Sliding Sleeve#

A telescoping column joint, drawn parked

Names: sliding_sleeve

When to use#

Use sliding_sleeve for a telescoping member: an inner post riding in a bored outer sleeve (a music-stand column, an adjustable leg), drawn parked at one declared height. It is a static pose, not a travel: nothing is swept (ADR-0075 does not apply) and each part keeps one transform. Keywords: telescope, sleeve, column, adjustable height, slip joint.

Syntax#

joinery sliding_sleeve name=<Name> {
    extension <mm>     // required: how far the inner member stands out of the mouth
    clearance <mm>     // the bore is this much wider than the member (total, ADR-0012)
    depth     <mm>     // optional: a blind bore; absent or 0.0 bores the whole sleeve
}
join joint=<Name> male=<Inner>@<Foot> female=<Sleeve>@<Mouth>

• Foot is a mark on the inner member's inserted end face, Mouth one on the sleeve's open end face, each normal pointing out of its own wood: they face each other.
• The author places both parts; the joint checks the pose: the foot is on the mouth's axis (sleeve-axis), and the member is placed so it stands exactly extension out (sleeve-pose). sleeve-extension: nothing of the member is inside. sleeve-depth: the bore is shorter than the engagement or the sleeve. sleeve-fit: no wall is left.
• The bore is the member's section plus clearance, so the member stands in air and there is no clash to exempt; a mis-posed member still clashes and is reported.
• Both members stay in the cut list. The join gap check skips it (a clearance fit).

Pitfalls and diagnostics#

• extension is declared and the placement is yours: change stand_height and the inner member's length and pos together, or sleeve-pose says they disagree.
• The inner member's section is read off its Foot face; a member turned a non-right angle about the column's axis against the sleeve is not synthesised (sleeve-axis, unsupported).
• A blind bore leaves wood at the sleeve's foot (remaining-wall warns when thin).

Example#

examples/music_stand.kdl: ColumnSleeve on the spider, ColumnInner parked stand_height - sleeve_len out, carrying the head.

See also#

• travel — a swept motion; this joint is a parked pose.
• hardware-mounting — the clamp knob, as a round proxy.
• tongue-and-groove — another one-off joinery kind's page.

Names#

Every name this page declares, how the example library uses it, and the shortest real use.

sliding_sleeve#

joinery kind; value in 1 of 116 examples (1 uses).

Shortest real use, from music_stand.kdl:

joinery sliding_sleeve name=Telescope {
    extension column_extension
    clearance glue_clearance
    depth     bore_depth
}

Related terms#

• Sliding sleeve