bathtub trap replacement Home › Forums › Public Forums › General Plumbing › bathtub trap replacement This topic has 1 reply, 2 voices, and was last updated 23 years, 2 months ago by Retired plbg1. Viewing 1 reply thread Author Posts 26 Jul 2003 at 6:34 am #276789 MichaelMember I’d like to replace the trap for a new bath install. What is the best way to attach a new ABS trap to cast iron. How can cast iron be cut? Thanks 26 Jul 2003 at 11:19 am #294796 Retired plbg1Participant Cut the pipe with a cutting blade for cast iron using a sawsall. You need an abs adadpter from castiron to abs and a nohub band. Author Posts Viewing 1 reply thread You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In