Tool used to cut letters on grave spotted (6)
I believe the answer is:
ripsaw
'tool' is the definition.
(ripsaw is a kind of tool)
'to cut letters on grave spotted' is the wordplay.
I cannot really see how this works, but
'cut' could be 'saw' (sawing is a kind of cutting) and 'saw' is found in the answer.
The remaining letters 'rip' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
'used' acts as a link.
Can you help me to learn more?
(Other definitions for ripsaw that I've seen before include "Cutting tool" , "Coarse wood cutter" , "It cuts along the grain" .)