5mm dowels arrived and have been inserted into the turret. Definitely no play now when trying to rotate the turret by hand, which was noticeable before.

I've written some Gcode scripts to perform tool changes, and am still struggling with getting the turret to a known safe position before initiating a tool change. As the parting / grooving tool stands so proud of the turret, it will hit the Z axis slides if the turret is rotated with the X axis at anything other than near the +ve limit. Still waiting to hear back from Planet-CNC as to why G53 moves are apparently affected by tool offsets, which is why no progress recently.

The TNMC inserts arrived today, so I'll be able to repopulate the original Boxford threading tool, as that is left handed and is easier to accommodate in the gcode I'm writing, and requires less material to be removed to make space for the tool head.

Adrian.