castellated slots in altium

[Psi]

Is there a better way to do a castellated slot in Altium15 than this?

(just a normal plated slot that overhands pcb route edge)

[thm_w]

Can't see how else you would do it.

Is that a real image of the board or just a demo? The right side might be a bit weak.

[tszaboo]

I think you can designate a mechanical layer as route, then it will use that as a milling. Of course don't forget to tell this to the board house. Maybe that renders better, but I doubt it, probably the 3d will always look wrong.

[Psi]

Can't see how else you would do it.

Is that a real image of the board or just a demo? The right side might be a bit weak.

It's a real PCB, but the slot is 1mm wide, so its a bit bigger than it looks.
There is 2.8mm of PCB on the right side.

[Feynman]

I don't know if there is a better way in Altium. But it is industry standard to just have castellated holes hanging over the pcb outline in your production data. You'll sure have to point this out to your fabricator in some way, e. g. in the fabrication drawing.

However, a 1 mm wide slot could be less than some fabricators are willing to do, since you need a very small router for this. A 2 mm diameter router is standard in most pcb shops. Anything that requires are smaller router will probably cost more (depends on the shop). Maybe you should consider to use a hole instead of a slot, if that's possible in your application, of course (if that is the only plated slot on the pcb). Drilling a 1 mm hole is certainly cheaper than routing a 1 mm slot.

[Psi]

I think 1mm slot are supported most places now, with no extra cost.
I've never had anyone say they couldn't do a 1mm slot or charge more for it over a 2mm slot.

PCBway can do 1mm slots just fine. 

It's panel route paths where some places tend to charge you more for 1mm, because it burns through 1mm router bits really fast and requires operators to stop the machine to change them often.