Word of advice learnt from buying a cheapie Clarke wall chaser at Machine Mart (£117). It's similar to other budget models around. It does a good job, although replacement blades only available from a few suppliers. No complaints with it's ability to cut a chase. Loads of power at 1450W. I've done all the chasing in two or three rewires on the original blades and still going! But the vacuum extract port is directly in line under the blade so debris occasionally collects on the grill, blocking the airflow. This I think could have been designed better. Only noticed it really happening on crumbly old lime rendered walls.
