Possible Clues:

• One who makes small metal objects including bits and spurs
• Reclusive type with lip filling in for new metal worker
• Peter --, Scottish forward nicknamed 'Hot Shot'
• See old poet? He would have made a bit once!
• Craftsperson's fruit keeps men right
• One who makes a bit
• Endlessly vulgar versifier, one who makes a bit!
• He regularly makes a bit
• 'Among the most noisome of the --s and dens of London' (Oliver Twist)