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Thread: Mandolins in progress

  1. #6751
    Mando-Accumulator Jim Garber's Avatar
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    Default Re: Mandolins in progress

    Yes, that is for the Ugly Side of Luthierie thread.
    Jim

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  2. #6752
    Moderator JEStanek's Avatar
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    Default Re: Mandolins in progress

    I actually am thankful for that photo, John. So many of our builders post (expertly composed and exposed) photos of immaculate instruments perfectly finished and completely drool worthy (like yours), tis refreshing to see one in progress looking like a work in progress!
    There are two things to aim at in life: first, to get what you want; and, after that, to enjoy it. Only the wisest of mankind achieve the second. Logan Pearsall Smith, 1865 - 1946

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  3. #6753
    Registered User Steve Sorensen's Avatar
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    Default Re: Mandolins in progress

    ". . . so, you're saying your mandolins AREN'T available with fingerboards in 'Frog Tape' green with matching frets ? ? ? "

  4. #6754
    Resonate globally Pete Jenner's Avatar
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    Default Re: Mandolins in progress

    Here are some more in progress.


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    The more I learn, the less I know.

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  6. #6755
    Registered User sunburst's Avatar
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    Default Re: Mandolins in progress

    A little scraping, filing and sanding later...
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    ...or was it all just Photoshop?...

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  8. #6756

    Default Re: Mandolins in progress

    Quote Originally Posted by sunburst View Post
    A little scraping, filing and sanding later...
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    ...or was it all just Photoshop?...
    More like David Copperfield. Nice work! Now for your next trick.......

  9. #6757
    Registered User sunburst's Avatar
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    Default Re: Mandolins in progress

    Quote Originally Posted by StevenS View Post
    ". . . so, you're saying your mandolins AREN'T available with fingerboards in 'Frog Tape' green with matching frets ? ? ? "
    What rock have you been under?? Green is soooooo last week!
    Here we have a "tarp" blue fingerboard with matching frets. A stunning accent to a soon-to-be stained spruce top.
    Click image for larger version. 

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  11. #6758
    Registered User Steve Sorensen's Avatar
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    Default Re: Mandolins in progress

    Just for John -- Bench au natural, flat daylight balanced neon lighting and crummy shot layout -- just slapped some strings on this mandola and ready for a test ride.

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    Ever since I put a mandolin top-down on a screwdriver, that's about as messy as I let it get. My Mom would be so proud . . .

    Steve

  12. #6759
    Resonate globally Pete Jenner's Avatar
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    Default Re: Mandolins in progress

    Quote Originally Posted by StevenS View Post
    Just for John -- Bench au natural, flat daylight balanced neon lighting and crummy shot layout -- just slapped some strings on this mandola and ready for a test ride.

    Click image for larger version. 

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    Ever since I put a mandolin top-down on a screwdriver, that's about as messy as I let it get. My Mom would be so proud . . .

    Steve

    That's a disgrace Steve. The towel isn't even straight.
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  13. #6760
    Masamando Steve Hinde's Avatar
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    Default Re: Mandolins in progress

    Ready to sand and buff then out this weekendClick image for larger version. 

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  15. #6761
    Registered User rb3868's Avatar
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    Default Re: Mandolins in progress

    that blue one is stunning!

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    hank 

  17. #6762
    Registered User Steve-o's Avatar
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    Default Re: Mandolins in progress

    Not sure if its dark blue or black, but I agree, "stunning" is the word. Reminds me of Hans Brentrup's "blackburst." Gorgeous flame on the right too.

  18. #6763
    Registered User Steve Sorensen's Avatar
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    Default Re: Mandolins in progress

    Sprite Two-Point mandola out for a test-ride in the white. For some reason, the Facebook video player squashed the picture . . .





    Here's the same mandola after color, scraping the bindings and two coats of varnish --

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    Interesting birdseye that looks like bubbles meandering up through a soda.

