As [member=75780]woodbutcherbower[/member] has said, dry PTFE spray is your friend. Not only for cutters and saw blades, but also the underside of tracksaws, all the bars on a sliding mitre saw and the 2 pillars on a router along with the router base. In fact, just about anything mechanical we use that needs a clean slippery surface. Unlike silicon spray, PTFE drys out and dosn't attract oil and sawdust to stick to it. PTFE also helps to reduce wear on sliding parts. To give you an example, in the last 35 years of kitchen fitting i have had only 2 routers. Both have been treated regularly with PTFE and both are as good as new (they are both Makita though [smile]) One is now "retired", but still works as new.