here is my plan since i work at a civil plumbing company which have easy access to larger diametres i plan to weld a brass flange on to a copper pipe then bend and make it fit into two 40mm pipes since thats what ive got alot of around the house run it for a conciderable length then join it the same way i started. i am a plumber so im familar with the propertys of the metal and have access to the tools. it's just an experiment which i just gotta find time to do
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