Quick Way to Mouse Ear?

[ssashton]

Hi Everyone!

I find myself spending a lot of time adding 'mouse ears' to internal pockets that need to receive right angled parts.

My current method (for example) is to draw a square and then add circles slightly offset from the corners. The centre point of those circles gets drilled. I use the dimension number (like D123) so that I can at least update things easily. I do not model the mouse ear, just add a drill operation from the sketch.

There must surely be a faster way to do this?

I do not want to drill exactly on the corner because this tends not to clear the area well enough. So I set the drill slightly inside the corner. In this case the same 3.175mm end-mill that will cut the pcoet does the drill with a 0.7mm inside offset.

Tip and hints appreciated!

Simon

[ssashton]

A second example where it is not used on a square, but just an internal right angle.

[HughesTooling · Accepted solution]

This bogbone add in might help.

Edit and another add in on GitHub.

[ssashton]

Hey that's awesome! I knew there must be a better way.