Search found 44 matches

by Gerry Gruber
Fri Feb 26, 2016 10:55 am
Forum: Wood and Materials Q&A
Topic: Where to source crushed turquoise
Replies: 6
Views: 4706

Re: Where to source crushed turquoise

Thanks for the additional suggestions, David K. and David B. Much appreciated.
by Gerry Gruber
Wed Feb 24, 2016 12:00 pm
Forum: Wood and Materials Q&A
Topic: Where to source crushed turquoise
Replies: 6
Views: 4706

Re: Where to source crushed turquoise

The Treeline product states that it could be stabilzed or manmade. Does anyone have suppliers they've used to source gem quality turquoise (i.e., Persian or Arizona)?
by Gerry Gruber
Tue Feb 23, 2016 1:57 pm
Forum: Wood and Materials Q&A
Topic: Where to source crushed turquoise
Replies: 6
Views: 4706

Re: Where to source crushed turquoise

Thanks, Carl.
by Gerry Gruber
Tue Feb 23, 2016 11:06 am
Forum: Wood and Materials Q&A
Topic: Where to source crushed turquoise
Replies: 6
Views: 4706

Where to source crushed turquoise

My latest commission will include a fingerboard inlay of a rosary with crushed genuine turquoise as the beads. For those of you who have worked with crushed turquoise, where do you normally get it? Craft shops? Jewellery supply stores? Or do you get turquoise beads and crush them yourself? Many than...
by Gerry Gruber
Sat May 18, 2013 8:45 pm
Forum: Glues and Finishes
Topic: Nitro over Pearloid?
Replies: 4
Views: 2147

Re: Nitro over Pearloid?

Thanks Mark. Much appreciated.
by Gerry Gruber
Fri May 10, 2013 12:48 pm
Forum: Glues and Finishes
Topic: Nitro over Pearloid?
Replies: 4
Views: 2147

Re: Nitro over Pearloid?

Thanks, Barry. I've heard from a few others on this matter, and the prognostication is good. I suspect that the lacquer will in fact soften the pearloid some - we don't store lacquer or lacquer thinner in plastic bottles for that very reason. But, hopefully, the pearloid will harden up again as the ...
by Gerry Gruber
Sat May 04, 2013 9:05 am
Forum: Glues and Finishes
Topic: Nitro over Pearloid?
Replies: 4
Views: 2147

Nitro over Pearloid?

I'm planning a build for export to the USA, and am hoping to avoid the USFW "tax" by not using any shell product. I'm considering pearloid for fretmarkers and for headstock inlay. However, given that pearloid is basically plastic, I suspect the headstock inlay could melt under my nitro finish. Has a...
by Gerry Gruber
Fri May 03, 2013 5:19 pm
Forum: Wood and Materials Q&A
Topic: New restrictions on cocobolo?
Replies: 4
Views: 2770

Re: New restrictions on cocobolo?

Hi David. To my knowledge, you only need be concerned if you plan to sell the raw Madagascar ebony (to someone outside of the USA ). If you build a guitar with it, and export the guitar, it isn't covered, and you don't need a permit.
by Gerry Gruber
Wed May 01, 2013 9:04 am
Forum: Wood and Materials Q&A
Topic: New restrictions on cocobolo?
Replies: 4
Views: 2770

Re: New restrictions on cocobolo?

Ok. It looks lke cocobolo (along with various other woods, as Beate has mentioned) will be moved from Appendix III to Appendix II effective June 12th, and if my German is up to snuff, this website indicates that it is for raw wood only (footnote 6), not finished instruments. http://www.bfn.de/0305_c...
by Gerry Gruber
Tue Apr 30, 2013 9:32 am
Forum: Wood and Materials Q&A
Topic: New restrictions on cocobolo?
Replies: 4
Views: 2770

New restrictions on cocobolo?

I'm just about to begin a cocobolo guitar for export to the US (I live in Canada), and was doing some research on cocobolo. Until recently, cocobolo (Dalbergia retusa) has been listed in CITES Appendix III (for Panama and Guatamala populations only). However, I just read the following, which comes f...
by Gerry Gruber
Wed May 16, 2012 9:20 am
Forum: Flat-Top Acoustic Guitars and Bass Guitars
Topic: Inlaying purfling around mother of pearl rosette
Replies: 10
Views: 4812

Re: Inlaying purfling around mother of pearl rosette

I've used a variation on Mike S.'s approach with success. I break the process into two steps: 1. Route the entire width, and install the perfling lines, but instead of the MOP, install a teflon strip the same dimension as your MOP. Then flood the channel with CA. 2. Once dry, pull the teflon strip o...
by Gerry Gruber
Wed May 16, 2012 9:02 am
Forum: Flat-Top Acoustic Guitars and Bass Guitars
Topic: String height at the twelfth fret 25.4 scale
Replies: 11
Views: 4740

