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Removing stuck brass drain fitting from cast iron pipe

๐Ÿ  homeproduct problemSingle report โ—โ—โ—โ—โ— severity 3/5

A homeowner reports difficulty removing a brass fitting threaded into a cast iron bathtub drain stack located in a tight crawlspace, where limited leverage and standard methods like penetrating oil and heat have failed.

Who's affected: A homeowner performing DIY plumbing repairs in a confined space.

โš ๏ธ Single report. This is one person's account. We mark it so until more voices confirm it.

What people do today

๐Ÿ”ง Fix this

Ideas a builder, maker or community group could start on:

  1. A specialized compact internal pipe wrench designed for high-torque extraction in confined spaces.
  2. A chemical solvent kit specifically formulated to break down corrosion between brass and cast iron threads.
  3. A rental service for professional-grade, low-profile hydraulic pipe extraction tools for DIYers.
I want to build this

Real voices

โ€œI've tried PB blaster and hitting it with MAPP gas and it doesn't seem to loosen.โ€

Source: Stack Exchange (diy) ยท CC BY-SA 4.0, user-contributed content from Stack Exchange; summarized and modified

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