I got a 5 pc set of sub miniature taps and die plate set from e bay seller FINDINGKING . They are metric but the smallest is .6 mm . set cost was less than $20 usd Richard
Thanks guys. Planning on Micro HOSC oscillator. All ready have Tiny and 1/2 scale Tiny (Elmers). I will change a coulpe os sizes to suit my BA taps and dies. Geoff