Looks like I'll have to be resourceful if we want to weld the gears
We've got a TIG welder, a table and a 90 degree jig.
Thanks anyways for the information, we may just try and experiment with welding gears/sprokets, see how it turns out.
I've been trying to stay away from that 1/2 in shaft, the bearings start to take up a lot of room and the shaft becomes very heavy very quickly. (too bad you can't lighten the drill rod)
Thanks again for all the replies, and good luck with all your teams next year.