2.4 Drilling
When using the model for drilling exercises, several factors should be
considered: Despite the Lay-brick filament’s better resistance to
melting from thermal friction than other thermoplastics, minor melting
and agglomeration still occurs during drilling. To avoid this, we
recommend only using sharp-burrs, which cause less melting of the model
than diamond burrs.
Further, suction and irrigation should be avoided as the suction easily
clogs due to the clustering of tiny fragments of plastic. Instead, we
recommend that trainees either turn the model upside down or use
compressed air to remove plastic fragments from the model during
training.