Installing a bathroom sink drain requires the right tools and enough know how to get the job done right. It is also a process that takes a fair amount of time to finish correctly.
To begin, you will need to choose a proper drain, one that both fits the diameter of the drain opening in the bottom of the sink and which also matches the desired look of your bathroom. You can search online or visit your local hardware store to find the best drain for your home. If you are remodeling your bathroom, your plumber will be able to install your new bathroom drain along with the rest of your plumbing needs.
When shopping for a new drain, you should also make sure that you have the tools and materials necessary to finish the job. (This will not be necessary if you use a professional plumber.) Plumbers putty, Teflon tape and a wrench large enough to fit around the drain nut should usually be enough to complement what comes in your drain kit. However, every drain assembly is different and additional tools and materials may be necessary.
Even if you are not remodeling and simply need to replace your existing sink drain because it is broken or antiquated, it may be in your best interest to call a professional plumber. There are some risks associated with installing a bathroom sink drain, the largest being the risk of cracking your sink during installation of the new drain.
Other points of concern would be chipping the finish of your sink or improper installation which will lead to a leak. The worst of these scenarios is cracking your sink, in which case, you will need to replace the sink basin. If you want to avoid these potentially expensive repairs, call a plumber to do the job right.