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Hey. So, hope this doesn't cause too much trouble for you, but you will have to make some adjustments to your USB port. The fillet you have on the vertical edges of your usb cutout are impossible to machine the way you have them modeled. The tools the machinists will use to create the fillet look like
(Attachment Link) These end mils are circular, so you effectively end up with a rotating cutting area that creates your fillet. When a machinist goes to make the radius on your part as it is drawn, he/she will not be able to make it end in a sharp corner like you have shown. When the end mill is at either end of the line, it will begin to cut into the edge perpendicular to the direction it is travelling. The way I see it, you have a few options. I highly recommend the first one.
Option 1, Continuous Fillet- Add a fillet to the horizontal edges. If you want an edge that has a fillet all the way around, you'll have to add a fillet the the inside corners of the cutout as well.
Option 2, Disappearing Radius - You can keep your design with the vertical fillets, but the beginning and end of the line will not have the fillet. Depending on the diameter of the end mill, you will have some curvature where the end mill begins the cut. I can make some pictures later today if it helps.
Option 3, Chamfer - Chamfer the outside profile of the usb cutout instead filleting. It may reduce the price a bit.
By the way, this applies for all of your vertical-only fillets on the usb cutout.
I'm more than happy to check your design to make sure it can be machined easily. It will help reduce the cost and time talking with the shop. Here's a youtube video that goes over design for manufacturing (DFM) fundamentals.