Spark Plug Challenge

Alligning, fixating and cutting an elongated component including different materials is a challenge. This requires a precise cutting setup using well chosen equipment and cut off wheel in order to end up with the desired sample in two halves and a minimum of mechanical damage.


A reproducible method for cutting a spark plug was developed consisting of:

  • Clamping and positioning the spark plug using a vertical clamping tool and a dedicated vise. 
  • Precision cutting with Secotom-50 to section the component exactly in the middle.
  • A metal bonded diamond cut off wheel with 0,6 mm thickness was used to acheive a minimum of mechanical damage and a very precise cut
  • Rotational speed of 2200 rpm and feed speed of 0,04 mm/s was used. Direct cut in the 85 mm length of the spark plug was used starting form the connector end towards the electrode end.

Tell us who you are and you may download a materialographic solution report of one of our many method solutions. Please don’t hesitate to contact us if you have a specific problem that you would like us to help you with