Parametric Table/Chair Leg Riser/Extender

Material: PLA.
Walls/Perimeters: 4–5 (at least 1.6–2 mm).
Top/Bottom Layers: 5–6.
Infill pattern: Cubic or Gyroid.
Print orientation: flat on the base.

This is a parametric socket-style riser/extension for tables, chairs, or other furniture with cylindrical legs only.

It allows you to increase the height of furniture while keeping the legs safely locked into a socket.

raise_height (mm): The solid bottom thickness = how much you lift the furniture.
socket_depth (mm): How deep the furniture leg sits inside the riser (insertion length).
leg_diameter (mm): The diameter of the cylindrical furniture leg that goes inside the socket.
clearance (mm): Extra tolerance to ensure the leg fits (0.2–0.4 mm recommended for a well-calibrated printer).
contour_wall_thickness (mm): The thickness of the outer shell around the socket.

The required infill depends on how much weight the risers will support.

Assuming 4 cylindrical legs and 60 mm diameter risers:

Total furniture weight	Load per leg	Recommended infill	Notes
Up to 100 kg	~25 kg	20–25% infill	Enough for chairs or light tables
Up to 200 kg	~50 kg	30–35% infill	Balanced strength and material use
Up to 250 kg	~62.5 kg	35–40% infill	Safe for heavy tables/desks
300 kg+ (max stress)	~75 kg+	45–50% infill	Use PETG/ASA, add 5–6 walls

⚠ Note: Increasing infill beyond 50% does not significantly improve compression strength.

The walls and bottom thickness are more important for structural integrity.