More newb questions on 4" perf plate...
Do you guys buy sheet copper in say1.22mm then cut with a 4&1/8" hole saw no centre drill piece like arbour i think it's called and shave/grind the plates down to required size later? Not sure on what size is required for internal 4" as haven't got the 4" pipe yet.
How the F do you make the ferules for sight glasses fit the curve of 4' so perfectly?
For copper sight glass ferules do you use the simple tap it out flaring / easy flange type process or is there some cute flaring tool for this?
For column join to deph at the top for reflux do you easy flange it or is there a better way if you prefer to stay all copper?
cheers
bt1