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Here is the custom design I created to thin my violin rib. It is basically a suction MDF box with a groove over it that holds in place the rib. It works over the table of a press drill. I was using a Delta press drill with an extra large platform. I was using a Safe-T-Planer mounted on the drill to thin my ribs. It is very accurate. It does not produce a fine powder like when we are using a belt sander. It is a known that the fine powder coming from hard wood is toxic for the lungs. It is pretty safe to use the Safe-T-Planer. It can be found here: http://www.stewmac.com/Luthier_Tools/Types_of_Tools/Planes/StewMac_Safe-T-Planer.html?utm_source=bing&utm_medium=cpc&utm_campaign=TXT%3A New Products&utm_term=safe t planer&utm_content=Safe-T-Planer The measurements of the box are:Length = 762 mmWidth = 153 mmHeight = 120 mmThe MDF thickness is 16 mm.The width of the groove is 43 mm. I used a router to make that groove being .6 mm deep.The open part for the adaptor suction part is 56 mm wide. I connect to it a Shop-O-Vac vacuum. We start to thin from the middle of the rib in place, then going to one extremity, and we start again into the centre and we complete until finished toward the other extremity. This approach about 80 % of the time usually used with the traditional method using a plane.
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Hi there, I made some varnish a while ago by using a recipe that I found online, to be more specific, it was a pdf file on Thestrad. The link unfortunately doesnt work anymore so linking it here wont help. Anyways, the recipe contains pine resin, linseed oil, and aloe powder. It said the varnish can be thinned with Gum turpentine to the desired consistancy afterwards. My question is, what sort of gum turpentine would be needed for this? If this is anything like linseed oil, there is so much different types which makes it hard to know which would be usable in varnish. Would I need 100% pure gum turpentine? I found 2 examples of gum turpentine on Ebay that can ship to where I live, can someone please tell me if this might work? http://www.ebay.com/itm/Turpentine-Gum-Therapeutic-Grade-100-ml-3-4-oz-Skipidar-All-Natural-/110992150787?pt=LH_DefaultDomain_0&hash=item19d7a5d103#shId http://www.ebay.co.uk/itm/Mylands-Pure-Gum-Turpentine-1-Litre-/190731553366?ssPageName=ADME:X:eRTM:GB:1123 Thank You. If anyone is interested, I still have the PDF saved, so I can provide the full recipe here.
