solvecraft/docs/kernel-ladder.md

Kernel complexity ladder

Generated by cargo xtask kernel-cases --ladder. The ladder in tests/kernel-cases/ladder/ orders kernel operations by complexity: each tier builds on the shapes of the tiers before it, so the last case carries everything. Every case is a test with its own right answer (analysis or invariants, as in the regression rig); the golden (tests/kernel-cases/ladder/golden.json) records each case's time and what it made, orders each tier by time and flags slowdowns. The cases run on SMLib.

The frontier is the first case of a tier, in ladder order, that fails (fail, crash or hang).

Tiers

Tier	What	Cases	Results	Frontier
01-primitives	primitives with closed-form volumes	6	6 pass	–
02-booleans	booleans in the degeneracy classes, and cuts that end in a single line	25	25 pass	–
03-analytic-profiles	extrudes and revolves of line-and-arc profiles	10	10 pass	–
04-spline-profiles	spline profiles, sweeps and lofts	12	12 pass	–
05-holes-and-taps	holes and tapped holes	13	13 pass	–
06-threads	modelled threads	19	19 pass	–
07-fillets	constant, variable and corner fillets	18	17 pass, 1 unsupported	–
08-chamfers	chamfers	8	8 pass	–
09-shells-and-offsets	shells and offsets	15	15 pass	–
10-patterns-and-mirrors	patterns and mirrors	8	8 pass	–
11-cumulative-parts	parts combining every tier	4	4 pass	–

Cases where SMLib's check gave no verdict on a body (SMLib can't take the record yet), so only the record's checks graded validity: 0.

Cases, in ladder order

Times are the commands' own, in seconds, from the case's process; golden is the recorded time.

Case	What	Answer	Result	s	golden s	changes
ladder/01-primitives/005-sphere	a sphere r10	analytic	pass	0.003	0.003
ladder/01-primitives/001-box	a 60x40x20 box: the stock every later tier starts from	analytic	pass	0.004	0.004
ladder/01-primitives/004-frustum	a cone frustum r10 -> r5, h20 (revolved trapezoid)	analytic	pass	0.017	0.017
ladder/01-primitives/003-cone	a cone r10 h30 (no cone primitive: a revolved right triangle, its axis a sketch line)	analytic	pass	0.025	0.025
ladder/01-primitives/002-cylinder	a cylinder r10 h30	analytic	pass	0.032	0.032
ladder/01-primitives/006-torus	a torus R20 r5	analytic	pass	0.575	0.575
ladder/02-booleans/001-coincident-face-join	a 60x40x10 box joined exactly on the stock's top face: one 60x40x30 box	analytic	pass	0.006	0.006
ladder/02-booleans/019-notch-flush-with-end-face	a notch 40x20 through the height, its end flush with the stock's end face: a U	analytic	pass	0.007	0.007
ladder/02-booleans/004-edge-on-edge-no-overlap	a cut tool that shares only the top front edge of the stock	analytic	pass	0.010	0.010
ladder/02-booleans/015-knife-edge-wedge-cut	a triangular prism cut whose slope meets the bottom face along one line (a knife edge), its other faces on the stock's	analytic	pass	0.011	0.011
ladder/02-booleans/014-cut-through-sphere-pole	a 4x4 square post cut off the top of a sphere r10 through its pole	analytic	pass	0.012	0.012
ladder/02-booleans/016-v-groove-pinches-bottom-to-line	a V groove whose apex touches the bottom face along a line, cut through: two pieces	analytic	pass	0.012	0.012
ladder/02-booleans/020-part-back-wall	the running part: a 60x10x15 back wall joined on the stock's top, flush with its back and ends	analytic	pass	0.013	0.013
