Ask the Builder: Even a novice can make simple bathroom sink fix
I closed my sink drain stopper and now it won't open again. Is there any way that I can repair this without hiring a plumber? - Quora
Your Step-by-Step Guide to Sink Stopper Repair
Sink plug jammed, how to go about fixing it? — MoneySavingExpert Forum
How to Fix a Sink Stopper | HomeServe USA
Quick Tip #26 - Pop-Up Stopper Sticks | MisterFix-It.com
How to Remove 6 Different Kinds of Drain Stoppers
How to Fix Stopper in Bathroom Sink Faucet Quick and Easy - YouTube
Sink Plug, Sink Strainer Spring Core Pop Up Drain Plug, Universal Sink Stopper Replacement for Bathroom and Kitchen,Chrome Bath Plug No Overflow Basin Drain Filter Hair Catcher with Basket (1 Pcs) :
How to Fix or Maintain Your Sink's Pop-Up Mechanism - YouTube
3 Ways to Fix a Sink Stopper - wikiHow
What can cause a sink's pivot rod connector to leak water? - Home Improvement Stack Exchange