G'day Myrtle's cook,

personally I've no time for 'inferior' tools ... for careful precision work. A good 'jeweller's screwdriver' (selected from your good set of different-sized same) ... a steady hand and a keen eye ... and carful attention to what you are doing .. and what you don't want to happen (damage, etcetera).

I had the job of sorting out the complaints of several of my concertinas that had been left unplayed far too long, recently.

Everything opened ... inspected ... rectified as necessary ... and correctly back together ... with one good example of the right tool for the job. You can't talk the bits back into shape / place / condition - and nobody somewhere else can either!

Regard(les)s,

Bob