when you do prints you need to work out what orientation you want the strength in. Prints take a long time in TPU, each filament has its own timing. When you slice the object you want to print, look and see what infill you use, for TPSU if you want a firm finish you can reduce infil to say 50%, try it on a small print. When I reduce infill in slice settings, I change the shape of the infill as well, mostly I use a honeycomb infill, as that is where I get good strength from, in regards to compression, but there are other infill types you can choose from, like grids or lines etc, these all have an effect on the print time. Have a look in the forum associated with your printer, a lot of people share print profiles for different materials for your specific printer, you can get a lot of knowledge from reading about other people's projects. Once you get your settings right for the object you are printing, make sure you save it. That said, print settings that work for a spark plug sized object, often don't work for a golf ball sized object. Thats when you really need an enclosure for your printer. Sounds silly but even a fan or air conditioning blowing on the or near the print will have an effect on the print, so its best to have the printer enclosed.