ladder/02-booleans/003-pocket-flush-with-top	a 20x20x10 pocket whose tool's top is the stock's top face	analytic	pass	0.013	0.013
ladder/02-booleans/002-coplanar-overlap-join	two 60x40x20 boxes overlapping 30x20 in plan, tops and bottoms coplanar	analytic	pass	0.013	0.013
ladder/02-booleans/006-tangent-along-line-no-overlap	a cylinder r10 along X lying on the top face (tangent along a line), cut	analytic	pass	0.016	0.016
ladder/02-booleans/017-cylinder-tangent-top-and-bottom	a cylinder r10 along X tangent to both the top and bottom faces, cut: two pieces with zero-angle cusps	analytic	pass	0.023	0.023
ladder/02-booleans/018-hole-tangent-to-side-face	a through hole r10 tangent to the front face: the front face pinched to a line	analytic	pass	0.026	0.026
ladder/02-booleans/008-near-tangent-gap-1e-6	a cylinder r10 along X 1e-6 mm above the top face, cut	analytic	pass	0.028	0.028
ladder/02-booleans/010-near-tangent-overlap-1e-6	a cylinder r10 along X dipping 1e-6 mm into the top face, cut	invariants	pass	0.029	0.029
ladder/02-booleans/011-tangent-along-circle-through-hole	a sphere r10 sitting in a through hole r10 at the top edge (tangent along the hole's top circle), cut	analytic	pass	0.035	0.035
ladder/02-booleans/005-vertex-on-face-no-overlap	an inverted cone whose apex touches the middle of the top face, cut	analytic	pass	0.043	0.043
ladder/02-booleans/007-near-tangent-gap-1e-3	a cylinder r10 along X 1e-3 mm above the top face, cut	analytic	pass	0.044	0.044
ladder/02-booleans/009-near-tangent-overlap-1e-3	a cylinder r10 along X dipping 1e-3 mm into the top face, cut: a groove 1e-3 deep	analytic	pass	0.048	0.048
ladder/02-booleans/013-cut-across-cylinder-seam	a 10x4 notch through a cylinder r10 across its +X side (where the seam lies)	analytic	pass	0.050	0.050
ladder/02-booleans/021-holes-touching-at-a-point	two through holes r5 whose circles touch at one point (30, 20)	analytic	pass	0.055	0.055
ladder/02-booleans/012-tangent-along-circle-bowl	a blind hole r10 10 deep, then a sphere r10 centred on its floor: the floor disk vanishes exactly	analytic	pass	0.060	0.060
ladder/02-booleans/022-cylinder-grazing-a-hole-edge	a corner piece (square column minus a quarter disc r1.5, 0.0003 off the axis) cut out of a part with a blind r1.6 hole on the same axis: the tool's r1.5 face sits 0.1 mm inside the hole wall; 'no result'	analytic	pass	0.061	0.061
ladder/02-booleans/023-lips-1e-4-off-the-walls-joined	two half-annulus lips (r 4..5, from z=2 to 20) joined onto a stadium-ring base (z 0..2, r 3..5 arcs, centres 20 apart) with their cylinder walls 0.0001 mm off the base's: the lip cap touches the base top, leaving a 0.0001 mm crescent overhang. Layout is a hand-built variant of the PR's public reproduction	analytic	pass	0.132	0.132
ladder/02-booleans/024-wall-halves-merged-into-a-flange	the flange top annulus of a freshly revolved hub (z = 6, r 18..30) picked by a point and extruded 5 mm (the pick found a third of the face: "the selected planar face no longer exists")	analytic	pass	0.237	0.237
ladder/02-booleans/025-flush-chord-layers-joined	a join of flush layers: a disc r37 (z -1.2..0) carrying 15 of the 19 regions of a sketch of 18 chords (z -3.6..-1.2; four bands left out), on an annulus r35..37 (z -5.6..-3.6) joined to a disc of all the chord regions (z -8..-5.6): SMLib's result came back with 'loop encloses no (u, v) area' though both operands are valid	analytic	pass	1.355	1.355
