I want to add a site glass to a catch can. I have never found any for sale. Best place? Does the glass slide in after or weld it as one piece ?

And what do you guys use for round tube for catch cans for the filters. I used to use 1.5" aluminum but see other people have some nice looking parts with a 'flare' or taper. Who makes these?

 

Grainger
mcmastercarr