I used this to rake out old lime mortar on an internal chimney breast prior to pointing, where a power tool would have been too messy. Once I used pliers to tighten the screw holding the raking nail, it worked really well taking the mortar out cleanly and easily without all the dust of abrasive discs.

I needed this to remove some old, substandard mortar on the brickwork of a chimney stack, ready for re-pointing. It did the job, so I’d recommend. Gotta have the knack! It’s all in the hand movements! Then works fine. Tighten the nail with pliers though, to keep it firmly in place.