CNC Keyhole CAM with Fusion 360

[@pdxcnc]

Check out the post for more images and the Fusion model download - pdxc.co/keyholes-post

[@Silv3rDragon]

This seems to be a rather rare operation in machining and hard to find anything on how to do it. I was stuck for a while till I found this. Thanks for the video.

[@chrismolloy131]

I make a a drilling template out of a strip of 1/4” of MDF the width of the work to be mounted with holes at the mounting location. Makes placing matching screw mounts a snap!

[@pdxcnc]

Good idea 👍

[@BlaiseBarrette]

The way I do it, I do the bore operation with a tool of the same or approximate diameter as the minor diameter. I do the bore like you did and then with the same tool, I do the trace using the same center to center line. Also I do the trace operation one mm deeper. And then I come with the key hole cutter and do the trace op just like you did. Makes it much easier on the keyhole cutter. The sine is awesome!!!

[@pdxcnc]

Nice! Thank you 👍

[@rideforlife247]

with a bottom cutting key hole bit you should be able to go straight down, over, back and up and out all with one bit one operation

[@pdxcnc]

sure, in theory. you'll lose lots of keyhole tools though depending on the material

[@MrMichaelkc]

very cool tutorial, Thank you so much for taking the time to explain how to model it and the toolpaths. Thanks!

[@pdxcnc]

Glad you enjoyed it!

[@geekoid183]

As english is not my native language, I had a hard time understanding what a keyhole is, based on the thumbnail. It's a shame because it seems like you put a good amount of time making it ! Maybe it's just me, but I think it should be more self explanatory. Anyway, helpful video and what a nice sign !

[@pdxcnc]

Oh, dang. I was hoping it wouldn't be confusing but they are partially hidden features. A keyhole cutter can plunge into stock and cut a smaller surface section than a bottom section. Check out the blog post there's a couple more images - pdxc.co/keyholes-post