Do i need heat sink for the driver boards?

Hello and 1. question:
I ordered Vertex 3D Printer online. But they suggest 4x Heat Sink for K8400 because of Heat issues. Please give an advice if i need those for proper use of this printer.
kind regards

Heat sinks are not absolutely necessary but if you’re planning to do very long prints during the summer they can do no harm.

Hello @raby ,
thank you for your quick answer. I will add a heat sink to Driver PCB.