Flange for 40mm Pipe

I needed this flange to plumb up my house tank pump. I have a few connections on the suction side. Make sure if you make and use this, you put a rubber flange seal on the face of the flange. This can be created from an inner tube. For strength, I tend to set my layer numbers to fill the whole part. 6mm bolts with washers are used to clamp faces together.