tool paths. Here (Figure 13), I select the tool paths that I
have created and hit the Save Tool Paths button. Since this
is the bottom domino, I call it “Bottom Pocket.txt.” Later,
when I actually create the parts, I will load this file.
It is important to note that the Save Tool Path form
also lets you select the post processor you will be using.
This is because the base language that the CNC machines
use is called G-code. Unfortunately, there are nuances and
limitations in each machine that pretty much makes a G-code file for one machine incompatible with another. In the
case of the MF70 CNC, I will be using the Mach3 post
The top domino is done just like the bottom domino.
The only difference is that I choose the inner box as the
interior pocket. I also create a second pocket that extends
from the outer box to the edge of the domino. This new
pocket will only be .05” deep. It will form the lip that will fit
into the bottom domino. Once the paths are created, I save
the paths to a file called “Top Pockets.txt” as shown in
I took an idea, created a 2D drawing file, and from that
created a set of tool paths that will be used to tell the CNC
machine how to cut the parts. While this may seem
oversimplified, it is the basic process I use to make parts for
various projects. Just keep in mind that some of those
projects may include hundreds of parts.
Next time, I will take you through the actual part
If you want more information on my KRMx02, KRmc01,
and/or KRmf70 CNC books, you can find them at
I also have a free download for an early CNC router
book that I wrote. You can download it at
If you have any questions, you can post them in the
MF70 conversion forum located at
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