ladder/03-analytic-profiles/001-extrude-rect-with-arc-end	a 60x40 profile with a semicircular end r20, extruded 20	analytic	pass	0.013	0.013
ladder/03-analytic-profiles/007-revolve-180-touching-axis	a 15x20 rectangle on the axis revolved 180 deg: a half cylinder	analytic	pass	0.014	0.014
ladder/03-analytic-profiles/006-revolve-partial-90	a 10x10 rectangle 10 mm off the axis revolved 90 deg	analytic	pass	0.016	0.016
ladder/03-analytic-profiles/008-extrude-slot	a slot (centres 40 apart, width 20) extruded 10	analytic	pass	0.023	0.023
ladder/03-analytic-profiles/003-extrude-tapered-circle	a circle r10 extruded 20 with a -5 deg taper (inward): a cone frustum	analytic	pass	0.050	0.050
ladder/03-analytic-profiles/002-extrude-annulus	an annulus r20/r10 extruded 15	analytic	pass	0.059	0.059
ladder/03-analytic-profiles/004-revolve-full-off-axis	a 10x30 rectangle 10 mm off the Z axis revolved 360 deg: a tube	analytic	pass	0.065	0.065
ladder/03-analytic-profiles/005-revolve-touching-axis-hemisphere	a quarter disk r20 with an edge on the Z axis revolved 360 deg: a hemisphere	analytic	pass	0.070	0.070
ladder/03-analytic-profiles/009-part-boss-and-slot	the running part: a revolved boss r8 h10 joined on the top, a slot 15x8 cut through the base	analytic	pass	0.124	0.124
ladder/03-analytic-profiles/010-revolve-horn-torus-270	the half disc of radius 14 on the far side of a diameter 14 mm from the axis (the full circle would touch the axis: a horn torus) revolved 270 degrees	analytic	pass	0.136	0.136
ladder/04-spline-profiles/005-loft-square-frustum	a loft between a 40 square at z=0 and a 20 square at z=30	analytic	pass	0.011	0.011
ladder/04-spline-profiles/001-extrude-bezier-arch	a profile closed by a cubic Bezier arch (control-point spline, 4 points), extruded 10	analytic	pass	0.015	0.015
ladder/04-spline-profiles/008-loft-square-to-circle	a loft from a 40 square at z=0 to a circle r10 at z=30	analytic	pass	0.027	0.027
ladder/04-spline-profiles/009-extrude-periodic-fit-spline	a closed periodic fit-point spline through 6 points, extruded 10	analytic	pass	0.035	0.035
ladder/04-spline-profiles/004-sweep-square-along-bezier	a 4x4 square swept along the same Bezier path	analytic	pass	0.042	0.042
ladder/04-spline-profiles/006-loft-circle-frustum	a loft between circles r20 at z=0 and r10 at z=30	analytic	pass	0.059	0.059
ladder/04-spline-profiles/007-loft-three-circles	a smooth loft through circles r20, r10, r20 at z = 0, 20, 40	analytic	pass	0.072	0.072
ladder/04-spline-profiles/002-revolve-bezier-profile	a profile with a Bezier side (r from 20 to 15 over z 0..30) revolved 360 deg about Z	analytic	pass	0.084	0.084
ladder/04-spline-profiles/010-part-bezier-window	the running part: a Bezier-arched window cut through the back wall	analytic	pass	0.131	0.131
ladder/04-spline-profiles/003-pipe-along-bezier	a pipe d4 along a planar Bezier path	analytic	pass	0.141	0.141
ladder/04-spline-profiles/012-loft-ribs-joined-to-a-rounded-pad	the same without the top flange: the join fails with 'boolean Union: no result'	analytic	pass	0.681	0.681
