Harbor Freight 7x10 Carriage Lock (no milling needed)

[@gagasmancave8859]

simple , cheap effective way of preventing the carriage getting pushed back when facing Dalton your a star

[@drpipe]

Your device is a "stop" not a lock

[@richardwilliams7020]

Or you could just engage the lead screw nuts with the lead screw in neutral. That’s been working for me for 7 years.