Maybe there are those who remember old topics. I'm trying to make a header for my car.
I am planning to make the collector in cnc and now I will make a polyurethane sample.
but I did not know how to act at the pipe junctions. I wonder which would be more durable to slip over or open a weld mouth? It is difficult or even impossible for me to weld internally in slip over design, is this a disadvantage? On the other hand, the slip over design is actually much nicer.
I'm curious about your opinions
![Image](https://shop.elmerracing.com/29-large_default/4to1-175in-225out.jpg)
![Image](https://shop.elmerracing.com/94-large_default/6-to-precision-7-series-vband-125sch10.jpg)
Regards,
Semih