Charge block for .223/5.56 brass x100 pieces. This is my first one, but will make other calibers someday. Features:

• Stacking
• Neck up or down
• Fits fired and resized brass
• x4 slots on bottom for 1/2 oz. "CK Auto Steel Adhesive Wheels Weights" to add weight so it doesn't move around. Could glue in fishing weights though.
• Outlines on bottom for rubber feet lined up with holes for stacking with right size rubber feet
• Clearance for Lyman funnel
• Marked rows
• Tapered holes

I used PLA, 0.3 layer, 4 wall, 4 top/bot, support on bottom only, and gyroid 25%. Hide the z seam best you can on the outside or you might get issues with clearance.