How to print camshaft?

I have PowerSpec Ultra 3D printer (FlashForge Dreamer clone) and Simplify3D. How do I print the camshaft shown in the image using PETG filament? I tried printing it vertically and horizontally but I get failed printed. I tried using rafts and supports.

I' m trying to upload a screenshot but I couldn't do it. How do I fix this?

Hi

The image didn't make it through so not much to go on.

One approach is to print a complex part in chunks and glue them after they are printed.

Bob