How do you remove the center portion of the flange after you have mounted onto the floor

Hi CGJamma

Are you asking how to remove the "knock out" plug in the center of the flange?

If so, you hit the raised ridge with a hammer and that starts to break the seal. Continue hitting the raised ridge until the cap is slightly loosened and then use a pair of pliers to wiggle the plug back and forth to remove it, OK?

You could also use a dremel tool with circular saw blade and cut it out if the hammer method worries you.

Back to you...

Mark

Had me wondering how you flushed through a 3/4" flange!! 3 or 4" flange. Mark gave you good directions, I'd do the same.