I had my lathe down for maintenance so I thought I would post the details of some of my mods.
Commercial ones are available but I liked the low clearance this one provides.
It consists of the bottom "nut clamp". 5/16" thick I believe.
The spacer, so I don't clamp down so hard to break the carriage.
The upper bar that installs in the traveling steady holes.
The socket head cap screw that does the locking. I ground the
head of the cap screw to make it as short as possible and still
have the hex inside.
I did grind down a standard allen key wrench to make it as short
as possible for this locking bolt.
The only area that is a bit of a pain is that the socket head cap
screw locking bolt will fill with chips. Not really a big deal, just keep
a sharp pointed rod nearby and no problem.