Re: String height at the twelfth fret 25.4 scale

To Michael's point about getting the frets perfectly on the same plane... perhaps that is why Cumpiano and Natelson suggested the higher settings, as their book is oriented towards novice builders with minimal tooling. Assuming less experienced builders may not achieve perfectly leveled frets, they ...
by Gerry Gruber
Tue May 15, 2012 11:22 am
Forum: Flat-Top Acoustic Guitars and Bass Guitars
Topic: String height at the twelfth fret 25.4 scale
Replies: 11
Views: 4740

Re: String height at the twelfth fret 25.4 scale

I don't go as low as Bob, but close. I build only steel-strings, and try to set the low E at 6/64" and the high E at 5.25/64". There is no one answer, as it depends a lot of the style of play that the guitar will experience. If I were building a guitar for someone who wanted to primarily play rhythm...
by Gerry Gruber
Wed Apr 11, 2012 9:30 am
Forum: Flat-Top Acoustic Guitars and Bass Guitars
Topic: William Cumpiano Interview
Replies: 24
Views: 45227

Re: William Cumpiano Interview

An very enjoyable and thoughtful read. Thanks, William and Charles.

Charles, have you given thought to repeating this exercise with other luminaries of our trade? Grit Laskin, Kevin Ryan, Charles Fox, Ervin Somogyi... come to mind.
by Gerry Gruber
Fri Mar 30, 2012 10:21 am
Forum: Tools and Jigs
Topic: Help create an FAQ for nut files
Replies: 49
Views: 75710

Re: Help create an FAQ for nut files

I read on the forum a few years back about someone repairing a nut slot that was cut too deep by putting some nut powder back into the slot and then applying some CA to it. (Sorry I can't remember who posted the idea.) I've never had to do this myself, and so i don't know how useful it is. But, I ca...
by Gerry Gruber
Fri Mar 30, 2012 10:05 am
Forum: Flat-Top Acoustic Guitars and Bass Guitars
Topic: Routing the edges of the top/back
Replies: 11
Views: 5188

Re: Routing the edges of the top/back

I like to make my binding channels in four steps. First I set my router (laminate trimmer) for half the thickness and half the height as the final channel will be. My bindings are just less than 1/16" by 1/4". So, in the first run, I am taking off less than 1/32" thick and 1/8" deep. I then set the ...
by Gerry Gruber
Fri Mar 30, 2012 9:38 am
Forum: Flat-Top Acoustic Guitars and Bass Guitars
Topic: cut away advice
Replies: 20
Views: 9155

Re: cut away advice

Hi Jonny. Two issues... the mechanical/building issues in putting a cutaway in a smaller upper bout, and the tonal issues. I build what I call a grand concert with a 10.5" upper bout. This is slightly wider than your plan, but close. With a small upper bout, the cutaway will be tighter (smaller radi...
by Gerry Gruber
Tue Mar 13, 2012 7:32 pm
Forum: Flat-Top Acoustic Guitars and Bass Guitars
Topic: Questions regarding top and back radius choices
Replies: 11
Views: 5458

Re: Questions regarding top and back radius choices

I think to get a good sense of what your options are and the consequences in terms of the fingerboard overhang are to get a nice big piece of drafting board paper, and sharp pencil and nice long ruler, and draw your guitar - side angle - at full scale. Or if you are handy with CAD, so much the bette...
by Gerry Gruber
Sun Mar 11, 2012 3:03 pm
Forum: Flat-Top Acoustic Guitars and Bass Guitars
Topic: Tapping threads in neck for bolt on
Replies: 43
Views: 14410

Re: Tapping threads in neck for bolt on

I use Mario's system as well. I get my hanger bolts from Home Depot, and the portion that screws into the heel has wood screw threads, not machine threads. (At the other end, there are machine threads.) I also insert the maple dowel, keeping the grain lines of the dowel perpendicular to the screw/bo...
by Gerry Gruber
Sun Mar 11, 2012 2:38 pm
Forum: Flat-Top Acoustic Guitars and Bass Guitars
Topic: Fox Bender - Fixing a Crease in Bent Side
Replies: 5
Views: 3191

Re: Fox Bender - Fixing a Crease in Bent Side

Hi Steve. I've found that spring steel can stain the wood. I like to put a layer of craft (brown bag) paper between the wood and the steel slat. (Incidentally, I bend on a pipe, and steel slats are just as applicable with that setup.) Keep in mind too that your linings will reinforce the side, and i...