Instructions

x-3.7 z-.01 –I think I dented their runway

g03 x-3.7 y-.9 i0 j-.2 –Let’s get out of here before they remember me for that

lousy landing

g01 g90 x-1 f25 –A nice fast taxi home

g03 x-.5 y-.4 i0 j.5 f15

g01 y.5

g03 x-1 y1 i-.5 j0

g40 g90 g00 x-1 y1 z0 –Home at last. I wonder if they’ll remember my lousy

landing more than our win

NOTE: For those who have purchased the complete CNC system with computer,

this program has been added to the “g-code” folder as “TheGreatRace.ngc” so

that you can open it and test run it without having to retype everything.

Your homework assignment is to figure out this program that I just spent more time on

than I care to admit. There isn’t anything new in it, and you have to understand all the

code used. It may be a little “far out” but it is easy to follow if you know about aircraft.

Your next assignment is to see if you can lower my time from leaving the starting line

until the race is over time is displayed. After lap 2 is completed, the turn-in points are the

only thing you have to work with, and you can’t change the feed-speed or the feed

override on the panel.

My time was an astounding 1 min 42.7 sec. Your job—lower it.

Test two

Up until now all you have done is copy my examples into your computer, and you’re

probably thinking this CNC stuff really isn’t that hard after all. It’s time to bust your

bubble before you get a big head and become a pain.

Figure 7