Search found 130 matches

by TallDad71
Tue Feb 09, 2021 1:11 am
Forum: Instrument Builders Forum
Topic: Identifying wood
Replies: 23
Views: 699

Re: Identifying wood

Measure them and calculate the densities, that will help an awful lot when researching on a wood database.

Definitely looks cedar ish
by TallDad71
Fri Dec 25, 2020 5:55 am
Forum: Instrument Builders Forum
Topic: Seasons Greetings
Replies: 8
Views: 1549

Re: Seasons Greetings

Happy Christmas to everyone on perhaps the most skilled forum in the world.
by TallDad71
Fri Nov 20, 2020 7:41 pm
Forum: Instrument Builders Forum
Topic: It’s not your fault but
Replies: 7
Views: 2142

Re: It’s not your fault but

Show off! 😀🤣😝

It’s another simple but great idea. I may just make another one that’s a little shorter and just does measurements in the range I need for string clearances.
by TallDad71
Thu Nov 19, 2020 8:53 am
Forum: Instrument Builders Forum
Topic: It’s not your fault but
Replies: 7
Views: 2142

Re: It’s not your fault but

$230 sounds a bit steep. Mine was £34, which, because of BrexiDIOTS, is probably close to $34 now


Glad to see there are cheaper alternatives Trevor.
by TallDad71
Wed Nov 18, 2020 9:59 pm
Forum: Instrument Builders Forum
Topic: It’s not your fault but
Replies: 7
Views: 2142

It’s not your fault but

Why has no one ever mentioned this tool before? Just bought a thicknessing wedge, about $60, link below, to replace my stew Mac feeler gauges. For decades I have been lifting feelers up in different combinations to ascertain string clearances over frets to complete setups but no more. Now I simply w...
by TallDad71
Mon Nov 16, 2020 5:11 am
Forum: Instrument Builders Forum
Topic: Visual Analyzer set-up
Replies: 21
Views: 11768

Re: Visual Analyzer set-up

FFT by studio six digital seems to produce curves that as detailed as those you have included in your books Trevor. Very simple to use store and compare graphs. It’s data is all sourced via a microphone which may be a limiting factor for your work. The peaks in response curves marry up very well to ...
by TallDad71
Fri Nov 06, 2020 11:46 pm
Forum: Instrument Builders Forum
Topic: Yairi Gakki repair - your advice please.
Replies: 10
Views: 2667

Re: Yairi Gakki repair - your advice please.

Yairi Gakki is Sadao Yairi. The other Yairi was Kazuo Yairi. Hiroshi Yairi was Sadai Yari's son and the guitars he made usually bore an S Yairi label. She sells sea shells on the sea shore. Or Yairi Gakki is Sadao Yairi. The other Yairi was Kazuo Yairi. Hiroshi Yairi was Sadai Yari's son Now repeat...
by TallDad71
Fri Nov 06, 2020 10:44 pm
Forum: Instrument Builders Forum
Topic: Bridge plate
Replies: 3
Views: 1579

Re: Bridge plate

I think you’ll be ok to carry on. The bridge plate is adding to the stiffness at the centre, the bridge pin holes are tracking their way through the plate, so that’s all good. The only small risk is that if it were to belly up then the curve of the belly could get close to under the bridge. Small ri...
by TallDad71
Mon Oct 12, 2020 1:00 am
Forum: Instrument Builders Forum
Topic: Moving Equipment
Replies: 5
Views: 1595

Re: Moving Equipment

IF you are moving 26,500km I'd suggest you go around the world the other way, it'll only be 13,500km, half the price! I'd also suggest using the drum sander as a bobbin sander with some big bits of softwood. Put them in place under the drum, hold them steady and then bring the drum down on them. Tur...
by TallDad71
Mon Sep 07, 2020 11:40 pm
Forum: Instrument Builders Forum
Topic: Brisbane humidity
Replies: 16
Views: 3578

Re: Brisbane humidity

13 m squared for a workshop is ample, same as my place. It leads you wanting more for sure but only for things like spray rooms wood sheds. The RH in UK is around 80% in the winter in my garden workshop. A cheap dehumidifier works well to get the RH down to around 55% which matches the house perfect...
by TallDad71
Mon Sep 07, 2020 3:40 am
Forum: Instrument Builders Forum
Topic: Saddle position
Replies: 31
Views: 5357

Re: Saddle position

One other idea for getting the saddle in the right place is to build an intonator like this one from Stewmac. A bit of Brass block and some M3 SCREW DOOR HANDLE Brass Chrome Connecting Sleeve Screws / Bolt Roses Knobs Cost nothing. Bit of work with a drill hacksaw and pliers soon had it done. https:...
by TallDad71
Mon Sep 07, 2020 12:18 am
Forum: Instrument Builders Forum
Topic: Soundboard Sonic Signature
Replies: 17
Views: 4225

Re: Soundboard Sonic Signature

I’m nearly two metres tall, so a dreadnought looks a bit like a ukulele in my hands! You gotta look good! Nobody, when talking about bridge weight, refers to the weight and stiffness of the bridge plate as well. The soundboard, sandwiched in between the plate and the bridge, act as a single brace w...
by TallDad71
Sat Sep 05, 2020 7:47 pm
Forum: Instrument Builders Forum
Topic: Soundboard Sonic Signature
Replies: 17
Views: 4225

