
by Dave M
Mon Feb 17, 2020 3:07 am
Forum: Instrument Builders Forum
Topic: Neck Carving
Replies: 6
Views: 2417

Re: Neck Carving

Rod and Martin thanks for that. Don't know what was wrong with me to cause such a brain fade - I have successfully done many other necks. Anyway I am now happily carving away.

Martin thanks for taking the trouble to load some photos. very Helpful

Cheers Dave
by Dave M
Sun Feb 16, 2020 11:12 am
Forum: Instrument Builders Forum
Topic: How do I fix this wavy side..
Replies: 9
Views: 4142

Re: How do I fix this wavy side..

So how did it go? How did you treat it? I think that we all get this at some point. I have done the reinforcement inside and lots of sanding externally. I have also just left them. It is a hand built instrument I would say! What is perhaps a bit surprising is that these small blemishes don’t really ...
by Dave M
Sun Feb 16, 2020 11:03 am
Forum: Instrument Builders Forum
Topic: Neck Carving
Replies: 6
Views: 2417

Neck Carving

I am having a bit of a drop in confidence. Shaping a neck for a SS and I just can’t quite see the shape that I am aiming for. The statue is still hidden in the marble as it were. So I have been reluctant to take the big cuts with the chisels that are actually needed. I have been nibbling! G squared ...
by Dave M
Sat Feb 08, 2020 3:40 am
Forum: Instrument Builders Forum
Topic: Semihollow fifteen inch
Replies: 21
Views: 7205

Re: Semihollow fifteen inch

Rod that heel is interesting. Any chance of another photo or two? Is that a common thing to do on an archtop is is purely your design?

Dave
by Dave M
Sat Feb 08, 2020 3:33 am
Forum: Jigs & Fixtures
Topic: Extracting the bolt bar
Replies: 1
Views: 2697

Extracting the bolt bar

I seem to have to remove the brass bolt bar from the heel quite a lot. And I like to leave it until fitting the heel cap to trim it to final length.

So a small hole drilled in the end which a woodscrew just grips helps a lot. I know, you probably all do but...
by Dave M
Thu Feb 06, 2020 4:06 am
Forum: Jigs & Fixtures
Topic: DIY plane blade query
Replies: 4
Views: 1548

Re: DIY plane blade query

The Chinese are making some better quality planes under various brand names, though I haven't got on very well with them. However I think their blades were quite good steel so you may be able to buy one reasonably cheaply. I have fitted all my old planes with thicker, better steel bades but it was a...
by Dave M
Mon Feb 03, 2020 4:12 am
Forum: Contemporary Acoustic Guitar Design and Build - Trevor Gore
Topic: cosed box Frequency response falcate OOO
Replies: 10
Views: 3154

Re: cosed box Frequency response falcate OOO

Well done Jurgen for getting there with analysis along the way. We have been following with interest. This is not easy stuff. I have a falcate braced box on the bench at the moment and have high hopes of it given that the others I have built have worked so well. I have not been nearly as conscientio...
by Dave M
Fri Jan 31, 2020 3:36 am
Forum: Instrument Builders Forum
Topic: Classical Build (s) - Hopefully falcate!
Replies: 19
Views: 5471

Re: Classical Build (s) - Hopefully falcate!

BHS ...?. Fascinating thread Thanks
by Dave M
Fri Jan 31, 2020 3:35 am
Forum: Instrument Builders Forum
Topic: Qualities of Spruce
Replies: 17
Views: 3504

Re: Qualities of Spruce

Well kpcart I thought I had come across most of the Spruces but you've given me another on in omorica!

Thanks for sharing your experience with the various timbers. Dave M
by Dave M
Tue Jan 28, 2020 10:04 am
Forum: Anything Goes
Topic: Intonation and things
Replies: 1
Views: 1336

Intonation and things

We have all talked a lot about intonation and we all know how we are already fighting against the fact that the equally tempered scale is a bit of a problem for fretted instruments. So I was looking at a (wonderful) cello player the other day on the worldwide computer, and a couple of things struck ...
by Dave M
Tue Jan 28, 2020 6:55 am
Forum: Instrument Builders Forum
Topic: Qualities of Spruce
Replies: 17
Views: 3504

Re: Qualities of Spruce

You do not talk about Engelmann. Do you have any data on that variation of the spruce family?
by Dave M
Tue Jan 28, 2020 2:45 am
Forum: Instrument Builders Forum
Topic: Qualities of Spruce
Replies: 17
Views: 3504

Re: Qualities of Spruce

Dave that is a fascinating and important data set. It shows the variability very clearly. Those samples of Sitka are very offputing! This should be more widely publicised. As you say it would seem that Lutz is a clear winner for instruments. Since you are in the trade you presumably have a sound met...
by Dave M
Sun Jan 26, 2020 4:02 am
Forum: Instrument Builders Forum
Topic: Stop Loss bags
Replies: 5
Views: 2338

Re: Stop Loss bags

These look good. Just done a quick search and they seem have limited availability in the UK. Only one supplier who is charging about £50 for 4. I wonder if anyone else has bought in the UK?

Did you pay a lot Mathew?

Dave M
by Dave M
Sun Jan 26, 2020 3:58 am
Forum: Instrument Builders Forum
Topic: Qualities of Spruce
Replies: 17
Views: 3504

Re: Qualities of Spruce

From all my reading the message I hear from the people who actually know about this stuff is that the particular species, be it spruce or otherwise is not really important. What makes a good top is the highest stiffness (Youngs modulus) and the lowest density. Good values of these will enable one to...
by Dave M
Sat Jan 25, 2020 3:38 am
Forum: The Gallery
Topic: A few latest builds
Replies: 6
Views: 2004

Re: A few latest builds

Lovely builds Peter. That classical is gorgeous. Is it a well known outline or your own shape? The proportions really work for me.

Cheers Dave M
by Dave M
Sun Jan 19, 2020 11:49 pm
Forum: Instrument Builders Forum
Topic: Violins
Replies: 8
Views: 2383

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: 1623

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...