Duct processing professional tool selection:

In accordance with the "special tool manual" installation and debugging tool.

The blade should be clean and sharp; the tool (especially the bottom) should be clean, free of glue and other dirt.

  The  blade should be in place in depth, 90 º pole of the blade length should  be cut through the plate without cutting the lower layer of aluminum  foil prevail; left and right 45 º knife and straight knife should be cut  through the plate and the lower foil.

  45º knife and 90º knife, the angle should be accurate without bias.

The  application force is uniform and the speed is smooth, and the bottom of  the tool does not hurt the upper aluminum foil in contact with it.

When  using the tool, should be lightly put; after the side should be placed  side, is strictly prohibited bottom down to prevent damage to the blade.