Search found 109 matches

by Woodsy23
Mon Apr 01, 2019 1:31 pm
Forum: Contemporary Acoustic Guitar Design and Build - Trevor Gore
Topic: Wood for Falcate Braces in UK
Replies: 12
Views: 929

Re: Wood for Falcate Braces in UK

I must have been lucky with the spruce I got for my first falcate built as it bent easily. I clamped the end of each 1.7mm strip to a form of the appropriate shape, draped a damp cloth over it then ran a hot clothes iron over it to press it onto the form. Then I clamped the piece in place for a shor...
by Woodsy23
Mon Mar 25, 2019 12:55 pm
Forum: Instrument Builders Forum
Topic: First Double Bass Build Completed
Replies: 12
Views: 1137

Re: First Double Bass Build Completed

What an outstanding instrument. I'd love to hear more about the building process. It seems to be way more complex than most acoustic guitars.
Well done.
by Woodsy23
Thu Feb 21, 2019 1:06 pm
Forum: Instrument Builders Forum
Topic: Rosewood
Replies: 9
Views: 954

Re: Rosewood

Darryl at Wheeler Custom Lutherie has a lot more wood than he advertises in his online store. I have bought EIR from him a few years ago. Give him a call.
http://www.wheelerguitars.com.au/
by Woodsy23
Thu Feb 14, 2019 1:27 pm
Forum: Instrument Builders Forum
Topic: Testing existing top and back
Replies: 9
Views: 1162

Re: Testing existing top and back

Jack, From your original post, I understand that you have tried to obtain the long and cross grain E values (and Glc) for the wood of the top and back plates and have used both the tap testing (spectrographs) and deflection tests. Both methods are described in "the books" but with the main focus on ...
by Woodsy23
Thu Jan 17, 2019 1:03 pm
Forum: Instrument Builders Forum
Topic: Hollowbody electric
Replies: 18
Views: 2470

Re: Hollowbody electric

Very impressive work. Well done.
by Woodsy23
Wed Dec 19, 2018 12:51 pm
Forum: Contemporary Acoustic Guitar Design and Build - Trevor Gore
Topic: uery for Trevor re Compensation Calculations
Replies: 44
Views: 18851

Re: uery for Trevor re Compensation Calculations

The value of f for all frets except fret 1 is calculated using pythagoras' rule using only the fret position values in column 2 and the action values in column 3 (as in equation 4.7-30 in the black book). For fret 1, there are two slight differences. There is no action value, as such, at the nut, so...
by Woodsy23
Wed Oct 24, 2018 12:56 pm
Forum: Instrument Builders Forum
Topic: How secure is binding?
Replies: 8
Views: 1216

Re: How secure is binding?

The binding should be secure. Most likely it was glued into place. If it does come a bit loos where you do your surgery, it can always be easily fixed with CA glue superglue), particularly if you're not concerned about the appearance after the surgery.
by Woodsy23
Sat Sep 22, 2018 1:19 pm
Forum: Instrument Builders Forum
Topic: Heat marks on Pau Ferro sides
Replies: 2
Views: 849

Re: Heat marks on Pau Ferro sides

Thanks for your response Wayne. I don't think the heat marks occurred on the fox bender as the sides looked clean after that. I wrapped them in damp paper and heated to 300F. It's most likely they occurred while fine tuning the shape on the bending iron although the outside faces only would have bee...
by Woodsy23
Fri Sep 21, 2018 9:12 am
Forum: Instrument Builders Forum
Topic: Heat marks on Pau Ferro sides
Replies: 2
Views: 849

Heat marks on Pau Ferro sides

After final scraping and sanding of the Pau Ferro sides of my current build, there are still stripe marks that I assume have originated during the bending process. They are on the non-cut-away side, which I bent using a fox style bender and then fine tuned on a bending iron. I tried to remove them b...
by Woodsy23
Mon Sep 10, 2018 1:02 pm
Forum: Instrument Builders Forum
Topic: Blush - Yeccchhh
Replies: 11
Views: 2172

Re: Blush - Yeccchhh

Speaking of retarders, I once had a problem with blushing of a nitrocellulose finish. I googled for help and found some advice from a "finishing expert" (which I am not) to spray lightly with retarder. I did that and the blush disappeared instantly and completely (as far as I could tell). I have no ...
by Woodsy23
Wed Apr 04, 2018 1:09 pm
Forum: Instrument Builders Forum
Topic: Airbrush advice
Replies: 10
Views: 2540

Re: Airbrush advice

I am nowhere near as experienced in sunbursting as other posters. I have used a Star LVLP detail gun for spraying a sunburst Stratocaster, mixing the wood dye with the lacquer. However, I have just finished a sunburst "dye stain" on a mandolin using an airbrush (for the first time) and it came out q...
by Woodsy23
Thu Mar 08, 2018 1:13 pm
Forum: Contemporary Acoustic Guitar Design and Build - Trevor Gore
Topic: falcate Failure with an unexpected result
Replies: 22
Views: 11334

Re: falcate Failure with an unexpected result

Would another approach to this problem be to glue the CF tow to the sound board, wait until it dries, then glue the brace on. The CF tow and epoxy can be flattened to a minimal thickness (I would imagine 0.1 to 0.2 mm) and flattening with a small plastic trowel is a good way to ensure that the fibre...
by Woodsy23
Tue Oct 17, 2017 12:52 pm
Forum: Contemporary Acoustic Guitar Design and Build - Trevor Gore
Topic: Strap pin
Replies: 3
Views: 2004

