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by kiwigeo
Fri Nov 27, 2020 9:06 am
Forum: Instrument Builders Forum
Topic: Movement at The Station
Replies: 2
Views: 30

Movement at The Station

Its been a busy week here. After 12 months packed up at the back of the garage and in a storage unit the workshop is finally in the process of being set up. The temporary bathroom is now a dedicated wood store/finishing room and the cabinet work from the kitchen in the old house is being re-birthed ...
by kiwigeo
Thu Nov 26, 2020 3:06 pm
Forum: Anything Goes
Topic: Frequency # 30 guitar
Replies: 2
Views: 62

Re: Frequency # 30 guitar

Less weight/more stiffness in the top...or added mass in the sides.
by kiwigeo
Tue Nov 24, 2020 11:13 am
Forum: Instrument Builders Forum
Topic: Baritone Ukulele
Replies: 6
Views: 149

Re: Baritone Ukulele

1.75mm is getting in the thin side.

Bob_H wrote:
Tue Nov 24, 2020 11:07 am
Thanks - the top is fairly light (1.75 mm) and the Sitka is fairly coarse and not particularly stiff. I will try to keep an eye on this. I suspect the coarseness and perhaps heavy handed sanding may have contributed to patches of ridging- thanks again
by kiwigeo
Tue Nov 24, 2020 8:47 am
Forum: Instrument Builders Forum
Topic: More mandolin thoughts - the end result
Replies: 7
Views: 151

Re: More mandolin thoughts - the end result

Nice work Professor Coombe... :D
by kiwigeo
Tue Nov 24, 2020 8:46 am
Forum: Instrument Builders Forum
Topic: Baritone Ukulele
Replies: 6
Views: 149

Re: Baritone Ukulele

I'm with Allen with the inter-brace sinking of the top. How thin is the top? How stiff is the Sitka? Re sanding out softer grain.....this can happen if you don't sand using a block and/or you're applying too much pressure during sanding. Your top wood looks like the grain is fairly coarse so this mi...
by kiwigeo
Sun Nov 22, 2020 4:26 pm
Forum: Anything Goes
Topic: 12 strings 70s ibanez concord 684 with bridge issue and need some TLC
Replies: 9
Views: 303

Re: 12 strings 70s ibanez concord 684 with bridge issue and need some TLC

Did you have a caul on the underside of that top while re-gluing the bridge?
by kiwigeo
Thu Nov 19, 2020 3:11 pm
Forum: Instrument Builders Forum
Topic: The Luthier Forum Admin who hasnt built a Guitar for 12 months.
Replies: 9
Views: 676

Re: The Luthier Forum Admin who hasnt built a Guitar for 12 months.

The vents are ventilating the area under the suspended concrete slab. There are also three fans that run for a few hours each day to help move the air around. The rear portion of the building has slab on ground floor. Martin, how are to vents at the bottom of the walls connected to the inside of the...
by kiwigeo
Wed Nov 18, 2020 10:45 pm
Forum: Instrument Builders Forum
Topic: The Luthier Forum Admin who hasnt built a Guitar for 12 months.
Replies: 9
Views: 676

Re: The Luthier Forum Admin who hasnt built a Guitar for 12 months.

No main job now...I retired from the oil patch 12 months ago. Half my super went into the new house :D
blackalex1952 wrote:
Thu Nov 12, 2020 11:54 am
ahh the advantages of a job well done and a real job for income support as a luthier, y'ol mad professor you! Cheers! Ross :mrgreen:
by kiwigeo
Sun Nov 15, 2020 5:44 pm
Forum: Contemporary Acoustic Guitar Design and Build - Trevor Gore
Topic: String spacing
Replies: 3
Views: 131

Re: String spacing

My take.....with a single course instrument it's academic which option you go for at the nut end. On a 12 string it's less academic because you've got a bunch more strings. I go equal string centre spacing on my 6 strings and on my 12 strings and lutes I go equal string gap spacing.
by kiwigeo
Sun Nov 15, 2020 11:25 am
Forum: Anything Goes
Topic: 12 strings 70s ibanez concord 684 with bridge issue and need some TLC
Replies: 9
Views: 303

Re: 12 strings 70s ibanez concord 684 with bridge issue and need some TLC

The reason the bridge is lifting at rear is a glue joint failure. The bass side has lifted first because string tension is higher on the side of the bridge. Eventually the whole back will lift. This needs fixing before you start playing with the action. As Richard recommends...take the instrument to...
by kiwigeo
Fri Nov 13, 2020 10:12 pm
Forum: Instrument Builders Forum
Topic: Lay flat fire hose
Replies: 8
Views: 438

Re: Lay flat fire hose

Sounds like he's doing a binding job on a really huge guitar?
Mark McLean wrote:
Fri Nov 13, 2020 10:08 pm
I am trying to work out how a fire hose becomes a clamp. Haven’t worked out the answer yet.
by kiwigeo
Fri Nov 13, 2020 10:46 am
Forum: Instrument Builders Forum
Topic: Lay flat fire hose
Replies: 8
Views: 438

Re: Lay flat fire hose

Check out local fire service....I'd say they often chuck hoses that have a few holes in them.
nkforster wrote:
Thu Nov 12, 2020 10:18 pm
Anyone have any offcuts of lay flat fire hose? 75mm wide+, 50cm long +? I'd like to make a clamp using one but don't really want to buy 30m of the stuff to do so.
by kiwigeo
Sat Nov 07, 2020 7:46 am
Forum: Instrument Builders Forum
Topic: Yairi Gakki repair - your advice please.
Replies: 10
Views: 853

Re: Yairi Gakki repair - your advice please.

