verify-offset-smoker.py, ezdxf 1.4.5, files in offset-smoker OK shell: DXF R12 in millimetres, no audit errors OK shell: blank pi x 603.25 mean by 1219.2 1895.166 x 1219.200 OK shell: lid from 100 to 220 deg round from the seam 526.43 to 1158.16 OK shell: lid 50.8 in from end A and ending 50.8 before the chimney 50.80 to 965.20 OK shell: chimney hole on the bore Ø145.6 at 1092.2 from end A, on top 0.0000 OK shell: chimney hole clear of the lid OK shell: area and mass match the bill of materials 2,293,818 mm2, 114.34 kg OK capA: DXF R12 in millimetres, no audit errors OK capA: outside Ø609.6 609.600 OK capA: opening 495.3 wide (firebox inside) at its top 495.300, top -31.750 OK capA: opening 101.6 high 101.600 OK capA: opening inside the shell OK capA: grease bridge at least 38.1 below the opening 165.1 OK capA: opening area worked out here matches the drawing 50,322 mm2 OK capA: area and mass match the bill of materials 241,541 mm2, 12.04 kg OK capB: DXF R12 in millimetres, no audit errors OK capB: Ø609.6 OK capB: area and mass match the bill of materials 291,864 mm2, 14.55 kg OK fbFront: DXF R12 in millimetres, no audit errors OK fbFront: 508 wide, bottom 508 below the firebox top 508.000, -533.400 OK fbFront: arc fits round the cap (R304.8 on the chamber axis) OK fbFront: area and mass match the bill of materials 136,654 mm2, 6.81 kg OK fbBottom: DXF R12 in millimetres, no audit errors OK fbBottom: 508 x 508 508.000 x 508.000 OK fbBottom: area and mass match the bill of materials 258,064 mm2, 12.86 kg OK fbTop: DXF R12 in millimetres, no audit errors OK fbTop: 508 x 508 508.000 x 508.000 OK fbTop: area and mass match the bill of materials 258,064 mm2, 12.86 kg OK fbSide: DXF R12 in millimetres, no audit errors OK fbSide: 508 x 495.3 508.000 x 495.300 OK fbSide: area and mass match the bill of materials 251,612 mm2, 12.54 kg OK fbBack: DXF R12 in millimetres, no audit errors OK fbBack: 495.3 x 495.3, fits inside the four other plates OK fbBack: door opening 393.7 x 393.7, 50.8 margin all round OK fbBack: area and mass match the bill of materials 90,322 mm2, 4.50 kg OK door: DXF R12 in millimetres, no audit errors OK door: laps the opening by 25.4 all round 444.500 x 444.500 OK door: 2 air inlets of Ø101.6, each with a pivot hole OK door: area and mass match the bill of materials 181,199 mm2, 9.03 kg OK damper: DXF R12 in millimetres, no audit errors OK damper: Ø177.8 covers the inlet with 38.1 to spare, pivot hole inside OK damper: area and mass match the bill of materials 24,745 mm2, 1.23 kg OK chimney: DXF R12 in millimetres, no audit errors OK chimney: template pi x 152.4 round 478.779 OK chimney: saddle 9.68 deep for the R304.8 shell, 406.4 at the short side 9.679 OK chimney: every template point on the pipe-to-shell intersection 0.0000 OK manifest: rules of thumb recomputed from the sizes fireboxVolume 108%, inletArea 112%, throatArea 130% Total steel: 263.67 kg ALL CHECKS PASSED