Search found 44 matches

by davidafterwork
Sat Mar 13, 2021 6:47 pm
Forum: Contemporary Acoustic Guitar Design and Build - Trevor Gore
Topic: Mono mobility (Martin and my TG style) results
Replies: 16
Views: 3397

Re: Mono mobility (Martin and my TG style) results

Thanks for that but how then do you get just the 104 main air to drop when the other 2 numbers are right now???
Also I only tried the blu tac to see what would happen As I wasn’t getting anywhere with shaving the braces.
I was amazed at the drop in the other 2 numbers with just 30g of blu tac!!
Dave
by davidafterwork
Sat Mar 13, 2021 3:28 am
Forum: Contemporary Acoustic Guitar Design and Build - Trevor Gore
Topic: Mono mobility (Martin and my TG style) results
Replies: 16
Views: 3397

Re: Mono mobility (Martin and my TG style update) results

Hello all I had my TG style at 104 188 236 I tried shaving the back brace to bring the numbers down but didn’t seem to be having much effect... Just for fun I put 30g of blu in 2 pieces ON the top and below the bridge as TG did on the video and look at the numbers now... 103 179 224 Guitar even soun...
by davidafterwork
Tue Mar 02, 2021 3:11 am
Forum: Contemporary Acoustic Guitar Design and Build - Trevor Gore
Topic: Mono mobility (Martin and my TG style) results
Replies: 16
Views: 3397

Re: Mono mobility (Martin and my TG style) results

Thanks again Can I confirm a few things before I take to the tools again... 1 All test were done with guitar finished ( lacquered/bridge/ strings on as in TG Video) 2 To bring 97 down to 95 you say weights but I haven’t put in side mass blocks into the guitar so will reducing the back brace do that ...
by davidafterwork
Mon Mar 01, 2021 1:20 am
Forum: Contemporary Acoustic Guitar Design and Build - Trevor Gore
Topic: Mono mobility (Martin and my TG style) results
Replies: 16
Views: 3397

Re: Mono mobility (Martin and my TG style) results

Thanks for the response My question now is according to 22.3 in Book 2 the "...main cavity resonance and the main top resonance must not be exactly an octave apart.." 1 My main body is 97 so am i right in saying it should be 95 ( between 2 semi tones)?? 2 My top is 177 so should come down to 170 (be...
by davidafterwork
Sat Feb 27, 2021 7:02 pm
Forum: Contemporary Acoustic Guitar Design and Build - Trevor Gore
Topic: Mono mobility (Martin and my TG style) results
Replies: 16
Views: 3397

Mono mobility (Martin and my TG style) results

Hello all I have done my tests ( pic attached) on my 1st TG style guitar and my Martin OM 28. As I said I really love the Martin guitar sound ( bought new this year) and wanted to see if I could measure my results against it and learn something. The pic showing all my results is below. I’m afraid it...
by davidafterwork
Wed Feb 17, 2021 4:53 am
Forum: Contemporary Acoustic Guitar Design and Build - Trevor Gore
Topic: Monopole mobility again...!
Replies: 7
Views: 1670

Re: Monopole mobility again...!

Thanks Dave. I am going to do all tests on mine and the Martin at the weekend and will be getting back to you all for a few tips to see what the most likely culprit is in my not too great sounding build!
Dave
by davidafterwork
Tue Feb 16, 2021 9:53 pm
Forum: Contemporary Acoustic Guitar Design and Build - Trevor Gore
Topic: Monopole mobility again...!
Replies: 7
Views: 1670

Re: Monopole mobility again...!

John Thtats really great that you took the time to respond in that detail...much appreciated and I will be saving that info for my next build! I am slightly puzzled now in that I am not too impressed with the sound ( I tend to compare my sound to the Martin 00 28 ) but yet the figures appear good......
by davidafterwork
Tue Feb 16, 2021 4:36 am
Forum: Contemporary Acoustic Guitar Design and Build - Trevor Gore
Topic: Monopole mobility again...!
Replies: 7
Views: 1670

Re: Monopole mobility again...!

Sorry my mistake! I used exactly 1 kg weight
Dave
by davidafterwork
Tue Feb 16, 2021 2:30 am
Forum: Contemporary Acoustic Guitar Design and Build - Trevor Gore
Topic: Monopole mobility again...!
Replies: 7
Views: 1670

Monopole mobility again...!

Hello all I would really appreciate some feedback here as I have built a TG method guitar and not too happy with the sound. If someone could help me out with a few tips it would be great! Here goes.. The guitar is a 00 type 14 fret steel string Response with strings on etc are as follows 97 Hz with ...
by davidafterwork
Thu Sep 17, 2020 2:07 am
Forum: Contemporary Acoustic Guitar Design and Build - Trevor Gore
Topic: Anyone able to have a quick check here???
Replies: 4
Views: 2783

Re: Anyone able to have a quick check here???

Thanks for the replies, I have been away and will try pick up them tips when back in the shop
Dave
by davidafterwork
Fri Sep 11, 2020 9:46 pm
Forum: Instrument Builders Forum
Topic: Side sanding dish motor & side bender??
Replies: 6
Views: 2743

Re: Side sanding dish motor & side bender??

Thanks for the replies I will check out those ideas for sure
Dave
by davidafterwork
Wed Sep 09, 2020 2:51 am
Forum: Instrument Builders Forum
Topic: Side sanding dish motor & side bender??
Replies: 6
Views: 2743

Re: Side sanding dish motor & side bender??

