Not sure how to properly set up this bit

[landcrush]

Okay, this may not be the right place to post this, if it is not, please feel free to correct me. I've got this bit in my Fusion tool library. As you can see from the picture and the specs, it's tapered to a fine point. It's also flat from the center out, only round on one side.

I just finished using it to cut the inlay you see in the second picture. If you take a closer look at the picture, the inlay is not cut dead center even though it is positioned dead center of the stock in Fusion.

I believe this to be an error on my part when I do the XYZ probe on the CNC controller. If you look at the probe in the third picture, the way the operation works is it probes Z first, then X, then Y. It does this by bumping the bit up against the top, right side, and rear side. Problem is the bit is tapered.

Now, when I enter the diameter of the bit into the XYZ probe parameters for the probing operation, I've been using the tip diameter specification, which is .005. However the diameter of the bit where it contacts the probe is much greater than that, yet still not the full shaft diameter which is .25

Bottom line is I don't know how to set the probe operation for this bit, or which of its numerical specifications to use in the controller, but I'm clearly doing something wrong.

[a.laasW8M6T]

Two options I see here

1. Raise the probing block up AFTER you have set the top height, so you can bring the tool down low enough to touch on the full known .25" diameter
2. Do a little trigonometry to determine the diameter of the tool at the height it will touch the probing block and use this value. Actually you don't even need trig haha you have fusion, just draw a sketch and let the program give you the numbers.

[landcrush]

 "just draw a sketch and let the program give you the numbers" sounds interesting except I have no idea what you mean or how to go about doing that.

[a.laasW8M6T · Accepted solution]

ok no problems

I have made a screencast to show you what I'm talking about:

https://autode.sk/3gF3gyA 

[landcrush · Accepted solution]

Okay, I totally get that. Brilliant! and thank you.