subject: Helpful Tips For Your DIY Projects Plumbing [print this page] With great care, place the dope round the threads. The pipe is then slid over the wall then from the sink. Slide the big nuts into the threads and make sure you tighten them using your hands. Use a channel lock to give the nuts half turns. Do not exceed the half turn as this will make them break. Your task can be taken to be complete once you are done with all these.