ER16 Collet Chuck for Unimat M12X1 Spindle

[NeiljohnUK]

Nice job, whilst I didn't do the whole thing, it did inspire me to buy a ready made er16 collet conversion chuck for an 8mm motor spindle then bore out and thread the internal to match my Emco Compact 5's mill head (14x1mm). The headstock spindle on the 5 is a bolt on flange design, so the next job is to make an adaptor and thread that to suit, though I may go for a much larger series, the 5 factory collet size was er25, so either 32 or even 40!