When using my Lee Auto Disc, especially with fine powders, I notice that some of the powder spills out of the top of the metering hole and onto the bench and press. So, I decided to make a spill sheild. I traced the hopper onto a piece of clear plastic cut from a soda bottle and cut it out with extra stock to overhang the charge bar. I then assembled it into the measure, between the hopper and metal base, and trimmed off the excess and marked the hopper's exit hole. Tried the setup out loading about 225 9mm's last night and there was no spillage with Win 231. About 5 granules were found to be stuck between the hopper and the shield. I realize I can't be the first one to think this up, but I thought I would throw it out there for anyone else having this problem.