Guys I see most have some type of rubber mat that connects to the saddle and to the column of the mill to protect the ways.I am placing a order with McMaster for some screws and gasket material so I would like to order a piece of rubber also to help keep swarfs from ways on the knee and column.What do I need to get for this purpose?Looking at 12"x24" x 1/16 thick but asking if I want soft,med,firm?Here's what I'm looking at https://www.mcmaster.com/catalog/124/3655