Er... Morse tapers all have slightly different angles. From my thread on the Boxford 5C collet adapter:It’s a custom taper Colchester/Harrison used. The angle is same as any Morse taper, it just falls between sizes
I found the headstock bush as discussed .
Takes an MT4 but no idea what taper the outer is. Measures 2.25 one end and 2.12" the other. Length is 2.37" approx as measured with a vernier.View attachment 286197
⅝” per foot roughlyEr... Morse tapers all have slightly different angles. From my thread on the Boxford 5C collet adapter:
View attachment 286789
I suspect a lot of these lathe adapters are actually just an extension of one of the standard tapers, rather than 'special' or 'custom' pieces. In the case of the Boxie, the adapter is true 3MT SIZE internally and 3MT ANGLE externally, but further 'up the slope', as it were.
What size Brad? Not sure the triumph I'm buying has one, would you part with one?I’ve got two