Notching screen frame at the bottom edge of the screen frame has a slot on the Groove can use round saw to dig, you can also use a special dedicated chamfer tool or wood chisels to dig.

• 不抬槽网框在网框的底外上有一个槽，该槽可以搁置不方形的锯来挖，也可以用出格的兼用挖槽东西或木凿子来挖。