How to Upholster Rounded Corners + Tips Tricks & Tutorial for How to Re-Upholster Dining Chairs. Do PERFECTLY upholstered chairs that are smooth and tight with perfect corners. Upholstery DIY tutorial with Upholstery fabric projects. Love the houndstooth fabric on these mcm teak dining chairs. Check out the blog for more DIY furniture makeovers and DIY home decor project ideas.