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I wouldn't be without my gasket cutting tool hands down my favourite kit.
I use a place in London called OrbicWhere do you buy the sheets of gasket paper?
I call these my babies for some reason (Baby grips) :S "Pass me my babies", or "wheres my babies". God knows how many times the mrs has forgotten to take these out me work trousers sending them through the washing machine the poor things, but they have never let me down...... touch wood, hand them for about 6 years now.
Reply to the thread, titled "Tool" which is posted in Plumbing Tools on Plumbers Forums.
We recommend City Plumbing Supplies, BES, and Plumbing Superstore for all plumbing supplies.