The hardware shown in Figure 9 is required to
attach the laser cut mounts. It consists of the
• 15 #6-32 x 1" machine screws
• 15 #6-32 hex nuts
• 9 M3-.05 x 30 mm machine screws
• 6 #6 flat washers
• 6 #6 internal tooth lock washers
• 12 M3-.05 x 10 mm socket head screws
• 6 1/4-20 x 3" full thread carriage bolts
• 6 1/4-20 hex nuts
• 6 1/4 split lock washers
• 10 1/4 flat washers
• 12 1/4-20 x 7/8" threaded spacers
The krcnc.com website is offering these parts as
a bundle for those who don't want to source them.
The bundle contains all the hardware needed to
mount the laser cut parts. Please note that many
hardware stores stock all of these components and
they will be cheaper than purchasing my bundle.
SERVO 05.2014 71
The nine M3-. 5 x 30 mm machine screws (Figure 10)
may be a little more difficult to find, so they will be sold
separately on the site. Note that these are included in
We will be using Mach 3 (Figure 11) available from
ArtSoft. While not free, it is software that any serious
CNC machinist should consider. I have used free CNC
control software and can tell you that you get what you
pay for. Mach 3 is available to use for free, but you will
need to purchase a license if you want to run any job
that requires more than 500 commands. This means
you can install and configure the free version, but if you
want to create a part, you will need to purchase a
license. This will cost you $175.
Configuration files will be provided for Mach 3, as
well as a work flow on using Mach 3 to create a part.
Please note that you will be able to use the Mach 3
software on your other CNC devices. It is what I use on
my KRMx01, KRMx02, and KRmc01 machines. If you
don't have any other CNC machines, don't worry. The
MF70 CNC will be just a stepping stone to many others.
You will need software to create your drawing files.
There are many CAD packages available, and depending on
if you are doing 2.5D or full 3D operations, you will need to
choose software that suits your skill level and budget.
For 2.5D operations, Corel Draw CAD software is
recommended. For full 3D design, Autodesk Inventor
gets the nod.
Once your design is complete, you will need CAM
software. For 2.5D, I recommend Cut2D and Vcarve Pro.
For 3D work, I recommend Cut3D — all by Vectric.