Make sure that you've securely tightened the thumbscrew (the piece that secures the cable inside the drum or handle). If the thumbscrew is loose, the cable will not rotate at all when you twist the handle. The cable rotation is how the drain snake picks up debris, so if it can't do this, your auger won't work.
If the clog is a solid object, the auger head entangles the object. If you don't feel the auger breaking through and twisting getting easier, pull the auger out of the drain — you'll likely pull the clog out with it. Run water full force for a few minutes to be sure that the drain is unclogged.
If your snaking session yields plenty of hair and soap scum, but still leaves you with a slow drain, there's a good chance that the P-trap is still obstructed. To clear it, plug the overflow hole with a rag and fill the tub drain with hot water, which will help to soften and loosen soap scum.
While snaking is generally considered safe for your pipes, it can damage your pipes if they are in bad shape. Homes that have older pipes are more susceptible to this happening as hairline cracks and corrosion occur over time. Surprisingly, snaking your main line can potentially make the clog worse.
Tighten the Thumbscrew
If you hit an obstacle and the cable will not rotate, the thumbscrew likely needs to be tightened. A handle on the side of the snake drum has a place for you to insert a corkscrew and tighten the drain auger. Tighten the auger as much as you can before continuing to snake.
If the plumbing snake is of the right size, it should move into the pipe with ease if you push gently and softly. Try turning the crank in the opposite direction if you think the plumbing snake is getting caught in a corner.
Crank the Handle of the Drain Snake
When pushing the cable through the P-trap, the U-shaped pipe section under the sink, you may encounter some friction and resistance. If this happens, push on the cable while cranking the drain snake slowly. A couple of turns will help the cable maneuver through the bends in the pipe.
Professional plumbing augers are more powerful, but even so, snakes don't clean the drain. While a snake may dislodge the clog and resolve the immediate problem, accumulating sludge coating the wall of the pipe means clogging will likely recur.
Use a drain snake when your sink, shower, or tub drain is draining slowly or is not draining at all due to soft clogs located up to 15 to 25 feet down the line. Snaking or augering a drain can often solve water drainage problems that cannot be cured by chemicals, plunging, or by using a plastic hair snake.
If the bottom of the pipe or fittings are missing this can cause the snake to catch and break the pipe. It can also cause the equipment to get stuck. Broken PVC pipe is another issue with drains. If PVC is installed correctly there is usually no issues.
Preparing to Snake a Clogged Drain. First, purchase a suitable plumbing auger at a local hardware store or online. Make sure it's long enough to extend throughout a good portion of your drainage system. Fifteen to 25 feet is fine for most households, but larger properties benefit from 30 to 50 feet extensions.
As you push the snake into the drain, rotate the handle clockwise.
Insert the snake into the open drain until it meets resistance. It could be a bend or the clog causing the stoppage, and the standard procedure is to tighten the setscrew then crank the snake clockwise while applying moderate pressure. That should get you past the bend easily without any pipe breaks.
Of course, snakes don't have limbs or opposable thumbs, but they're still excellent climbers and can scale anything from lattices to drainage pipes to adjacent trees.
Using a snake is also more invasive and time-consuming than using a chemical cleaner is, and can often become a dirty job. When it comes to getting at and removing major clogs or clogs that are deep down in your pipes, however, a plumber's snake is your best bet.
Baking Soda and Vinegar
If you plan to use vinegar and baking soda to unclog your drain you should pour 1/2 cup of baking soda down your drain and 1/2 cup vinegar, plug the drain and then let that sit for one hour. After the hour is up, pour a pot of boiling water down the drain.
Do you need a plumber to snake a drain? For more minor clogs, you can snake your own drain. However, for heavy-duty clogs or to reach a clog far into your home's plumbing system, you'll need a power auger. A trained plumber best uses this type of tool as untrained individuals can cause pipe damage.
Insert the snake's head into either the drain (if you didn't remove the trap) or the access point on the wall. Avoid running hot water while you snake, and use cold water instead. If the pipe is severely clogged, it will only trap this hot water in the pipes and damage them.
A plumbing auger or plumbing snake is a long, flexible metal cable with a small, uncoiled spring on one end and a handle on the other. The auger head on the snake looks like a corkscrew. A home plumbing auger is usually around 20-50 feet long. The cable coils up into a circular housing when you're not using it.