Here are some tool rests I made from scrap steel and some 1" round bar stock I had laying around.
The 3 curved ones are from the tube support of my old Craftsman lathe. I split the tube in thirds and attached a length of 1/4" drill rod on the top with 5 minute epoxy. I dropped one about 12" on a table and the drill rod popped off the top of the rest so it got brazed back on. I don't know how Robust does it but my epoxy was pretty old, maybe that's why it didn't hold. Anyway the brazed on drill rod works fine.
ToolRests2.JPG ToolRests3.JPG ToolRests4.JPG ToolRests5.jpg ToolRests1.JPG