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| Fixturing http://www-.luthiersforum.com/forum/viewtopic.php?f=10102&t=6720 |
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| Author: | Bob Garrish [ Tue May 16, 2006 2:21 pm ] |
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For those of you using reasonably 'juicy' CNC machines (feed rates >=300 IPM), what are your preferred fixturing methods? The question comes in special reference to instruments where both sides are cut. For example, a carve-top that is hollowed out on the inside or a one-piece body with both the top and back carved. This would also reference necks, I suppose. The issue I worry about (since it might make a significant difference in how much money I need to drop on a CNC) is having parts cut on one side and then cutting the second side and having them not 'line up', thus ruining the piece. I haven't really found anything good on fixturing in my travels on the web. So far my best idea has been to have the machine cut out aluminum vacuum plates that I could index in the T-slots. This seems a bit heavy-duty, so maybe I'm missing a simpler (and cheaper) solution? |
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| Author: | Rand Kennedy [ Thu May 18, 2006 3:23 am ] |
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A couple of dowels (or equiv) along your axis of rotation. Mechanical clamping, double sided tape, and for production vacuum all work. Clamping and tape are cheap and easy to implement & evolve. |
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