A lot of skill to fix light (3-4)

I believe the answer is:

arc-lamp

'light' is the definition.
(arc lamp is a kind of light)

'a lot of skill to fix' is the wordplay.
'a lot of' means to remove the last letter (most of the word but not all of it).
'skill' becomes 'art' (I've seen this before).
'to fix' becomes 'clamp' (clamping is a kind of fixing**).
'art' with its final letter taken off is 'ar'.
'ar'+'clamp'='ARC-LAMP'

I've seen this clue in The Times.

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