Ian_C
Western Thunderer
Thinking of having a go at telescopic split axles in 7mm, so 3/16" diameter. Been looking at taper pins to fix gauge and quartering. There seem to be 'engineering' taper pins to DIN and BS that go down to about 1/16" in size, and you can buy specific taper reamers to match. Below that in size there are hordes of horological taper pins. They don't seem to have any info on taper and I've found no matching reamers. So...are there standards for horological taper pins? How do clock folk make the matching tapered holes?