name = "steve/lead-screw"
version = "1.0.0"
runtime = "steve"
license = "MIT"
summary = "Trapezoidal lead screw envelope: Tr8, Tr10, Tr12 and Tr16, leads 2 to 8 mm, any length."
description = """Trapezoidal lead screw (T8, Tr10, Tr12, Tr16) as a plain envelope at the major diameter, for assemblies: axis \
along Z, centred on the origin. The thread is not modelled, as in the library's threaded rods. See the README."""
tags = ["lead-screw", "trapezoidal", "tr8", "motion", "metric"]

[parameters.size]
type = "choice"
default = "Tr8"
choices = ["Tr8", "Tr10", "Tr12", "Tr16"]
label = "Nominal diameter"

[parameters.lead]
type = "number"
default = 2
min = 1
max = 12
unit = "mm"
label = "Lead"
description = "Advance per turn. Names the screw; it doesn't change the envelope."

[parameters.length]
type = "number"
default = 300
min = 10
max = 3000
unit = "mm"
label = "Length"