That’s a great idea. If you have a pic of any of the ideas please send! Sanding the rims can be hard going I find and also my side bending could do with a bit more accuracy. I have the sides in the mould and dish underneath when sanding but I see a lot of people have the dish on top and a 25mm pipe ...
by davidafterwork
Tue Sep 08, 2020 12:53 am
Forum: Contemporary Acoustic Guitar Design and Build - Trevor Gore
Topic: Anyone able to have a quick check here???
Replies: 4
Views: 2783

Anyone able to have a quick check here???

Hello I have just closed the box on my first TG method guitar and done the tests. I am wondering if 1 I am reading the right peak for the back? 2 Should I sand further the top or expect it to drop from 200 to 180 when neck and bridge are on? I am going by 12-18 in bk 2 where it is expected that numb...
by davidafterwork
Mon Sep 07, 2020 5:42 pm
Forum: Instrument Builders Forum
Topic: Side sanding dish motor & side bender??
Replies: 6
Views: 2743

Side sanding dish motor & side bender??

Hello I am trying to up my game as an amateur guitar maker and would like a motorised sanding dish ( I have the dish already) and also a reasonably priced side bending jig that would also help me bend my own wood bindings ( I have a heat blanket and made my own side mould for bending which works but...
by davidafterwork
Sat Aug 29, 2020 1:50 am
Forum: Contemporary Acoustic Guitar Design and Build - Trevor Gore
Topic: List of tests... hoping I have it!
Replies: 0
Views: 2528

List of tests... hoping I have it!

Hello all I am doing my first TG guitar ( l have used the 2nd book a LOT and it’s great but very nervous of the whole test thing..) and wouldn’t mind if someone could check my list below and correct me if I am missing anything?? 1 Thickness the panels ( I am happy with this now and thanks to the hel...
by davidafterwork
Wed Aug 26, 2020 11:24 pm
Forum: Instrument Builders Forum
Topic: Motivation
Replies: 8
Views: 2930

Re: Motivation

Funny story .. When I was serving my time as a carpenter the foreman would always make us take 15 minutes around 4pm each day when the place would be messy and do a clean up. It used to drive us mad but now 40 years later I do it all the time in my workshop and have a portable battery hoover that I ...
by davidafterwork
Mon Aug 24, 2020 5:50 pm
Forum: Instrument Builders Forum
Topic: Motivation
Replies: 8
Views: 2930

Re: Motivation

Hello there This is a subject I think about a lot (too much no doubt!!) I build as a hobby first of all. I have built approx 20 guitars...some good some not so good, since 2015. As they have got better I have begun to donate them to various causes. Some went to the local music college who gave them ...
by davidafterwork
Fri Aug 21, 2020 5:42 pm
Forum: Instrument Builders Forum
Topic: Still not getting the sound I want...help!!
Replies: 40
Views: 11758

Re: Still not getting the sound I want...help!!

Very bad English there..!! I meant to say I am good to go I am going to try a live back as well so will use the correct value of 55 as per the book. Really looking forward to this now so hopefully it will go ok even though I am not too sure of what’s next Re the x bracing and if any tests required a...
by davidafterwork
Fri Aug 21, 2020 1:01 am
Forum: Instrument Builders Forum
Topic: Still not getting the sound I want...help!!
Replies: 40
Views: 11758

Re: Still not getting the sound I want...help!!

Hello
I have now adjusted my excel sheet to match the formula for thickness and I am getting the same result as the screenshot so I cannot hunk I am good to go
I will do a live back now that I am doing the TG method on this guitar so is the thickness spreadsheet ok for that as well????
by davidafterwork
Thu Aug 20, 2020 7:20 pm
Forum: Instrument Builders Forum
Topic: Still not getting the sound I want...help!!
Replies: 40
Views: 11758

Re: Still not getting the sound I want...help!!

No problem Martin I know you are busy. I have a google docs sheet now and will try and relate that to my excel and come back to you if still stuck
Dave
Ps I hope all this is worth it in the end!!! Ha ha
by davidafterwork
Thu Aug 20, 2020 5:25 pm
Forum: Instrument Builders Forum
Topic: Still not getting the sound I want...help!!
Replies: 40
Views: 11758

Re: Still not getting the sound I want...help!!

Hello
I cannot upload my spreadsheet not can I see the formulae in the Google Docs sheet...
If someone could have a look at the thickness formula in this screenshot as I think the error might be there.
by davidafterwork
Thu Aug 20, 2020 3:08 pm
Forum: Instrument Builders Forum
Topic: Still not getting the sound I want...help!!
Replies: 40
Views: 11758

Re: Still not getting the sound I want...help!!

Thanks Trent but I didn’t see anything until now as I never used that facility before! Thanks I will check out and let you know.
Dave
by davidafterwork
Wed Aug 19, 2020 5:38 pm
Forum: Instrument Builders Forum
Topic: Still not getting the sound I want...help!!
Replies: 40
Views: 11758

Re: Still not getting the sound I want...help!!

Hello there Is there anyone who could have a quick look at the spreadsheet I have done as it doesnt seem to be giving out a correct thickness?? I cannot upload but can send directly to some kind volunteers email address... It was copied as a screenshot form the forum ( thanks Martin!) but formulae i...
by davidafterwork
Tue Aug 18, 2020 2:49 am
Forum: Instrument Builders Forum
Topic: Still not getting the sound I want...help!!
Replies: 40
Views: 11758

Re: Still not getting the sound I want...help!!

Dave In The video TG only does 3 for each raw plate and ten on the finished guitar...?? Today again I got what seemed to be reasonably correct ( judging by the target numbers in 6.2 but still the cross grain test throws out very high numbers for some reason....from 150 to 300 which can’t be right I’...