Holes in many soft or tacky, caked materials can be satisfactorily made by merely pushing or reaming the holes.
If the material gets harder and thicker, well designed drilling equipments are necessary in order to produce the insertion holes for the ATD-Tubes.
Drilling by Hand, pneumatic or electric, or using special designed Drill Rigs: with the ATD-Drilling Equipments accurate bore holes can be produced in short time even under extreme conditions.
Special drill rods as well as special designed heat resistant drill bits, both suited regarding their caliber to the diameter of the ATD-Tubes, are available in combination the ATD-System.