ladder/04-spline-profiles/011-crossing-pleated-loft-skins-joined	a join of two pleated skins (lofts between 24-pleat star outlines, less the same loft moved in 1.1 mm) that cross along a ring near their bottoms: truck panicked ('tolerance must be no less than 1e-6') or gave no result	analytic	pass	1.376	1.376
ladder/05-holes-and-taps/006-tapped-m6-through	an M6 tapped hole through: the tap drill d5 (major - pitch), cosmetic thread	analytic	pass	0.017	0.017
ladder/05-holes-and-taps/001-simple-through	a d10 through hole in the stock's top	analytic	pass	0.033	0.033
ladder/05-holes-and-taps/009-hole-0.5-from-edge	a d10 through hole whose wall is 0.5 mm from the end face	analytic	pass	0.034	0.034
ladder/05-holes-and-taps/010-hole-tangent-to-end-face	a d10 through hole tangent to the end face x=0	analytic	pass	0.036	0.036
ladder/05-holes-and-taps/003-drilled-blind-118	a d10 drilled hole 10 deep to the shoulder with a 118 deg point	analytic	pass	0.044	0.044
ladder/05-holes-and-taps/007-tapped-m8-blind	an M8 tapped blind hole 12 deep with a 118 deg drill point	analytic	pass	0.045	0.045
ladder/05-holes-and-taps/002-simple-blind-flat	a d10 blind hole 10 deep, flat bottom	analytic	pass	0.046	0.046
ladder/05-holes-and-taps/004-counterbore	a counterbored hole: d6.6 through, d11 x 6.4 counterbore	analytic	pass	0.051	0.051
ladder/05-holes-and-taps/005-countersink	a countersunk hole: d6.6 through, d12 x 90 deg countersink	analytic	pass	0.089	0.089
ladder/05-holes-and-taps/011-crossing-holes-steinmetz	two d10 through holes whose axes cross: vertical and along Y at z=10	analytic	pass	0.102	0.102
ladder/05-holes-and-taps/012-crossing-tapped-holes-offset	two M6 tapped holes (d5) crossing with axes 2 mm apart	analytic	pass	0.113	0.113
ladder/05-holes-and-taps/008-tapped-m5-into-curved-face	an M5 tapped hole drilled radially through a cylinder r20 lying along X	analytic	pass	0.130	0.130
ladder/05-holes-and-taps/013-part-holes	the running part: an M6 tapped through hole, an M5 tapped blind hole in the boss, a d3.3 hole down through wall and base	analytic	pass	0.280	0.280
ladder/06-threads/012-external-acme-3-4-6	a modelled 3/4-6 ACME thread (ASME B1.5, general purpose) on a 3/4 in shaft, six turns	analytic	pass	0.839	0.839
ladder/06-threads/013-external-s20x4	a modelled metric buttress S20x4 thread (DIN 513, 3/30 deg) on a d20 shaft, six turns	analytic	pass	0.945	0.945
ladder/06-threads/011-external-tr20x4	a modelled trapezoidal Tr20x4 thread (ISO 2904) on a d20 shaft, six turns	analytic	pass	0.956	0.956
ladder/06-threads/003-external-m10-partial-length	a modelled M10 thread over 15 of the 30 mm from the top end (from): it stops square in the middle of the face	analytic	pass	1.088	1.088
ladder/06-threads/015-internal-tr20x4-nut	a modelled internal Tr20x4 thread in a d16 (D1 = d - P) bore through a 40x40x24 block	analytic	pass	1.200	1.200
ladder/06-threads/014-external-buttress-asme-1.5-8	a modelled 1.5-8 buttress thread (ASME B1.9 basic profile, 7/45 deg) on a 1.5 in shaft, six turns	analytic	pass	1.347	1.347
ladder/06-threads/010-part-threaded-boss	the running part with a modelled M16 thread on its d16 boss	analytic	pass	1.462	1.462
ladder/06-threads/016-external-m10-left-hand	001's modelled M10 thread, left-handed: the same volume, turning the other way	analytic	pass	1.690	1.690