Re: Strap pin

I locate it on the guitar shoulder but I glue a curved off-cut from the guitar side to the inside face to act as reinforcing. That way the material I screw into is at least 4mm thick. You could glue in two reinforcing layers if you wanted the extra strength from 6mm thick timber.
by Woodsy23
Thu Aug 31, 2017 1:11 pm
Forum: Contemporary Acoustic Guitar Design and Build - Trevor Gore
Topic: falcate Failure with an unexpected result
Replies: 22
Views: 11334

Re: falcate Failure with an unexpected result

I was thinking along the same lines (putting a groove in the braces) after discovering the difficulty of getting the correct amount of epoxy during my first falcate build. Too much glue and the CF tow floats out. Too little and the brace may fail or not achieve full composite action between the wood...
by Woodsy23
Tue Apr 11, 2017 12:52 pm
Forum: Instrument Builders Forum
Topic: Advice on fixing edge chips in top and back
Replies: 6
Views: 2437

Re: Advice on fixing edge chips in top and back

Thanks everyone for your tips and advice.
by Woodsy23
Sat Apr 01, 2017 12:14 pm
Forum: Instrument Builders Forum
Topic: Jigs - Are they worth it?
Replies: 11
Views: 5057

Re: Jigs - Are they worth it?

As my manual skills are pretty poor, I kind of get a kick out developing jigs (or modifying those invented by others) that give near perfect results when making parts that I would probably stuff up if I tried making entirely by hand. So I get a bit of joy rather than frustration.
by Woodsy23
Sat Apr 01, 2017 11:48 am
Forum: Instrument Builders Forum
Topic: Advice on fixing edge chips in top and back
Replies: 6
Views: 2437

Advice on fixing edge chips in top and back

Like Rocket, I decided to "broaden my horizons" by building a couple of mandolins. During some over exuberant planing of the plastic binding with a violin plane, I gouged some chips in the European spruce top and red maple back. I would appreciate advice on the best method to repair or conceal them....
by Woodsy23
Thu Nov 10, 2016 12:52 pm
Forum: Instrument Builders Forum
Topic: Affinity Designer for Luthiers
Replies: 24
Views: 8820

Re: Affinity Designer for Luthiers

Thanks for the information of Affinity Designer. I also believe that using CAD and similar programs can be very useful for a luthier. Setting out neck, string and bridge geometry is one example. I have also found printing out component drawings and sticking the printout onto the wood for cutting out...
by Woodsy23
Mon Aug 29, 2016 12:58 pm
Forum: Instrument Builders Forum
Topic: It's Bob's Birthday
Replies: 6
Views: 2613

Re: It's Bob's Birthday

Happy Birthday Bob.
by Woodsy23
Wed Aug 17, 2016 1:22 pm
Forum: Contemporary Acoustic Guitar Design and Build - Trevor Gore
Topic: uery for Trevor re Compensation Calculations
Replies: 44
Views: 18851

Re: uery for Trevor re Compensation Calculations

Martin,

Oops. I didn't see that one. I thought I usually got an email notification of a pm.

Anyway, I'm happy to help if I can. I'll look into it tonight.
by Woodsy23
Thu Aug 11, 2016 12:43 pm
Forum: Instrument Builders Forum
Topic: 12 String SS Falcate braced Ziricote\spruce guitar.
Replies: 47
Views: 21112

Re: 12 String SS Falcate braced Ziricote\spruce guitar.

An outstanding 12 string, John. Great workmanship as usual.

I'm glad the bridge rotation worked out OK. ( it would have been embarrassing for me if it didn't).
by Woodsy23
Wed Aug 03, 2016 12:53 pm
Forum: Instrument Builders Forum
Topic: 12 String SS Falcate braced Ziricote\spruce guitar.
Replies: 47
Views: 21112

Re: 12 String SS Falcate braced Ziricote\spruce guitar.

collinsguitar wrote:Looks wonderful John. I'm not sure about anyone else, but I for one would love to hear the results!
I would love to hear a sample of the sound too.

What saddle and nut compensation did you do, if any?
by Woodsy23
Wed Jul 13, 2016 12:35 pm
Forum: Instrument Builders Forum
Topic: 12 String SS Falcate braced Ziricote\spruce guitar.
Replies: 47
Views: 21112

Re: 12 String SS Falcate braced Ziricote\spruce guitar.

John,
We're all waiting with bated breath for the next instalment post.
by Woodsy23
Sat Jun 18, 2016 7:41 pm
Forum: Contemporary Acoustic Guitar Design and Build - Trevor Gore
Topic: uery for Trevor re Compensation Calculations
Replies: 44
Views: 18851

Re: uery for Trevor re Compensation Calculations

Martin, I'll give you my 2 cents worth in response to questions 2 and 3. For calculating the action values at each fret position, I don't think it really matters whether you use the compensated length or uncompensated length. The component of the action value due to neck relief is quite small and th...
by Woodsy23
Thu Jun 02, 2016 1:38 pm
Forum: Contemporary Acoustic Guitar Design and Build - Trevor Gore
Topic: uery for Trevor re Compensation Calculations
Replies: 44
Views: 18851

Re: uery for Trevor re Compensation Calculations

Martin, I may have mentioned this before in another thread. I adopted the "trial value" approach to the calculation of nut and saddle compensation for each string using Excel. Choose a value for both then get Excel to create a graph of the intonation error. Keep adjusting the trial values until you ...