Work Smart, Be Prepared, and Make Your DIY Dreams a Reality With 3M. Work smart, be prepared and make your DIY dreams a reality with 3M. Looking to update an heirloom table with a new stain and varnish? Need the right tools and tips to check for lead before sanding? Eager to freshen up your outdoor living space — but not sure how? Well then grab your tool kit and hang on to your inspiration board, because your next home improvement adventure starts at 3M DIY.