https://prnt.sc/vctypn
See the black horizontal line on the pipes going vertical? Not 100% sure if its this mod causing it, just something I noticed.
-Pwnographic

Thanks for bringing it to my attention. Fixed in the last update.

No problem, looks great now, thanks. The pipes coming out of boilers, chemical plants etc could also use some blending or something perhaps? Its not as bad https://prnt.sc/vfe60t

I improved it in the last update for FactorioHD:Production, but it isn't perfect, those black "lines" in the pipe sprite actually exist in vanilla https://prnt.sc/vfo7kz , when they're upscaled it makes those lines more pronounced.

Fixing it is going to require manual work on my side, so it's "good enough" for now, but I'll try to improve it when I have the some time.

Thank you! You do great work, yea its totally fine.