Kẹp giữ nệm cho khung giường sắt

Metal bed frame screw clamp mattress holder with post.  The post points up and the lays flat on the side of the mattress, preventing sliding.  I use this on a full mattress that likes to slide under the decorative frame and shelf for kids room. Works well. I've been using for 5 months and have not had to reposition the clamps, even with bedding changes. I have one at the head and foot of the bed tucked behind the side board. 

Printed with Gcode on a Flashforge Adventurer 5m with rapid petg black filament. Used this STL file in Orca to get my desired settings.