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Thread: Fan-fret mandocello build

  1. #26
    Registered User tonydxn's Avatar
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    Default Re: Fan-fret mandocello build

    One of the most difficult parts to get clear in my mind was how to handle the neck/head transition. The simplest way is just to plane the head perpendicular to the top of the fingerboard, but that means the head sits at a weird angle, which I didn't want. Here is a YouTube video of someone having a go at explaining the 'proper' way of doing it.

    I thought up my own simple way of doing it:

    Draw a line square across the neck blank level with the top of the nut on the treble side
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    Plane the head angle to this line in the normal way:
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    The fingerboard will overhang the head on the bass side:
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    Draw a line on the head level with the top of the nut:
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    Glue a block of fingerboard wood to line up with that line:
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    Plane level with neck:
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    The fingerboard will sit on the resulting wedge (bad photo - there isn't a gap there, honest!):
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    Funny how you find existing threads on the Cafe just after you posted things yourself . . . here is an old thread on fan fret headstock angles.
    Last edited by tonydxn; Nov-14-2019 at 4:43pm.
    Mandolins: Bandolim by Antonio Pereira Cabral
    German flatback by unknown maker converted from a descant Waldzither

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  3. #27
    Mando-Accumulator Jim Garber's Avatar
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    Default Re: Fan-fret mandocello build

    Ok, Tonydxn et al: after you solve this luthiery puzzle the next level it to create a fan-fret Gelas model mandolin. I think I might have to take some dramamine for that one.

    Here's our friend John Maddock (Tavy) talking and playing a mandolin. "and it has not been hit on the face with a large hammer."

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    Jim

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  5. #28
    Registered User Tavy's Avatar
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    Default Re: Fan-fret mandocello build

    One of the most difficult parts to get clear in my mind was how to handle the neck/head transition.
    Haha, yes those angles will make your brain hurt - the way you did yours was pretty much what I did, which is to say a small ebony fillet under the bass side. Certainly not my idea, I think it came from around here....

    after you solve this luthiery puzzle the next level it to create a fan-fret Gelas model mandolin
    Ah now steady, even I wouldn't want to do that, and I've surely done some daft things

    You could stick a Ceccherini style resonator/soundboard inside for even bigger "zing" though...

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  7. #29
    Registered User tonydxn's Avatar
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    Default Re: Fan-fret mandocello build

    Quote Originally Posted by Tavy View Post
    You could stick a Ceccherini style resonator/soundboard inside for even bigger "zing" though...
    Challenges enough on this one, thanks!

    I think I've covered most aspects of the build that are different because of the fan-fret format. I'll post occasional photos as I pass significant milestones. And a sound sample when it's done (unless it's too embarassing . . .)
    Mandolins: Bandolim by Antonio Pereira Cabral
    German flatback by unknown maker converted from a descant Waldzither

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  9. #30
    Registered User tonydxn's Avatar
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    Default Re: Fan-fret mandocello build

    Sides glued to neck:
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    Mandolins: Bandolim by Antonio Pereira Cabral
    German flatback by unknown maker converted from a descant Waldzither

  10. #31
    Registered User tonydxn's Avatar
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    Default Re: Fan-fret mandocello build

    Back ready to glue on:
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    Mandolins: Bandolim by Antonio Pereira Cabral
    German flatback by unknown maker converted from a descant Waldzither

  11. #32
    Registered User tonydxn's Avatar
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    Default Re: Fan-fret mandocello build

    Soundboard ready to glue on, and a closer look at the struts I've done:
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    I took Marty Jacobson's advice (post #12) and added some lengthwise struts. These will also support the ends of the bridge, which otherwise would just have been sitting over unsupported soundboard (I was never sure if that was a good idea).
    Mandolins: Bandolim by Antonio Pereira Cabral
    German flatback by unknown maker converted from a descant Waldzither

  12. #33

    Default Re: Fan-fret mandocello build

    Should work. Looking forward to hearing how it sounds.

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  14. #34
    Registered User tonydxn's Avatar
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    Default Re: Fan-fret mandocello build

    Quote Originally Posted by Marty Jacobson View Post
    Should work. Looking forward to hearing how it sounds.
    My bracing is much lighter than Joe Mendel put into the one he made for Walt (post #12 & 16). Walt put some pretty heavy strings on his. I will be using much lighter ones.
    Mandolins: Bandolim by Antonio Pereira Cabral
    German flatback by unknown maker converted from a descant Waldzither

  15. #35
    Registered User amowry's Avatar
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    Default Re: Fan-fret mandocello build

    Looks good so far! The headstock is certainly the trickiest part of these, so if you can do that, you can do the rest. My preference is to use a compound headstock angle, which for me is a little easier to wrap my mind around than the fretboard wedge:


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  17. #36
    Registered User tonydxn's Avatar
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    Default Re: Fan-fret mandocello build

    Ready for spraying. I'm not sure how long that will take as I'm trying a new finish
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    Mandolins: Bandolim by Antonio Pereira Cabral
    German flatback by unknown maker converted from a descant Waldzither

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  19. #37
    Registered User Tavy's Avatar
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    Default Re: Fan-fret mandocello build

    Wow that's quick.... looking good there.

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