Oska Burman Guitars
Luthier / Guitar Maker
Posts: 75
My main instrument is: Steel String Acoustic Guitar
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Post by Oska Burman Guitars on Jan 14, 2024 12:37:52 GMT
Hello again everyone. The other build currently on my bench is this lovely short scale OM in Italian Spruce & Indian Rosewood. If you've read a little about my past builds, you'll know that I have some exceptional & well seasoned Indian Rosewood from master luthier Stefan Sobell's collection & this is yet another cracking example if it! Close & straight grained, heavily striated with a range of dark, rich colours & very well quartered. My client here has also opted for an arm bevel, to alleviate the stresses on his right shoulder. These arm bevels, whilst an optional extra, make for a very comfortable (and well worth it in my opinion) playing experience. There is also a very subtle element included in this build to mark a particular anniversary, which will only be known to my client himself He also plays exclusively with the fleshy part of his fingers, or "pads", so we're going for a really clear, responsive, voluminous tone, without the aid of a pick or fingernails. Once again, I hope you all enjoy following along with this build & do feel free to add your comments along the way. Cheers, Oska. The Indian Rosewood back is joined with my favourite method, the traditional Spanish rope & wedgesAfter scraping it down, the magic of this lovely set is revealedMy classic tiled mosaic rosette made from Hawaiian Koa will be used on this guitarFirst step of inlaying is to rout a channel for the main element & glue that into the soundboardHere I am spreading glue in order to laminate the sidesThen the sides are wrapped tightly with old bicycle inner tubes to keep them in placeBefore finally being put into the vacuum bag to cureSometimes you do things very accurately!Onto gluing the top & bottom blocks to the rimsetThe are bevel support block is marked out before shaping......on the bobbin sander......then glued to the rimsetThe inside of the arm bevel block is then shaped once attached to the rimset
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Oska Burman Guitars
Luthier / Guitar Maker
Posts: 75
My main instrument is: Steel String Acoustic Guitar
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Post by Oska Burman Guitars on Mar 3, 2024 21:55:36 GMT
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Post by Vinny on Mar 3, 2024 22:11:01 GMT
Beautiful work.
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Post by colin on Mar 6, 2024 23:02:48 GMT
I do like the aesthetics of the curves on the back braces!
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Oska Burman Guitars
Luthier / Guitar Maker
Posts: 75
My main instrument is: Steel String Acoustic Guitar
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Post by Oska Burman Guitars on Mar 9, 2024 8:47:33 GMT
Beautiful work. Cheers Vinny. I do like the aesthetics of the curves on the back braces! Thanks Colin! My intention is to create organic forms (within the parameters of structure) that will then translate into a pleasant sound.
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Oska Burman Guitars
Luthier / Guitar Maker
Posts: 75
My main instrument is: Steel String Acoustic Guitar
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Post by Oska Burman Guitars on May 4, 2024 10:15:00 GMT
So now with the back braced, the soundboard attached to the rim & voiced, it's time to close the box - an almost ceremonious milestone. It might look mad, but I firstly test fit the all of the spool clamps that you see in the background & place them back on the bench in order of size, so that when I'm gluing the back on, I don't have to waste time adjusting each spool clamp to fit in its desired location. Every second counts when gluing. Once the box is closed, it's time to bind & "purfle" the guitar. I know purfle isn't a word, but I'm not sure that there is a verb for the word purfling! On second thought, maybe purfling is also a verb... This OM is being bound in Tasmanian Blackwood with Boxwood/black purfling lines. Tasmanian Blackwood is the same Genus as Hawaiian Koa - "Acacia" - so makes for a nice congruent design link between rosette & bindings. Snugly fitted brace ends create a great structural & tonal transmission point between the sides & the back (or soundboard) and is very important.This is what we call in the luthiery world "my high tech such & such jig". What this means is that some time in the past you made a jig that was completely fit for purpose (and still is), maybe from some scrap ply you had lying about, looks a bit Frankensteinian & a bit rough around the edges, but you've never got around to making another more "refined" one, because, hey, this one just works fine! So this is my high tech initial arm bevel routing jig. And this is the result of the previous stepThen a bit further down the arm bevel construction line, the best/only way to clamp things down is with pins, nails or scalpel blades. There's no issue using them here, as the material that they're tacked into will be removed in the next steps. Post binding/purfling, pre arm bevel attachmentHaving a break from the binding to get the end graft in. The edges of channel are cleaned up with a chisel before inlaying the floating end graft.After making a template of the arm bevel capping piece with masking tape, it's transferred onto the flat piece of wood & then bent on a hot iron to match the curves of the guitar & bevel itselfAnd glued in place - what a relief! And then the sun comes out in Glasgow, Scotland - which is sometimes a rarity but a most pleasant occurrence. Then all of your hard work has paid off with an incredibly comfortable & aesthetically pleasing arm bevel.
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ocarolan
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Post by ocarolan on May 4, 2024 10:51:49 GMT
Stunning work on that bevel, Oska!
Keith
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brianr2
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Post by brianr2 on May 4, 2024 12:29:01 GMT
Absolutely glorious. Your client should be delighted.
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leoroberts
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Post by leoroberts on May 4, 2024 13:59:25 GMT
Well, now, that all looks beautiful!
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Post by Vinny on May 4, 2024 14:30:15 GMT
I love a good build thread, and this one is excellent. Exquisite work, Oska.
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Oska Burman Guitars
Luthier / Guitar Maker
Posts: 75
My main instrument is: Steel String Acoustic Guitar
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Post by Oska Burman Guitars on May 6, 2024 8:27:38 GMT
Stunning work on that bevel, Oska! Keith Cheers Keith. Yes the arm bevel is a lot if work, but definitely worth it in the end. Absolutely glorious. Your client should be delighted. Wll, now, that all looks beautiful! Thanks Brian & Leo I love a good build thread, and this one is excellent. Exquisite work, Oska. Cheers Vinny. Glad you're enjoying the ride!
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Post by colin on May 6, 2024 14:04:43 GMT
Absolutely glorious. Your client should be delighted. I'm sure I will be!
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ocarolan
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Post by ocarolan on May 6, 2024 14:23:16 GMT
Absolutely glorious. Your client should be delighted. I'm sure I will be! Great news! You do realise that once you get your hands on it we'll be expecting more pics and also recordings....please! Keith
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Post by colin on May 6, 2024 14:46:26 GMT
Great news! You do realise that once you get your hands on it we'll be expecting more pics and also recordings....please! Keith And I will be only too happy to oblige when the time comes. Still a while to go before it'll be ready though.
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