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Lab talk, the good, the bad, and the ugly
Dental-CAM
Grinders keep burning emax and breaking tools
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<blockquote data-quote="deadhead" data-source="post: 302084" data-attributes="member: 19095"><p>what kind of restoration are you trying to mill when the tool burns out, and what mill are you using. We have had this issue before with our Motion2(1st generation) mill, and it ended up being a mixture of dirty coolant, and the way the restoration was nested. When nesting make sure your connector is near bottom of restoration and where the connector meets the restoration make sure it doesnt form a 90 degree angle. Also make sure that the unit you are milling is all the way to the back of the block. If you put towards middle or front tool will get too hot due to all the material it has to mill away(unless you have the Motion2 DNA with the carving mode then it really shouldnt matter where the restoration is as far as placement but connector still cant meet unit at 90 degree or else the tool will jam in that spot and get heated up due to lack of coolant being able to hit the tool and restoration at the same time. Also we noticed if we were trying to mill a unit that was a crown going over an MDI implant or even a screw retained crown, the 1st generation Motion2 cant mill these due to the fact that there is only 2 nozzles that the coolant comes out of to cool the tool and work piece, which isnt enough when milling these kind of units because the coolant cant get into the hole when it mills to keep things cool which in turn will burn the unit and bust the tool, but with the Motion2 DNA this mill has 3 nozzles and a beefer spindle which can handle these types of units. here r 2 pics showing correct placement and incorrect placement. hope this helps [ATTACH=full]32551[/ATTACH]</p><p>correct placement</p><p></p><p></p><p></p><p>[ATTACH=full]32552[/ATTACH]</p><p>not correct placement</p></blockquote><p></p>
[QUOTE="deadhead, post: 302084, member: 19095"] what kind of restoration are you trying to mill when the tool burns out, and what mill are you using. We have had this issue before with our Motion2(1st generation) mill, and it ended up being a mixture of dirty coolant, and the way the restoration was nested. When nesting make sure your connector is near bottom of restoration and where the connector meets the restoration make sure it doesnt form a 90 degree angle. Also make sure that the unit you are milling is all the way to the back of the block. If you put towards middle or front tool will get too hot due to all the material it has to mill away(unless you have the Motion2 DNA with the carving mode then it really shouldnt matter where the restoration is as far as placement but connector still cant meet unit at 90 degree or else the tool will jam in that spot and get heated up due to lack of coolant being able to hit the tool and restoration at the same time. Also we noticed if we were trying to mill a unit that was a crown going over an MDI implant or even a screw retained crown, the 1st generation Motion2 cant mill these due to the fact that there is only 2 nozzles that the coolant comes out of to cool the tool and work piece, which isnt enough when milling these kind of units because the coolant cant get into the hole when it mills to keep things cool which in turn will burn the unit and bust the tool, but with the Motion2 DNA this mill has 3 nozzles and a beefer spindle which can handle these types of units. here r 2 pics showing correct placement and incorrect placement. hope this helps [ATTACH type="full" alt="32551"]32551[/ATTACH] correct placement [ATTACH type="full" alt="32552"]32552[/ATTACH] not correct placement [/QUOTE]
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Lab talk, the good, the bad, and the ugly
Dental-CAM
Grinders keep burning emax and breaking tools
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