ladder/06-threads/019-external-tr40x14-p7-two-start	a modelled two-start trapezoidal Tr40x14(P7) thread (ISO 2904, ISO 2903) on a d40 shaft, three leads long	analytic	pass	1.831	1.831
ladder/06-threads/005-internal-m10-through	a modelled internal M10 thread in a d8.5 (tap drill) hole through a 30x30x20 block	analytic	pass	1.872	1.872
ladder/06-threads/006-external-m10-into-chamfer	a d10 x 30 cylinder with a 1 mm chamfer on top, then a modelled M10 thread over its cylinder face, running out through the chamfer	analytic	pass	1.920	1.920
ladder/06-threads/007-external-m10-at-filleted-shoulder	a modelled M10 thread on a d10 shaft whose root at the d16 shoulder has an r1 fillet: it stops clear of the fillet	analytic	pass	1.964	1.964
ladder/06-threads/001-external-m10-full	a modelled M10 thread over the whole of a d10 x 30 cylinder	analytic	pass	2.128	2.128
ladder/06-threads/004-external-m10-to-shoulder	a modelled M10 thread on a d10 shaft running down to a d16 shoulder: it stops clear of it, the collar whole	analytic	pass	2.144	2.144
ladder/06-threads/009-thread-runout-length	004's M10 thread run from the free top end, vanishing over a 3 mm (2 P) runout before the d16 shoulder	analytic	pass	2.203	2.203
ladder/06-threads/002-external-m10x1-fine	a modelled fine M10x1 thread over a d10 x 30 cylinder	analytic	pass	2.626	2.626
ladder/06-threads/017-external-m10-chamfered-tip	001's modelled M10 thread with ISO 4753's chamfered end at both free ends: a 45 deg cone down to the minor diameter, cut after the groove	analytic	pass	3.485	3.485
ladder/06-threads/008-multi-start-thread	a two-start M10 thread (lead 3, pitch 1.5) over a d10 x 30 cylinder	analytic	pass	3.706	3.706
ladder/06-threads/018-external-m10-both-hands	001's modelled M10 thread cut both ways: a right- and a left-handed groove crossing on a d10 x 30 cylinder	analytic	pass	7.756	7.756
ladder/07-fillets/015-corner-g2-patch	three r5 rounds at a corner with the g2 corner patch	invariants	not supported yet: step 2 (solid.fillet): invalid input: not supported yet: a fillet with G2 corner patches with the SMLib kernel	0.003	0.003
ladder/07-fillets/006-variable-r5-to-zero	a variable round on the top front edge, r5 at x=0 down to 0 at the x=60 vertex	analytic	pass	0.009	0.009
ladder/07-fillets/001-single-edge-r5	an r5 round on the stock's top front edge	analytic	pass	0.016	0.016
ladder/07-fillets/007-variable-r5-to-1e-3	a variable round on the top front edge, r5 down to 1e-3 mm	analytic	pass	0.018	0.018
ladder/07-fillets/011-chain-ending-at-corner	r5 rounds on two top edges meeting at a corner whose vertical edge stays sharp	analytic	pass	0.019	0.019
ladder/07-fillets/005-variable-r5-to-r1	a variable round on the top front edge, r5 at x=0 to r1 at x=60	analytic	pass	0.020	0.020
ladder/07-fillets/004-convex-and-concave-r5	an L block: r5 on its inner (concave) vertical edge and on an outer (convex) one	analytic	pass	0.021	0.021
ladder/07-fillets/009-corner-three-equal-r5	r5 rounds on the three edges meeting at the corner (60,40,20): a sphere corner	analytic	pass	0.023	0.023
ladder/07-fillets/008-constant-r1e-3	a constant 1e-3 mm round on the top front edge	analytic	pass	0.024	0.024
ladder/07-fillets/002-four-vertical-edges-r5	r5 rounds on the four vertical edges	analytic	pass	0.027	0.027
