You only have to have to place the wire between the jaws and shut. The round jaw will push the wire in the concave resulting in a nice half circle loop. Concave pliers may also be excellent for wire wrapping jewellery craft. Flat nose pliers are perfect for gripping wire https://artisanpliers21840.blgwiki.com/1084986/the_fact_about_diy_project_ideas_that_no_one_is_suggesting