TallDad71 wrote:
Fri Nov 06, 2020 11:46 pm

Yairi Gakki is Sadao Yairi. The other Yairi was Kazuo Yairi. Hiroshi Yairi was Sadai Yari's son

Now repeat out loud 10 times. 😝🤣
Having a Japanese wife and speaking the language also helps :mrgreen:
by kiwigeo
Tue Nov 03, 2020 8:28 pm
Forum: Instrument Builders Forum
Topic: Yairi Gakki repair - your advice please.
Replies: 10
Views: 853

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.
by kiwigeo
Tue Nov 03, 2020 7:13 pm
Forum: Instrument Builders Forum
Topic: Yairi Gakki repair - your advice please.
Replies: 10
Views: 853

Re: Yairi Gakki repair - your advice please.

That looks like a cedar top.....I have a K Yairi flamenco with a similar looking top. My guitar is a 1970's instrument and it has also lost it's "zing". Cedar tops usually "play in" alot quicker than a spruce top but in some guitars the pay off is they "play out" a lot sooner than a spruce top.
by kiwigeo
Mon Nov 02, 2020 8:51 am
Forum: Instrument Builders Forum
Topic: The Luthier Forum Admin who hasnt built a Guitar for 12 months.
Replies: 9
Views: 676

Re: The Luthier Forum Admin who hasnt built a Guitar for 12 months.

LOL.....it pissed down the day after that photo was taken.
Dave M wrote:
Mon Nov 02, 2020 3:22 am
Pleased you got it finished Martin. Looks smart.

Jeez I could envy you those bright blue skies!

Dave in a very grey and wet UK
by kiwigeo
Sun Nov 01, 2020 10:34 am
Forum: Instrument Builders Forum
Topic: Tracing difficulty
Replies: 2
Views: 363

Re: Tracing difficulty

I just run a pencil flattened on one side (tape wrapped around pencil to stop exposed lead rubbing onto side) around the side onto a piece of paper. Any irregularites get tidied up either free hand or with aid of a French curve. Hey guys, I’ve been watching the Stew Mac tracing guitar shape video An...
by kiwigeo
Fri Oct 30, 2020 9:43 am
Forum: Instrument Builders Forum
Topic: The Luthier Forum Admin who hasnt built a Guitar for 12 months.
Replies: 9
Views: 676

The Luthier Forum Admin who hasnt built a Guitar for 12 months.

You may have noticed a lack of post from me documenting any builds. Ive been busy building a new house since the start of the year and the workshop had to be packed up so it could be used as a temporary bedroom. The new house is now finished and Im busy clearing out the workshop in preparation for g...
by kiwigeo
Fri Oct 30, 2020 9:23 am
Forum: Instrument Builders Forum
Topic: Guitar sides
Replies: 6
Views: 582

Re: Guitar sides

The main advantage of a laminated side....you don't need to use a full thickness set of valuable tonewood. Inside layer can be wood that is less showy.
by kiwigeo
Wed Oct 14, 2020 1:26 pm
Forum: Instrument Builders Forum
Topic: Classical Guitar Tuners Creaking and Binding Up
Replies: 13
Views: 1645

Re: Classical Guitar Tuners Creaking and Binding Up

When drilling use a brad point bit...more chance of the bit staying centered when you start the hole.
by kiwigeo
Sun Sep 20, 2020 3:38 pm
Forum: Instrument Builders Forum
Topic: Building Conditions
Replies: 8
Views: 1087

Re: Building Conditions

I was born and raised in Christchurch....the place is cold and damp because it's built on a swamp. I solved my
humidity problems by moving to Adelaide :mrgreen:
by kiwigeo
Sat Sep 19, 2020 5:03 pm
Forum: Instrument Builders Forum
Topic: Classical Guitar Tuners Creaking and Binding Up
Replies: 13
Views: 1645

Re: Classical Guitar Tuners Creaking and Binding Up

Possibly rollers binding up in the holes. Try running a reamer through the roller holes...or a piece of dowel with sand paper wrapped around.
by kiwigeo
Wed Sep 09, 2020 3:47 pm
Forum: Contemporary Acoustic Guitar Design and Build - Trevor Gore
Topic: Anyone able to have a quick check here???
Replies: 4
Views: 1138

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

If 180Hz is your target for T(1,1)2 then I'd start by making up your bridge and weighing it. This will give you a better idea of how much drop in T(1,1)2 to expect once the bridge is on. If it was me I probably wouldn't thin the periphery of the lower bout at this stage. I'd get the bridge on and th...
by kiwigeo
Thu Sep 03, 2020 9:43 pm
Forum: Instrument Builders Forum
Topic: Long time no build
Replies: 52
Views: 7069

Re: Long time no build

Might as well add to this thread. My workshop has been packed up for close to 3 years now while I build a new house. The house is nearly finished and I should be moving in mid October. The garage and workshop have been home during the build and once I'm back in the house there'll be a few months spe...
by kiwigeo
Thu Sep 03, 2020 2:19 pm
Forum: Instrument Builders Forum
Topic: Long time no build
Replies: 52
Views: 7069

Re: Long time no build

Nice work mate. I fixed up that photo that was on it's side....makes it easier to see that nice stash of wood behind the guitar :mrgreen: