New project Terz 00-12 cutaway

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Dave Bagwill
Posts: 5952
Joined: Tue Dec 13, 2011 7:44 pm

New project Terz 00-12 cutaway

Post by Dave Bagwill » Thu Nov 24, 2016 7:54 pm

"Terz" as to basic body shape; the lower bout is only 14". Twelve frets to the body, long scale.

Going to try a couple of new things on this one, to be revealed later. So I know they work :-)

Spent a day or two re-forming a couple of molds, one for construction purposes and one for side-bending purposes.
I will be using thick walnut veneers, and laminating them with TB original, clamping them into the mold using the cauls and clamps that Bogdanovich advises.
To that end I purchased a 4x8x1/8 piece of tempered hardboard at HD, $12.98 and cut part of it into 32"x4.5" strips.
Then I thinned the strips on the drum sander - from 1/8" down to .090" or thereabouts.
Then I bent them on a pipe (190*) to get pretty good fit - it doesn't have to be perfect, as the material is pretty thin and the clamps will pull it to the form.
I've got 4 of those strips bent and clamped into the molds overnight.
TBC..
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John Parchem
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Joined: Fri Dec 23, 2011 8:33 pm
Location: Seattle
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Re: New project Terz 00-12 cutaway

Post by John Parchem » Fri Nov 25, 2016 12:17 pm

Looks like a fun project. are you using the tall mold to laminate the sides or the construction mold I see with the clamps?

Dave Bagwill
Posts: 5952
Joined: Tue Dec 13, 2011 7:44 pm

Re: New project Terz 00-12 cutaway

Post by Dave Bagwill » Fri Nov 25, 2016 12:33 pm

I'll be using the tall molds for bending/laminating the sides - doing two at once.

I'll also be bending/laminating the linings using the shorter molds.
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Dave Bagwill
Posts: 5952
Joined: Tue Dec 13, 2011 7:44 pm

Re: New project Terz 00-12 cutaway

Post by Dave Bagwill » Sat Nov 26, 2016 7:36 pm

I cut up a maple board into 16 strips - 4 each for 4 linings - the board was a 3/4"x2" x6' from HD - enough wood for 3-4 guitar's worth of linings and bindings. The thinnest my benchtop bandsaw would cut was .090", so I will use the drum sander to get them down to .045", which x4 will = .180" linings.
Some of the strips are on the cabinet to the left of the saw.
Later today - probably tomorrow actually - I will glue the strips together in a mold, then round the bottom edge with a 1/4" roundover bit in the router.
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Dave Bagwill
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Joined: Tue Dec 13, 2011 7:44 pm

Re: New project Terz 00-12 cutaway

Post by Dave Bagwill » Sun Nov 27, 2016 6:52 pm

I went ahead and built the lining mold per Bogdanovich's book. The last pic shows the almost completed mold - it needs a bit of cleaning up - but the cork is installed and everything fits well.
Attachments
I double-taped the one side of the outside mold to the lining mold and used that neat roto-plane with a bearing go get a nice clean cut.
I double-taped the one side of the outside mold to the lining mold and used that neat roto-plane with a bearing go get a nice clean cut.
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Using two layers of cork and a spacer the width of the linings. I will cut on that line and the spacing for the two halves of the mold will be correct.
Using two layers of cork and a spacer the width of the linings. I will cut on that line and the spacing for the two halves of the mold will be correct.
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-Under permanent construction

John Parchem
Posts: 2755
Joined: Fri Dec 23, 2011 8:33 pm
Location: Seattle
Contact:

Re: New project Terz 00-12 cutaway

Post by John Parchem » Mon Nov 28, 2016 12:19 pm

That looks pretty cool. Are you able to just press in the laminates or do you need to pre-bend them

Dave Bagwill
Posts: 5952
Joined: Tue Dec 13, 2011 7:44 pm

Re: New project Terz 00-12 cutaway

Post by Dave Bagwill » Mon Nov 28, 2016 12:43 pm

Just pull the 4 pieces as a unit into the mold, and clamp away. I'll post a couple more pix a bit later today.
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