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kjb Super Member
Joined: 06 Feb 2013 Posts: 385
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Posted: Thu Mar 14, 2013 5:05 pm Post subject: working flamed maple |
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| when working with it it tends to have rolling hills on the harder flamed part, when scraping is there a technique that help prevent that. I am now just going 90 degrees to the hump to bring it down then with for finish . thanks |
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kubasa Member
Joined: 13 Sep 2007 Posts: 212
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Posted: Thu Mar 14, 2013 8:46 pm Post subject: |
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I'm thinking outloud here so this isn't necessarily advice. -- I don't know that I necessarily angle at 90 degrees when I'm trying to even out the hills and valleys. I think I do it at around 45 degrees.
Sometime ago, I think I remember Michael posting a photo of an older instrument with these hills and valleys on it. I have to wonder how common these waves were on older instruments.
James |
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TimRobinson Junior Member
Joined: 02 Jul 2009 Posts: 4 Location: Sydney, Australia
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Posted: Thu Mar 14, 2013 8:49 pm Post subject: |
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| kubasa wrote: | Sometime ago, I think I remember Michael posting a photo of an older instrument with these hills and valleys on it. I have to wonder how common these waves were on older instruments.
James |
FWIW I have a Georg Leeb from 1785 with a nicely flamed one piece back. The undulations are quite distinct. I have often wondered if they increased with age.
Tim |
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actonern Super Member
Joined: 15 Aug 2007 Posts: 444
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Posted: Thu Mar 14, 2013 9:39 pm Post subject: |
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For me, working in angled sunlight is my best friend in this situation.
The sun throws such hard shadows that you can see the smallest undulation in stark relief. Then work the scrapers so that the hills are clipped off and the plate flat.
But I also think flat plates with a vigorous curl will re-introduce wavyness over time, particularly moving back and forth through humidity cycles. |
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Janito Member
Joined: 08 Oct 2007 Posts: 114 Location: USA
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Posted: Thu Mar 14, 2013 10:02 pm Post subject: |
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At the 2010 (?) VSA, there was a fantastic Burgess viola on display - amazing varnish on a super rippled back.
Embrace the ripple. |
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kjb Super Member
Joined: 06 Feb 2013 Posts: 385
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Posted: Fri Mar 15, 2013 8:19 am Post subject: |
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| I was wondering if it enhanced the 3d effect |
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actonern Super Member
Joined: 15 Aug 2007 Posts: 444
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Michael Darnton Moderator
Joined: 23 Mar 2007 Posts: 1347 Location: Chicago
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Posted: Fri Mar 15, 2013 11:53 am Post subject: |
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A lot of makers work hard to get that ripple. The easy way is wet the wood, then scrape with your scraper very vertical and in line with the curls so that it falls into them. Once you have a good crude ripple going you can go back and carefully smooth it. _________________ new blog at my site! http://darntonviolins.com/blog
my work sites: http://darntonviolins.com and http://darntonhersh.com |
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kjb Super Member
Joined: 06 Feb 2013 Posts: 385
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Posted: Fri Mar 15, 2013 4:23 pm Post subject: |
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| ok I won't worry about getting rid of it. thanks |
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