39 mm Automatic Watch Case (Rounded Lugs)

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Bounding box: 41.0 × 46.0 × 9.8 mm
Engine: Precision B-rep
Parameters: 18
Published: September 30, 2026

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The prompt

can you round the lug more

Parameters

Name	Value	Range
Case Diameter	39 mm	20 – 60
Case Thickness	9.8 mm	4 – 20
Movement Cavity Dia (Miyota 9015)	26.2 mm	15 – 35
Crystal Seat Dia	31 mm	20 – 42
Crystal Seat Depth	1.2 mm	0.4 – 3
Caseback Opening Dia	32 mm	20 – 42
Caseback Opening Depth	1.5 mm	0.4 – 4
Lug-to-Lug	46 mm	30 – 62
Lug Width (Strap Gap)	20 mm	8 – 26
Lug Thickness	4 mm	2 – 8
Lug Height	6.5 mm	3 – 12
Lug Bottom Z	1.5 mm	0 – 5
Lug Corner Radius (vertical)	1.5 mm	0.2 – 1.9
Lug Top/Bottom Round	1 mm	0.2 – 3
Spring Bar Hole Dia	1.8 mm	1 – 3
Crown Diameter	5.5 mm	3 – 9
Crown Length	3 mm	1 – 8
Bezel / Caseback Rim Radius	0.8 mm	0.2 – 1.5

Every value above is a live dimension. Open a model like this in the editor and each one becomes a slider you can drag before exporting.

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