I just made a small 18 x 24 water pan to fit inside my regular slats. I made this so I could cut small parts out with the water just touching the material. Normally the water is below my slats ( bad initial design by me ). I cut some parts yesterday in the small water pan and the slag was about 4 times as much as normal. I played with the current setting and it remained the same. Could something else be causing this problem? or is it normal for more slag when the water touches the material?