@gr5 & @SteveCox3D thank you for your time and your answers.
In my experience it is better to print wood building screws in horizontal position. (I only have experience with non metall filaments) Then the flanks of the thread are better and the overall quality is better. When I want to print it horizontally I need BASF Forward AM Ultrafuse® Support Layer right? When I print it in that position I can make it in a the size of a palm and only a z-hight of 20 mm. Could this be a solution for the problems in the sintering process?
For the size I chose M8 because I thought it would be easier to print. What do you think is the smallest thread size which could be printed accurate?
Another topic is the air manager – I read different opinions on this: Some say it is necessary, because of the heat control – other say it is good without it. I´m just not sure if it is smart to buy it before I know that it is possible to print the parts I need with metal FFF.
Thank you in advance for your time and expertise.