Laguna Tools Smartshop Composite Fabricator 16 Manual page 27

Automatic Tool Contact Button or Tool Touch Off-
Area for Tool/Cutter to Touch to
establish height adjustment.
Automatic Tool Contact Button or Tool Touch-Off (TTO)
The machine is provided with an Automatic Tool Contact Button
that, when used, will tell the machine the exact dimension of
the tip of the tool in relation to the tool.
Automatic "Z" Origin Point (Tool Touch-Off). The machine is provided with an automatic tool height adjustment. To activate the
automatic tool height adjustment, access the tools screen and press "Execute Tool Touch Off" button. This will cause the machine
to move to the TTO position, then move down slowly. Once the cutter touches the contact button, electrical contact is made, and
the cutter will move up away from the contact button. The machine now knows the height of the cutter.