Touch start to begin recording the outline of the block.

There are two ways to record a block:

<b>Sampling mode
Choose this option to input points along the block outline.  
These points will be joined by straight lines to create the block.

<b>Record mode
Choose this option to record the outline as you move the machine 
continuously around the shape of the block you want to create.

You can toggle between these modes as the shape of the traced
block changes between straight and more dense segments.

