It took a few years, but National Gypsum has followed USG’s example and formulated a joint compound that can be sanded without unleashing a massive cloud of dust. ProForm Lite Ready Mix Joint Compound with Dust-Tech is suitable for all phases of the finishing process. The manufacturer claims that it reduces airborne dust by 60 percent (compared with conventional joint compounds) and doesn’t clog sanding screens, as competing low-dust products tend to. A 5-gallon bucket costs $14 to $16. National Gypsum Co., 800/628-4662,