12lb DUMMY

The 12lb DUMMY is simple assembly used in the NHRL Functionality Test for the 12lb Weight Class.

12lb DUMMY with Banana for Scale

The DUMMY will be reviewed and may be tweaked in upcoming events.

The assembly is made up of the following components:

Component	Source	Number Needed	Weight Per Item (g)	Total Weight	Material	Infill Setting
Lower Weight Holder	3D Printed	1	117	117	Bambu Labs PLA Basic	15% Grid Infill
Upper Weight Holder	3D Printed	1	71.4	71.4	Bambu Labs PLA Basic	15% Grid Infill
Short Wall	3D Printed	2	64.4	128.8	Bambu Labs PLA Basic	95% Grid Infill
Long Wall	3D Printed	2	68.2	136.4	Bambu Labs PLA Basic	95% Grid Infill
Lid	3D Printed	2	184.5	369	Bambu Labs PLA Basic	95% Grid Infill
Inner Spacer	3D Printed	5	1	5	Bambu Labs PLA Basic	15% Grid Infill
Foot Spacer	3D Printed	4	2.2	8.8	Bambu Labs PLA Basic	15% Grid Infill
Rubber Bumper	McMaster	4	5.8	23.2
Bolt: 1/4-20 x 3.5	McMaster	4	22.8	91.2
Bolt: 1/4-20 x 3	McMaster	1	19.5	19.5
Nut: 1/4-20	McMaster	5	2.5	12.5
Weight	Amazon	2	2268	4568	Cast Iron

All 3D prints use the following settings:

3 Floor Layers, 5 Roof Layers, 2 Wall Layers.

Total Weight: 5551g ~= 12.2 pounds

For those who would prefer to cut their own weights, they can be easily cut from steel plate. A small spacer may be needed to account for the difference between the width of the commercially available weights versus the laser cut steel.

You can download a CAD model below:

STEP Download

STL Download