WELD-ON 16383 16 Acrylic Plastic Cement, Low-VOC, Medium Bodied and Fast-Setting, Clear, 5 fl oz Tube

Weld On 16. Caveat that the VOCs are brutal and you'll want a respirator, but the connections are at least as good as printed layer adhesion

2 part epoxy or this stuff: https://www.amazon.com/dp/B00R5NYM7M?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_1