I hope this thread develops where simple practices we all stumble across, by necessity or otherwise, are listed for others to consider. Hopefully the posts will be brief, maybe just a couple of paragraphs at most - and one post dedicated per practice. Please make the posts in a colour, so that they can be distinguished from any comments that they entice which can then be in black. Apologies to all those that may use these processes all the time, but for the amateur like me, some of these processes have made my machining life a lot easier and wanted to share them, hopefully inspiring others to do the same. I'll start off with a few of mine.