STUFFv0.1

KidsCleanCar speed-knob childproof cover — friction-fit over the lower flange.

models/kidscleancar_knob_cover.scad

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models/kidscleancar_knob_cover.scad

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Presets

Flange OD (grip target)mm

4452

Flange height above deck (grip band)mm

2.54

Centre knob ODmm

2633

Knob height above flangemm

48

Screw-head proud height above flangemm

04

Bore radial clearance over flangemm

0.20.6

Knob cavity radial clearancemm

0.82.5

Clearance over knob top (Z)mm

13

Clearance over screw heads (Z)mm

13.5

Skirt-bottom gap above deckmm

01

Number of crush ribs

48

Rib interference past flange edgemm

0.10.5

Rib tangential widthmm

12.5

Wall / roof thicknessmm

23.5

Top outer-edge chamfermm

02

Pry recess at the rim (coin/fingernail)

Pry recess width (tangential)mm

816

Pry recess height up the skirtmm

25