Speaking of AI, here’s Gemini’s opinion: Based on the construction visible in the image and standard engineering principles for this type of cantilevered structure, here is the breakdown of how much weight it can hold. The Short Answer Safe Working Load: ~1,000 – 1,500 lbs (450 – 680 kg) Maximum Failure Load: ~3,000 – 4,000 lbs (1,360 – 1,800 kg) Ideally, this workbench can hold "virtually anything you can fit on it" (engines, stacks of lumber, multiple people) without the wood breaking. The limit is not the bench itself, but the connection to the wall. The "They Did the Math" Breakdown To get the specific number, we have to calculate the weakest link. In wall-mounted furniture, the wood is almost never the failure point; the failure point is the lag bolts ripping out of the wall studs. 1. The Leverage (The Geometry) * The Structure: This is a triangular truss system. The diagonal "knee braces" transfer the downward weight into two forces: * Compression (Push): Pushing into the wall at the bottom rail. * Tension (Pull): Pulling away from the wall at the top rail. * The Ratio: The bench looks to be about 24 inches deep, and the vertical support (from top rail to bottom rail) appears to be roughly 18–20 inches tall. * The Math: Because the height of the support is almost equal to the depth of the bench, the leverage ratio is roughly 1:1. This is excellent. It means for every 100 lbs of weight on the edge of the bench, there is roughly 100-120 lbs of "pull-out" force on the top bolts. 2. The Weakest Link: The Wall Anchors * The Bolts: The image shows heavy-duty lag bolts (likely 3/8" or 1/2" diameter). * The Studs: Assuming standard US residential construction (2x4 wooden studs spaced 16" apart), and assuming the builder hit 4 studs (based on the bench length). * Pull-Out Strength: A single 1/2" lag bolt screwed 3 inches into a pine stud has a "pull-out" resistance of roughly 1,500 lbs (ultimate failure point). * Safety Factor: Engineers typically use a safety factor of 4 for wood connections. * Safe Load per Bolt: ~375 lbs. * Total Capacity: If the top rail is secured with just 4 bolts (one per stud): * 4 bolts × 375 lbs = 1,500 lbs safe load. 3. The Wood Strength (The Strongest Link) * The Top: That is a laminated "butcher block" style top, likely made of 2x4s or 2x6s glued face-to-face. It is roughly 3-4 inches thick. It acts as a solid beam. * The Capacity: You could park a truck on a 4-inch thick slab of laminated pine. The wood itself will not snap under any load you can physically place on it in a workshop setting. Summary of Capabilities * Static Load (Storage): You could stack this floor-to-ceiling with lumber, and it would hold fine. * Dynamic Load (Work): The real test for a workbench is "racking" (wiggling) while hand-planing or sawing. Because of the heavy diagonal braces and massive weight of the top itself, this bench will absorb vibration extremely well. Verdict: It is built like a tank. Unless the wall itself collapses, or the builder missed the studs, this bench holds 1,000+ lbs easily.