In some instances an automated laboratory system must account for treatment of the sample before it is sent to the laboratory. A steel sample, for example, taken from the mold, generally contains a 'pin' where the liquid material entered the sample body. Proper, safe and secure removal of the pin is of vital importance for automated treatment. To remove the pin before the sample is entered into the automated system, a number of methods have been developed - from shearing to cutting. The best method currently available is by using a cut-off wheel. This device, that only makes use of compressed air, is commercially available and fully automatic.