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This cheat sheet provides an essential breakdown of the Mold Convention Unit specifications used in ShipConstructor and Rhino design software, detailing the conversion between feet and millimeters. The breakdown includes critical frame spacing information, steel plate sizes, and pipe dimensions, crucial for accurate modeling and assembly. Users can efficiently reference unit breaks relative to frames, ensuring precision in their projects. Ideal for engineers and designers working on shipbuilding projects, this guide facilitates seamless coordination between CAD coordinate systems.
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TWR 841 NARA Project Modeling Cheat Sheet Mold Convention Unit Breakdown Rhino (feet) ShipConstructor (millimeters) Unit breaks: 100mm fwd of bhd 100mm abv molded deck 2310 2210 ASSY_003 ASSY_004 ASSY_001 ASSY_002 ASSY_002 ASSY_001 ASSY_002 ASSY_003 ASSY_001 3110 2110 1110 ASSY_003 CAD coordinate systems Frame spacing Fr 0-28 = 1219 mm (4’-0) FP is 609 mm (2’-0) aft of FR 0 FR2 = 2438 FR6 = 7314 FR12 = 14628 FR16 = 19504 FR18 = 21942 FR20 = 24380 FR22 = 26818 FR23 = 28037 FR24 = 29256 FR25 = 30475 FR28 = 34132 Steel Plate sizes # in mm 7.65 3/16 5 10.2 1/4 6 12.75 5/16 8 15.3 3/8 10 17.85 7/16 11 20.40 1/2 12 CAD System Origin Rhino AP ShipConstructor Frame 0 Pipe sizes Dia Bend radius 1 75 mm 2 ½” 190 mm 4 300 mm 6 450 mm