The screens are pretty much brand new. Most of them are from Pocono and they seem really good quality to me.
I tried doing a pull stroke instead of a push and the lines went away. However, I am a lot better at clearing the screen with the pull stroke than the push stroke.
I did some experimenting and he is what I found. I've been using a logos press where all your screens are higher off the platen on the side closest too you. I never noticed this problem with the logos press.
I just got this Brown pony printer where you can adjust the tilt. I started noticing this. It shows up by far the most if I print on just a plain piece of paper. It is really obvious on paper. On test pellons it goes away a little bit and on actual shirts it is minor, but still faintly noticeable. The bottom edges come out less defined.
I tried raising the off contact without adjusting the tilt, until the screen is higher on the side closest to me. When I did that the lines went away with the push stroke.
Any thoughts?