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Post by martinrowe on Aug 3, 2020 12:05:55 GMT
Over the last couple of years I've been doing a fair amount of woodworking: I've wanted to do this for a long time, but, in the past, I let work get in the way. I'm trying to trace an article by the classical luthier Kevin Aram that contains a full description of applying the oil finish he uses on his instruments. In the short description I've read (a couple of paragraphs) there is no detailed description of how to apply it - apart from a comment where he describes it as hardly applying any oil at all. The comments are very brief and hardly a description: he says he discovered it because he was fed up with the amount of work involved when applying a french polish finish. I was/am intrigued by his comments. The only place I can find that has, I think, a full description of how to apply the finish is in an article he wrote for an American Luthiers Journal/Magazine. To get it would involve taking out a subscription to the journal, I think. Has anyone come across the article I'm talking about, and if you've read it, did you have to subscribe to get it?
Thanks for reading, Martin
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Post by lars on Aug 3, 2020 19:23:35 GMT
I too have searched for the Kevin Aram article without finding it, but I found another description that I think is very similar to Aram's a while ago. It was called "Well Oiled With Adamson", written by luthier Stewart Adamson and originally published in Woodworker -92. I found it as a downloadable pdf. Unfortunately I can't find the link anymore, but I can send you a copy if you pm me your mail adress. Anyway here is a short summary of Adamson's article: The most important factor isn't the oil, but the preparations with Micromesh pads. In the first step you sand the wood the normal way with abrasives up to 320 grit. But it's not really the normal way. First of all he uses small pieces of abrasive and uses a Staedtler eraser as a sanding block. He uses gentle and long strokes from one end to the other - no short 'back and forth' strokes. When going from one grade to the next he is careful to clean the wood to remove 'coarse grit' from the previous grade. In the second step he does the same, but with Micromesh pads. Long, gentle strokes with little pressure and cleaning the wood between the grades. When you've done all the way up to 12 000 grit the wood is polished. In the third step he applies the oil. He recommends Tru-oil but also mentions Antique oil and Teak oil as examples. He applies the oil in a thin layer with a cotton cloth - no more than a square foot at the time - and then immediately wipe off the excess oil with a dry cloth and continue repeating the apply/wipe off, one square foot at the time. He lets the oil dry for 24 hours, does a gentle "rub down" with Scotch Brite ultra fine grade or steel wool 0000. No pressure must be applied when doing this. Cleans the surface well before applying the next layer. He recommends 6 layers for non-porous woods and 8 layers for porous woods like spruce. Then he lets the oil harden for about a week and as a final step he polishes it. First with Scotch Brite polishing type T or 0000 steel wool. Then he uses the 6000, 8000 and 12000 grit Micromesh pads and finally he applies a thin coat of lemon oil.
Once again - I can't promise this is the method that Aram described in his article, but I'm pretty sure it's similar.
/Lars
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francis
C.O.G.
Posts: 2,483
My main instrument is: Whatever I'm building...
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Post by francis on Aug 5, 2020 9:20:25 GMT
martinrowe Martin, The article is in The Quarterly Journal of The Guild of Ammerican Luthiers, Issue 127/Fall 2016. Just the job I thought when going to oil finish a recent parlour. It caused me more pain than I care to mention. I think the editing of the article has left bits out (like sealing the wood to start with!).
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Post by lars on Aug 5, 2020 15:55:16 GMT
martinrowe Martin, The article is in The Quarterly Journal of The Guild of Ammerican Luthiers, Issue 127/Fall 2016. Just the job I thought when going to oil finish a recent parlour. It caused me more pain than I care to mention. I think the editing of the article has left bits out (like sealing the wood to start with!). Francis, how does the method described in Aram’s article compare to what I describe from the Adamson article? Is it the same or at least similar?
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garynava
Luthier / Guitar Maker
Posts: 460
My main instrument is: Stanley No.5
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Post by garynava on Aug 5, 2020 16:14:36 GMT
If you use Tru-oil, it's a good idea to test it on an off-cut first. You'll find that it won't dry on some rosewoods. Then again, being designed for gun-stocks, it was probably only ever intended for the likes of walnut. Cheers Gary
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colins
Luthier / Guitar Maker
Posts: 2,397
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Post by colins on Aug 5, 2020 16:40:31 GMT
I have spoken to Kevin on a number of occasions to discuss oil finishing, I too use Liberon Finishing oil but with a slightly different application regime. Counting up I've finished more than 80 guitars using my method, which seems to work for me including on rosewoods. As with most finishing methods it is important to use a sanding sealer layer, rather than just starting out with the oil, after egg white pore filling, including a plain egg white sizing coat on the top wood, I always use a couple of wash coats of shellac to seal the wood, being especially careful to ensure a good seal on any rosewoods particularly on the black streaking. BRW finished with Liberon. Anyway, I have arranged for a phone call with Martin so that I can go over my method and answer any of his questions.
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Post by lars on Aug 5, 2020 18:17:01 GMT
I have spoken to Kevin on a number of occasions to discuss oil finishing, I too use Liberon Finishing oil but with a slightly different application regime. Counting up I've finished more than 80 guitars using my method, which seems to work for me including on rosewoods. As with most finishing methods it is important to use a sanding sealer layer, rather than just starting out with the oil, after egg white pore filling, including a plain egg white sizing coat on the top wood, I always use a couple of wash coats of shellac to seal the wood, being especially careful to ensure a good seal on any rosewoods particularly on the black streaking. BRW finished with Liberon. Anyway, I have arranged for a phone call with Martin so that I can go over my method and answer any of his questions. Beautiful finish - far better than anything I’ve achieved so far...
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francis
C.O.G.
Posts: 2,483
My main instrument is: Whatever I'm building...
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Post by francis on Aug 5, 2020 21:36:41 GMT
martinrowe Martin, The article is in The Quarterly Journal of The Guild of Ammerican Luthiers, Issue 127/Fall 2016. Just the job I thought when going to oil finish a recent parlour. It caused me more pain than I care to mention. I think the editing of the article has left bits out (like sealing the wood to start with!). Francis, how does the method described in Aram’s article compare to what I describe from the Adamson article? Is it the same or at least similar? lars - I've never read Adamson's article so can't really comment - sorry Lars
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