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Lab talk, the good, the bad, and the ugly
Dental-CAD
Stress Breakers, Direction Changer ETc
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<blockquote data-quote="JMN" data-source="post: 264307" data-attributes="member: 8469"><p>Those will be tricky to mill since most designs (I've seen anyway) have squared or sharp angles. Mills don't have the nifty machinst tools to cut square holes and the like with a rotating tool. (yes, they really exist) If the design has corners, round tools heads cannot cut them without overcutting into the corners.</p><p> And what you end up with is exactly what you desribe, incomplete milling as the round head cannot reach the rest of the area. So you get something like this instead:</p><p></p><p><img src="http://mathworld.wolfram.com/images/eps-gif/RoundedRectangle_1000.gif" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>You'll need a female and male design that is rounded at every turn/direction change of the proposed output. Intentionally designed so that the radii of the angles of the inside of the turns are greater than the radius of your smallest burr that is applicable to the stock you are milling. Even with rounded corners, they can still be too small for a .6mm burr if that's all you have for that material.</p><p></p><p>And that's as much help as I can be here. Real curious as to the answer as well if you are not designing the component yourself.</p></blockquote><p></p>
[QUOTE="JMN, post: 264307, member: 8469"] Those will be tricky to mill since most designs (I've seen anyway) have squared or sharp angles. Mills don't have the nifty machinst tools to cut square holes and the like with a rotating tool. (yes, they really exist) If the design has corners, round tools heads cannot cut them without overcutting into the corners. And what you end up with is exactly what you desribe, incomplete milling as the round head cannot reach the rest of the area. So you get something like this instead: [IMG]http://mathworld.wolfram.com/images/eps-gif/RoundedRectangle_1000.gif[/IMG] You'll need a female and male design that is rounded at every turn/direction change of the proposed output. Intentionally designed so that the radii of the angles of the inside of the turns are greater than the radius of your smallest burr that is applicable to the stock you are milling. Even with rounded corners, they can still be too small for a .6mm burr if that's all you have for that material. And that's as much help as I can be here. Real curious as to the answer as well if you are not designing the component yourself. [/QUOTE]
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Lab talk, the good, the bad, and the ugly
Dental-CAD
Stress Breakers, Direction Changer ETc
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