HERCPULLEYS: Heavy lifting system for 550 paracord

HERCPULLEYS is a heavy-duty, fully 3D-printed pulley rig engineered to drastically reduce lifting effort while utilizing zero external metal hardware. Designed for maximum mechanical efficiency, this system distributes forces evenly to protect your prints and maximize load capacity. Key Features 1/6 Mechanical Advantage: Reduces the perceived load to approximately 17% of the total weight, making heavy lifting significantly easier. Independent Axle Design: Each pulley features its own independent axle to distribute forces equally across the rig and prevent localized stress concentration. Integrated Bearing Rollers: Utilizes a robust, 3D-printed solid bearing roller system for smooth operation without requiring metal bearings. Hardware-Free Assembly: Completely 3D printable. No bolts, nuts, or pins are required—only standard superglue for assembly Tested Capacity: Successfully tested up to 80 kg of load (video included: I am 90kg plus 10kg swing seat minus 16.7kg upward pulling from my hand). Required Cordage: This system is engineered specifically for use with 4mm 550 paracord. ASSEMBLY INSTRUCTIONS:   Critical Print Settings The printing parameters provided in the print profile are highly specific and critical for performance. To ensure proper structural integrity and safe load-bearing capabilities, these settings must be kept exactly as configured without unauthorized alterations.   Operation Note During heavy lifting, you may hear cracking sounds. These are normal noises produced by seams and minor roller position shifting under high load, which is expected behavior for this design and should not cause alarm.   SAFETY WARNING: This model is intended for experimental and hobbyist use only. 3D-printed plastics (including PLA) can degrade over time, suffer from layer delamination, or fail unexpectedly under stress due to printing flaws, material fatigue, or environmental conditions. Do not use this system for overhead lifting, supporting human loads, or applications where failure could result in personal injury or property damage. Always inspect components before every use, wear appropriate safety gear, and never exceed loads you are comfortable safely managing. The creator assumes no liability for equipment failure, injuries, or damages resulting from the use or misuse of this model.   Boost MeCountless hours of simulation and test prints went into bringing this to life. If you like it, consider dropping a boost!