if you find ur overweight, speed holes may be the answer...
drilling speed holes to reduce weight does make your robot cool looking and if positioned right will make your robot go faster (im still not so sure how effective it is
) but they are a pain in the butt to cut. its not the actual drilling that kills ya its the problem of how many is it going to take, and where can we put these holes so that we can knock off a couple pounds.
if you need any help with this im sure if one of our team members isnt busy we could show ya how do to it properly. (my team has had a lot of experience with this type of thing).
unfortunately youd think wed learn to design things to be lighter in the first place so that we wouldnt have go through all that.