Parametric Reinforced Barbecue Wheel (OpenSCAD)
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Parametric OpenSCAD barbecue wheel: 140 mm, 3 tread styles, lightened spokes, solid front face
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Informacje o modelu
- Źródło
- Printables
- Kategoria
- Outdoor & Garden
- Licencja
- Creative Commons — Public Domain
A fully parametric 3D-printable wheel for a barbecue, designed in OpenSCAD. The wheel is 140 mm in diameter and 70 mm wide, with an 8 mm hole for the mounting screw. It is built to be sturdy: a thick outer rim carries the tread, a reinforced hub surrounds the screw hole, and the side facing the barbecue support is lightened with thick spokes to save material and weight without giving up strength.
Main features
Outer tread with three selectable patterns: straight radial grooves, diamond cross-hatch and V-shaped chevrons.
Reinforced hub around the screw hole, slightly protruding on both sides.
Protruding collar (0.5 cm) on the inner side, the one resting against the support. It works as a spacer, so the wheel body does not rub directly on the bracket.
Lightened support side: pockets between thick spokes are carved only from the side facing the support.
Solid front face: the side opposite the support stays completely closed, so the wheel looks clean from the outside.
Inverted-cone recess on the front face, leaving a raised hub in the centre.
Geometry at a glance
Outer diameter: 140 mm
Wheel width: 70 mm
Screw hole: 8 mm
Collar on the support side: 5 mm high, 50 mm in diameter
Hub: 30 mm in diameter, protruding 2 mm on each side (total height with collar and hub: 79 mm)
Recommended material
ASA is the recommended choice. A barbecue wheel is exposed to sun, rain and heat from the grill, and ASA handles all three better than PETG:
Heat resistance: ASA softens at a noticeably higher temperature than PETG, which matters if the wheel sits close to the firebox or on hot ground.
UV and weather resistance: ASA is designed for outdoor use and does not yellow or become brittle in the sun like many other filaments.
Rigidity under load: it keeps its shape better under the weight of the barbecue.
PETG is a fine alternative for a wheel that stays away from the heat. It is easier to print (no enclosure needed, less warping, no strong fumes) and tough and water-resistant, but it can soften and deform if the wheel gets too hot.
Print tips for ASA: use an enclosure, keep the part cooling low, and ventilate the room. For either material, a high perimeter count and a fairly high infill will make the spokes and hub stronger.
Parameters
All parameters are at the top of the .scad file. Values are in millimetres unless stated otherwise.
Wheel body
Parameter | Default | Description |
|---|---|---|
| 70 | Outer radius of the wheel (140 mm diameter). |
| 4 | Radius of the screw hole (8 mm diameter). |
| 70 | Width of the wheel body (7 cm). |
Hub
Parameter | Default | Description |
|---|---|---|
| 15 | Radius of the reinforcing hub around the screw hole. |
| 2 | How far the hub protrudes beyond the wheel body, on each side. |
Support-side collar
Parameter | Default | Description |
|---|---|---|
| 25 | Radius of the protruding collar on the inner side. |
| 5 | Height of the collar (0.5 cm). It rests against the support. |
Lightening (spokes)
Parameter | Default | Description |
|---|---|---|
| 10 | Width of the solid outer ring, where the tread is cut. |
| 6 | Number of spokes. |
| 14 | Width of each spoke. Larger values mean thicker, stronger spokes. |
| 15 | Thickness of the solid layer that closes the front face (the side not facing the support). |
Derived values (do not edit): raggio_interno_cerchione = raggio_ruota − larghezza_cerchione, and profondita_alleggerimento = spessore_ruota − spessore_pieno_frontale (depth of the pockets carved from the support side).
Tread
Parameter | Default | Description |
|---|---|---|
|
| Tread pattern: |
| 36 | Number of grooves around the circumference (shared by all patterns). |
| 1.5 | Depth of each groove. |
| 3 | Width of each groove. |
| 45 | Tilt angle in degrees of the crossing grooves (diamond pattern only). |
The chevron angle is fixed at 30° inside the battistrada_chevron module.
Front cone recess
Parameter | Default | Description |
|---|---|---|
| 6 | Depth of the inverted-cone recess on the front face. |
| 55 | Radius of the cone opening ( |
Render quality
Parameter | Default | Description |
|---|---|---|
| 150 | Number of facets for curved surfaces. Lower it for faster previews. |
Tread patterns
Radial – straight grooves parallel to the wheel axis. Good all-round grip and the simplest to print, but dirt can get stuck in the grooves.
Diamond – two sets of diagonal grooves crossing each other. Better grip in every direction, well suited to smooth surfaces such as tiles and concrete.
Chevron – V-shaped notches. More aggressive, meant for grass or gravel.
Notes
Change the parameters at the top of the file and OpenSCAD rebuilds the whole model.
The hole is 8 mm: adjust
raggio_foroif you need clearance for your screw.Check the preview in OpenSCAD before slicing, and choose the print orientation that suits your printer.