    Steve

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  20. #6764
    Registered User Max Girouard's Avatar
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    Default Re: Mandolins in progress

    Big ole pile of wood destined to become a batch of mandolas............
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  22. #6765

    Default Re: Mandolins in progress

    batch of mandolas......boy, Max, you are very ambitious.
    There's nothing better than first-hand experience.

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  24. #6766
    Registered User Max Girouard's Avatar
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    Default Re: Mandolins in progress

    Joining tops with hide glue. A quick pass over the jointer, then a little hand planing, inspection for a light tight joint then glueing the plates with the rubbed joint technique.
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  26. #6767

    Default Re: Mandolins in progress

    Is this ugly enough for you, John?

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  27. #6768
    Registered User sunburst's Avatar
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    Default Re: Mandolins in progress

    Nah, you can do better than that! (...worse than that?)
    No glue squeeze-out, no gouges or sanding scratches, no blood spots...

  28. #6769
    Luthier Wanna be Sitka's Avatar
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    Default Re: Mandolins in progress

    Martin,

    would you mind explaining how you attach your top/back to the sides? I've heard that end grain doesn't make the strongest glue joint. Are you using some sort of support inside other than the end blocks?

    Micah

  29. #6770
    Registered User Max Girouard's Avatar
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    Default Re: Mandolins in progress

    I purchased a CNC a little over a year ago. After 300 hours of learning cad and cam programs as well as machine operation and hold down methods, I'm at the point where if I can think it I can make it. First shot is my outside carving vacuum fixture. Next is the vacuum pump I'm running to pull the plate to the fixture, next the roughing pass, then a "finishing" pass. The jig is switched out to one that will hold the plate upside down and level, and the inside is hogged out. I leave the plates on the thick side to allow for final shaping by hand and hand graduation. This is actually the top profile I'm cutting on a piece of maple that I'll be using for a top secret experiment later in the year.
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  31. #6771
    Registered User Max Girouard's Avatar
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    Default Re: Mandolins in progress

    Next I hand graduate the plate using finger planes followed by a sanding. Then I'll check the plate flexing it and seeing how it feels. I'll then continue on with the scrapers until the plate feels right. I'm not even concerned with graduation numbers at this point, just getting it until it feels right depending on the piece of wood I'm using. Next I'll stick the plate in my tonebar fitting jig I made. I'll cut some bar stock, then band saw it to approximate shape. I then use a bearing and a pencil to get accurate plate profiles drawn on the bar and saw and sand close to shape. Then the bar is loaded into the jig. Pony clamps hold the bar from sliding back and forth and rubber bands provide just enough pressure to hold the bar stock down.
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  33. #6772
    Registered User Max Girouard's Avatar
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    Default Re: Mandolins in progress

    I'll then take some 80 grit stikit, with a paper backing applied and run it under the bar. After a few passes I get close, but not close enough. There can be no gaps at all. The next pic shows the bar after it has been sanded to 220. The plate is also sanded to 220 in just the spot that the tone bar meets. After I'm sure I've got a good fit, I'll rotate the jig to the next tonebar position and repeat. I glue up the tonebars with hot hide glue in a go bar deck. The second to last photo with the go bars just shows a dry fit to ensure I don't have any gaps. The last photo is of my go bar deck with the jig I made to hold the plate upside down and flat along with the go bars, my glue pot and a heat gun to warm the parts prior to glueing.
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  35. #6773

    Default Re: Mandolins in progress

    Slick work, Max! Nice fixtures, and great refinement of the Tom Ribbecke tone bar fitting technique.

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  37. #6774
    Masamando Steve Hinde's Avatar
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    Default Re: Mandolins in progress

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ID:	99871My first electric mandolin. Hollow body. Maple top and back. Rosewood sides and neck. 14 inch scale. Cumberland acoustics bridge and James tailpiece. Bill and Becky Lawrence twin blades humbucker. Quiet enough unplugged for some private practice that will not disturb. (my wife thanks me) Loud enough to rattle the windows plugged in.

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  39. #6775
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    Default Re: Mandolins in progress

    Cool electric, Steve H! Looks rockin' good!
    Steve

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