A satisfying testable idea: the Great Pyramid coffer's skew could come from one slightly imperfect carpenter's square measuring 90°13′, yielding an 89°47′ cut on one side and 90°13′ on the other — one acute and one obtuse corner from a single tool. The frame saw forms a four-pivot linkage, so that angle should propagate around the block, and the prediction is that other large sarcophagi will show matching angles at opposite corners and mismatched angles on the same side. Suggested method: bolt one end of the frame to both blades, check the angle, then add the other end and recheck. He also notes copper-and-sand slurry polishes sawn faces, so finished slabs needed little extra work. This is offered as a hypothesis, and he calls for new survey data since Petrie's is all he has. 🔍📏
Video argues an off-square carpenter's square produced the sarcophagus corner error
EgyptGeneral
Key facts
- The presenter proposes that a carpenter's square measuring 90 degrees 13 arc minutes was used to set the blades in the frame, giving a 89 degree 47 arc minute cut on one side and a 90 degree 13 arc minute cut on the other
- He notes that one exterior and one interior measurement with a single slightly incorrect carpenter's square is enough to produce one acute and one obtuse corner angle
- Falsifiable prediction: other large sarcophagi and coffers should show matching angles in opposite corners and non-matching angles in same-side corners, because the connecting saw frame forms a four-pivot linkage that propagates the angle around the block
- Proposed procedure is to attach one end of the frame to both blades, check the angle, then add the other end and recheck before securing
- Stated hypothesis: parallel sides were cut simultaneously with two blades fixed in a frame, errors in frame-to-saw angle were imprinted on opposite corners, and the newly cut exterior sides were used as guides for interior cutting
- The presenter notes that spent copper-and-sand slurry polishes the sawn faces, so detached slabs required little final finishing work
- The presenter explicitly presents the reconstruction as a testable hypothesis rather than established fact, and calls for fresh metrological survey data of large coffers, noting Petrie's data is the only source available to him
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