Cutting dichro glass

I had a trouble to cut sheets of glass for long time. Now I have mastered with right equipment.

1. Set the glass Dichro colour face down and width including cutter tip width. Push the glass from left.
2. Push and pull the cutter straight from top at once. Do not go back or do twice.
3. When I store the oil cutter, I have to close the screw, put the tip in oily cloth and keep vertical.
4. When I use the cutter, loose the screw. Add more the singer oil as needed.