I have a Carba-tec CTX 330 "spiral" segmented head thicknesser. As this was my first thicknesser I had no idea how to change the cutter heads when the time came, and the manual was no help as it only refers to the standard linear cutters of the non-spiral head version. However, I eventually figured it out and I created this small illustrated document to remind me if I need to change them again in the distant future. I'll post it here as a PDF in case it is of use to anyone else.Changing the cutters on a Carba-tec CTX 330 thicknesser.pdf