Re: Soundboard Sonic Signature

The bridge weighed in at 35 grams, so quite heavy... Yes, that's over double what mine typically weigh. Is it much heavier than the bridges on the other guitars? Have you and O’Brien rescheduled your class dates yet from July 2020, early days I guess? No, not yet. Still too many unknowns, unfortuna...
by TallDad71
Fri Sep 04, 2020 6:14 pm
Forum: Instrument Builders Forum
Topic: Soundboard Sonic Signature
Replies: 17
Views: 4225

Re: Soundboard Sonic Signature

I've found the following to be a handy reference, and build to these resonances...it seems to work! I like my T1(2) to be higher, I don't really get excited, as a player, with those boomy dreadnought sounding steel string guitars. They seem to lack clarity between each note with low attack and lack...
by TallDad71
Fri Sep 04, 2020 6:11 pm
Forum: Instrument Builders Forum
Topic: Soundboard Sonic Signature
Replies: 17
Views: 4225

Re: Soundboard Sonic Signature

The figures from the walnut guitar seem to imply it has a heavy bridge (relatively low T(1,1)2, relatively high stiffness). A heavy bridge would explain the lack of excitement in the sound, as it will be less responsive to higher frequencies. How heavy was the bridge? Thanks for this Trevor. The br...
by TallDad71
Thu Sep 03, 2020 6:50 pm
Forum: Instrument Builders Forum
Topic: Soundboard Sonic Signature
Replies: 17
Views: 4225

Re: Soundboard Sonic Signature

in my limited experience, those monopoles seem rather low...Ross The weak guitar does have lower monopole frequencies. I don’t quite know why. The soundboard was thicknesses according to equations as opposed to look and feel and sound. However the bracing was optimised by sound and feel the same as...
by TallDad71
Thu Sep 03, 2020 6:30 pm
Forum: Instrument Builders Forum
Topic: Soundboard Sonic Signature
Replies: 17
Views: 4225

Re: Soundboard Sonic Signature

blackalex1952 wrote:
Thu Sep 03, 2020 6:07 pm
in my limited experience, those monopoles seem rather low...Ross
Do you mean the ones for the 05 Walnut weak sounding guitar or in general across all three please?
by TallDad71
Thu Sep 03, 2020 3:43 am
Forum: Instrument Builders Forum
Topic: Soundboard Sonic Signature
Replies: 17
Views: 4225

Re: Soundboard Sonic Signature

lamanoditrento wrote:
Wed Sep 02, 2020 11:37 pm
Do you know what the bridge rotation is for each?
They’re each around 2° The structural build, the stiffness of the x braces forwards of the bridge are all very similar. I wouldn’t have expected them to vary wildly anyways.
by TallDad71
Wed Sep 02, 2020 6:19 am
Forum: Instrument Builders Forum
Topic: Tone Bars
Replies: 0
Views: 1299

Tone Bars

There is very little discussion about the use and importance of tone bars in a Steel String X-Brace system. All I read is that they are important and useful, that people make them in all sorts of angles, sizes and shapes. Somogyi states that the X-Brace design primarily seeks to curtail Cross Dipole...
by TallDad71
Tue Sep 01, 2020 11:20 pm
Forum: Instrument Builders Forum
Topic: Soundboard Sonic Signature
Replies: 17
Views: 4225

Re: Soundboard Sonic Signature

Would you mind listing the T,1 T,2 frequencies please. It might be good on this forum to have a standard for X and Y axis when posting Visual Analyser type images...I usually copy the graph, then use 'paint' to insert text above the peaks so that there is an immediate frequency read for every peak ...
by TallDad71
Tue Sep 01, 2020 6:30 pm
Forum: Instrument Builders Forum
Topic: Soundboard Sonic Signature
Replies: 17
Views: 4225

Re: Soundboard Sonic Signature

I expect you are right Martin
My Chladni experiments got interrupted by a garden party next door who were unhappy with my choice of music in the workshop, symphony in 453Hz! 🤣

Hopefully get a crack on investigating further this week.
by TallDad71
Tue Sep 01, 2020 5:43 pm
Forum: Instrument Builders Forum
Topic: Soundboard Sonic Signature
Replies: 17
Views: 4225

Soundboard Sonic Signature

Like many on this forum I have built beautiful instruments that sound amazing. Like many in this group I have spent months on a guitar and wonder in sadness why it sounds like a shop bought guitar or worse. Attached is the sonic signature of 3 guitars all the same model but different woods, large bo...
by TallDad71
Thu Aug 27, 2020 11:42 pm
Forum: Instrument Builders Forum
Topic: StewMax Membership and Free Shipping
Replies: 11
Views: 5683

Re: StewMax Membership and Free Shipping

Excellent find, thanks very much for posting this Dave. Four happy shopping months left. Sad shopping months to follow thereafter.
by TallDad71
Thu Aug 27, 2020 11:00 pm
Forum: Instrument Builders Forum
Topic: Saddle position
Replies: 31
Views: 5357

Re: Saddle position

I'd be highly tempted to plug all 6 holes with hardwood. Shim off a good 3mm from the top of the entire bridge and laminate a new 3mm thick panel on it. Then rout out your saddle slot, then put in your peg holes. As they say 'cover up your mess ups.'
by TallDad71
Sun May 17, 2020 7:40 am
Forum: Instrument Builders Forum
Topic: Double V Neck Acoustic
Replies: 23
Views: 11260

Re: Double V Neck Acoustic

Great work, truly good stuff.

I can’t wait to hear a review of how it sounds. I’m a little puzzled by the joining of the two soundboards along that straight line and how they might vibrate as a single plate.