Stereo speaker bi wiring terminal

This is stereo speaker terminal for bi-wiring. One of my terminals for my Dali speaker had broken (seen on one of the pictures) so I measured the sizes and tinkered a new one. It has to be printed with support - and I am a beginner so I am not sure if I got the support right - it was very tricky to remove. Luckily it is on the inside of the speaker.
Anyway these settings for slic3r was used 50% infill, Pattern: Pillars: 10mm pattern spacing, 1 interface layer XY separation 50%.