total blockage in kitchen sink

[razorback]

what will cut through whatever is blocking my kitchen sink? I've put sulfuric acid, and then later i put a whole gallon of liquid plumber down it, got a snake to go down to the first bend subfloor, then tried suction. nothing, still not draining.

 

[MikeJhn]

Check your first manhole outside it could be backing up from that once open rod from that end.