ladder/07-fillets/010-corner-unequal-r7-r3	an r7 vertical round at a corner, then r3 along a top edge, which runs on round the r7 arc to the other top edge	analytic	pass	0.037	0.037
ladder/07-fillets/016-corner-three-sequential-r5-r3-r7	rounds r5 and r3 on the two top edges at a corner, then r7 on the vertical edge under them: refused, the r7 cannot exist	invariants	pass	0.046	0.046
ladder/07-fillets/012-variable-into-rounded-corner	a vertical r5 round, then a variable round r1 -> r5 along the top back edge into it	analytic	pass	0.060	0.060
ladder/07-fillets/014-curved-edge-r2	an r2 round on the top edge of a cylinder r10 h20	analytic	pass	0.078	0.078
ladder/07-fillets/018-corner-three-sequential-r5-r3-r2	rounds r5 and r3 on the two top edges at a corner, then r2 on the vertical edge under them, run on up into the corner	invariants	pass	0.080	0.080
ladder/07-fillets/003-tangent-chain-r3	an r3 round all round the top of the box with r5 vertical rounds: a tangent chain of lines and arcs	analytic	pass	0.080	0.080
ladder/07-fillets/013-corner-setback	three r5 rounds at the corner (60,40,20) with setbacks of 8 mm along each edge	invariants	pass	0.117	0.117
ladder/07-fillets/017-part-rounds	the running part: r5 on the front vertical edges, r3 on the back wall's top front edge, r1 where the boss meets the top	analytic	pass	0.690	0.690
ladder/08-chamfers/005-corner-two-mitred-3	3 mm chamfers on two top edges meeting at a corner (mitred)	analytic	pass	0.008	0.008
ladder/08-chamfers/004-corner-three-equal-3	3 mm chamfers on the three edges meeting at a corner	analytic	pass	0.009	0.009
ladder/08-chamfers/003-distance-angle-5-30	a chamfer 5 mm at 30 deg on the top front edge	analytic	pass	0.012	0.012
ladder/08-chamfers/001-equal-5	a 5 mm chamfer on the top front edge	analytic	pass	0.012	0.012
ladder/08-chamfers/002-two-distances-5-3	a 5 x 3 chamfer on the top front edge	analytic	pass	0.024	0.024
ladder/08-chamfers/007-chamfer-then-fillets	a 3 mm chamfer on the top front edge, then r2 rounds on the front vertical edges that meet it	analytic	pass	0.029	0.029
ladder/08-chamfers/006-curved-edge-2	a 2 mm chamfer on the top edge of a cylinder r10 h20	analytic	pass	0.070	0.070
ladder/08-chamfers/008-part-chamfers	the running part: 1 mm on the boss top edge, 2 mm on the back wall's top back edge	analytic	pass	0.749	0.749
ladder/09-shells-and-offsets/007-offset-top-face-5	the stock's top face offset 5 mm	analytic	pass	0.016	0.016
ladder/09-shells-and-offsets/001-box-open-top-t2	the stock shelled 2 mm, open at the top	analytic	pass	0.017	0.017
ladder/09-shells-and-offsets/004-thin-wall-0.2	the stock shelled 0.2 mm, open at the top	analytic	pass	0.017	0.017
ladder/09-shells-and-offsets/003-tube-two-open-faces	the stock shelled 2 mm, open top and bottom	analytic	pass	0.018	0.018
ladder/09-shells-and-offsets/012-closed-shell-sealed-void	the stock shelled 2 mm with no face open: a closed body with a sealed void	analytic	pass	0.018	0.018
ladder/09-shells-and-offsets/009-shell-outside-t2	the stock shelled 2 mm outward, open at the top	analytic	pass	0.038	0.038
ladder/09-shells-and-offsets/006-shell-rounds-r1-thinner-than-t2	the box with r1 vertical rounds shelled 2 mm: the inner corners close sharp	analytic	pass	0.060	0.060
