3D printing and CNC materials question Answered
What common material is best for off-the shelf rigid rods/bars for things like 3D printers and CNC machines? I'm actually thinking about making a 3d pantograph for expansion/reduction of originals sculpted in epoxy, (perhaps to be added/linked with a print/machining rig later. I see a lot of what seems to be steel tube or rod in people's projects, but steel is bouncy. Is there a particular cast or extruded alloy of steel or aluminum? Cast iron? Bronze or brass? I don't have a machine shop or a lot of money, so I have to use stock material or salvage, and I'm not so sanguine about salvage for this most critical element of the machine. Any thoughts? Thanks!