Rules on building after bag day?

[eedoga]

You have a withholding allowance of 30 pounds. You can keep 30 pounds of prefabricated non COTS items which you can then use at the competition. Some teams keep their electronics for a practice robot, other teams keep a subsystem which needs more work to be reliable. Be very careful though. You don't want to go over the weight limit, and you don't want to spend your first day building your robot instead of practicing with it.

Good luck.