Rain Water diverter (Regensammler) for 100mm metal downpipe

Looking for an efficient rain water diverter on a pretty busy 100mm (DN100) downpipe at my house I found that the few models that came close to my expectations were in the price range of 80 to 180 Euros. So I decided to make my own.

Due to surface tension, almost all water in a downpipe runs along the walls. An effective diverter must collect it right there. The center is left open, almost at the whole diameter, so that any dirt and moss from the roof can fall through without clogging the drain.

In heavy rain situations the downpipe must handle lots of throughput. That is why I chose a DN50 outlet. Only a few commercially available diverters feature more than 1 inch outlets.

The diverter has been tested successfully and is working with high efficiency.

I strongly recommend to print this in PETG or similar durable material for strength. I also have constructed a “support” base that helps printing the whole model at a 30° angle. This eliminates any need for other support. Moreover the angled print creates a layer structure that is diagonally aligned to the mechanical load vectors and therefor improves general robustness.

Material: Stronghero PETG black

Layers: 0.15 @ 40mm/s

Brim: 30mm

Walls: 4

Top/Bottom: 6

I also uploaded a 3mf file for Cura that features all settings used in my print, including extra slicer settings for the support base (faster printing, lightning infill, 1 wall etc).

Printing time: ca 39 hours.

Weight: ca 240g