We’ve all been there: standing in front of a freshly painted wall, pencil behind one ear, holding a heavy power strip or a beautiful floating shelf. You’ve measured the distance between the mounting holes three times, yet somehow, after you drill the holes and drive the screws, the object refuses to click into place. It is off by just a hair—enough to ruin your afternoon and leave an unsightly, unnecessary hole in your drywall.
In the world of DIY, we are often told to “measure twice and cut once.” But when it comes to mounting hardware with those tricky “keyhole” slots on the back, even the most careful measurements can fail. What if I told you there is a professional secret that eliminates the need for a ruler entirely? It’s a method used by expert handymen to get a perfect fit on the first try, and all it requires is a single roll of painter’s tape.
This hack is a game-changer for anything with fixed mounting points—electronics, heavy mirrors, or even those decorative wall-mounted coat racks. Instead of wrestling with a tape measure, try this: Take a strip of blue painter’s tape and lay it across the back of the item you want to hang, covering both mounting holes completely.
Next, take a pen or a sharp pencil and poke a hole through the tape exactly where the center of each mounting slot sits. If it’s a keyhole slot, make your mark at the very top of the circular opening where the screw head will eventually rest. Now, carefully peel the tape off the back of the object.
This piece of tape is now your perfect, one-to-one template. Bring it to the wall where you want to mount your item. Use a small level to ensure the tape is perfectly horizontal, then press it onto the wall. You now have a visual guide showing you exactly where your screws need to go. No math, no guesswork, and no “close enough” errors.
Simply drill your holes or drive your screws directly through the marks on the tape. Once the screws are secure, peel the tape away and discard it. Your item will slide onto the screws with a satisfying, precise click every single time. It is a simple shift in perspective: don’t measure the distance; replicate the layout. Once you try the Tape Trick, you’ll never look at a mounting project the same way again. Happy hanging!
