this is a strap buckle for a up to 25 mm. strap for back pack, clothing accessory sewing item .i used hatchbox abs 100 percent fill in temps are on an open ender 3 pro bed was 86 due to glass bed and print head was 214 the speed of the print was 60 to get proper adhesion it works well on the shoulder strap of my backpack it is best to standing up vertical i used elmers glu stick therefore no raft or support was needed