3Shape adding or smoothing

[MrNeverFixit]

Hi All,

Does it matter, when adding and smoothing extra materials are added on the margins using 3Shape. Please see attach picture.
As the margins are protected...can it cause chipping on the mill side if the margins are that blur/not clear.

Just want to hear your opinion, I'm not a designer but i would like to know your thoughts and answer from your
experience point of view.

thank you very much, have a good weekend.

 

[KingGhidorah]

To directly answer your question, the spots that you have circled that are “blurry” is because there was some extra material added to it, so the spots that are blurry should not cause any chipping, if anything, those spots would be less likely to chip as there is extra material there.

How I do my margins depends on what your first number is for the connection to margin line setting. If it’s at .2, really your mill shouldn’t have too much of an issue with it at all, it would be good to pay attention to the thin areas though, doing something like setting the minimum thickness color setting at .7 or .8, and adding a little bit of material wherever you see the colors traveling up higher on the crown should completely prevent chipping, at least from the design side (if you have a sucky mill it’s probably gonna chip regardless) If you’re setting that first number lower, like at .1, then it requires a bit more attention to detail to make sure it’s not going to chip. Obviously if you have a knife edge margin you probably don’t want to set it to .1. But if you got a clean margin prep, and you pay attention to the minimum thickness colors and add as needed, you can pretty safely get away with a .1 connection to margin line. It all depends on your mill though, and will probably require some communication between your designers and the person milling to get it locked in how you like it.

 

[AaronW12321]

I've never had a unit chip because the margin had MORE material on it. I would check burs, clean the mill, and calibrate. If you're still seeing chips and cant get the mill to mill any cleaner, just increase the margin line offset and extension offset by like .03 and try again.