Window Mullion holder
by IonEwe, published
the plastic holder bits on the ends of my window mullions didn't hold up to 20 + years of UV. So I reverse engineered them and i'm printing new ones.
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100% infill it needs a support under the nub. add one as a part or turn supports on. Tweeks are done, and added. Depending on your window select R2 for slightly larger slats.