ladder/09-shells-and-offsets/008-offset-cylinder-wall-2	a cylinder r10 h20 with its side face offset 2 mm	analytic	pass	0.075	0.075
ladder/09-shells-and-offsets/002-cylinder-open-top-t1	a cylinder r10 h30 shelled 1 mm, open at the top	analytic	pass	0.102	0.102
ladder/09-shells-and-offsets/010-shell-under-rounded-top	the stock with r3 rounds on its four top edges, shelled 2 mm open at the bottom	analytic	pass	0.105	0.105
ladder/09-shells-and-offsets/014-drafted-box-with-rounds-shelled	a 120x80x40 box drafted 5 degrees with 4 mm rounds on the sloping corners, shelled 2 mm open at the top: the inner rounds' edges must lie on their faces (#3573 reports the same design)	analytic	pass	0.124	0.124
ladder/09-shells-and-offsets/005-shell-rounds-r5-t2	the box with r5 vertical rounds shelled 2 mm open at the top: the inner corners r3	analytic	pass	0.174	0.174
ladder/09-shells-and-offsets/013-dome-shelled-from-base	a dome r20 shelled 2 mm, open at its flat base: the rim is the circle r18 where the inner sphere meets the base plane	analytic	pass	0.236	0.236
ladder/09-shells-and-offsets/015-shelled-dome-ring-joined-back	a dome (a quarter disc r20 revolved) shelled 2 mm from its flat base, then the base ring (r 18..20) face-extruded 10 mm back into the dome as a join: ~120 s, then 'boolean Union: no result'	analytic	pass	0.922	0.922
ladder/09-shells-and-offsets/011-part-shell	the running part shelled 1.5 mm open at the bottom	analytic	pass	1.078	1.078
ladder/10-patterns-and-mirrors/007-pattern-bodies	a pin r3 h10 patterned 4 times at 10 mm as bodies	analytic	pass	0.031	0.031
ladder/10-patterns-and-mirrors/004-mirror-body-joined	a 30x40x20 half with a d10 hole mirrored about x=30 and joined: the faces at x=30 coincide	analytic	pass	0.067	0.067
ladder/10-patterns-and-mirrors/005-mirror-feature	a d10 hole in the stock mirrored about x=30 as a feature	analytic	pass	0.074	0.074
ladder/10-patterns-and-mirrors/001-rect-pattern-holes	a d5 hole patterned 3 x 2 at 20 mm in a 60x40x10 plate	analytic	pass	0.175	0.175
ladder/10-patterns-and-mirrors/003-overlapping-pattern-leaves-core	six r5 cuts patterned round a circle r6 in a disk r20: they overlap and cut a core free	analytic	pass	0.315	0.315
ladder/10-patterns-and-mirrors/002-circular-pattern-holes	a d6 hole patterned 8 times round a disk r30 h10	analytic	pass	0.351	0.351
ladder/10-patterns-and-mirrors/006-circular-pattern-counterbores	a counterbored hole (d5, d9 x 3) patterned 6 times round a disk r30 h10	analytic	pass	0.855	0.855
ladder/10-patterns-and-mirrors/008-part-vents	the running part with a d3 vent hole in its top patterned 4 times at 5 mm	analytic	pass	1.765	1.765
ladder/11-cumulative-parts/001-bracket	an L bracket: concave r5 round, 5 mm outer chamfer, a hole in each leg	analytic	pass	0.088	0.088
ladder/11-cumulative-parts/002-flange	a revolved flange and hub with a bore, six bolt holes, a hub chamfer and a hub-root round	analytic	pass	0.618	0.618
ladder/11-cumulative-parts/003-threaded-flange	the flange with a modelled M30 thread on its hub, between the round and the chamfer, and M8 tapped holes in the disk	analytic	pass	1.821	1.821
ladder/11-cumulative-parts/004-housing	the running part with every tier: back wall, boss, slot, spline window, tapped holes, rounds, chamfers, shell, vents, and a modelled M16 thread on the boss	analytic	pass	2.307	2.307