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<blockquote data-quote="PeterT" data-source="post: 13175" data-attributes="member: 22"><p>Back to CNC milling, this picture came up on another forum I frequent & does a better job of explaining a 'mostly complete' 2-sided 3D profile milling job. These are very accurate micro propeller blades so very complex constantly changing foil geometry. They mill the profile from slab stock flip & do the same on the other side. The excess stock is what is giving support. The trick is milling through selectively leaving small webs which are then cut leaving relatively simple hand work finishing. But I suspect using even conservative $/hr shop rate, programming etc. this wouldn't come cheap.</p></blockquote><p></p>
[QUOTE="PeterT, post: 13175, member: 22"] Back to CNC milling, this picture came up on another forum I frequent & does a better job of explaining a 'mostly complete' 2-sided 3D profile milling job. These are very accurate micro propeller blades so very complex constantly changing foil geometry. They mill the profile from slab stock flip & do the same on the other side. The excess stock is what is giving support. The trick is milling through selectively leaving small webs which are then cut leaving relatively simple hand work finishing. But I suspect using even conservative $/hr shop rate, programming etc. this wouldn't come cheap. [/QUOTE]
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