3” column build

[Jmcq2xl]

So to start my 3” flute column I have 8 feet of 3” copper. Now befor the cutting and chopping starts is there a reason why builders don’t put the same size windows on their columns? Like a 3 in column with 3 in windows.

[The Baker]

So to start my 3” flute column I have 8 feet of 3” copper. Now befor the cutting and chopping starts is there a reason why builders don’t put the same size windows on their columns? Like a 3 in column with 3 in windows.

Same reason you leave a small part of the wall when you install a window; there has to be something there to carry the new structure (window).

Geoff

[Yummyrum]

There's no reason that I can see why you can't do it .....Lot of fellas have made sections out of 3" or 4" tees and stuck Sight glasses in them ...but these are preformed .
Sure ..it's going to be a real challenge cutting and fitting the two profiles together but absolutely possible ...me , I'm always up for a challenge but I would pass .

Personally I think 2" sight glasses would be perfectly adequate ...but if you have plenty of 3" and the ability ...then go for it .

[Mr Sippy]

That is what I am doing on my 3 in column. I liked the look better than 2 in. Used the online template calculator for the fishmouth and cut with a jigsaw. Drill press and hole saw for the column. Centering the bit on the column is critical. For a nice fit, wrap some emery cloth on the column and 'lap' the window section of pipe.