GM 20218853 Molding Clip
Created 8 days ago
Description
What it's for
Replacement wide trim molding retaining clip for 1981–1987 Buick Regal 2-door models (including Limited and Grand National). Designed to replace GM part #20218853, it secures the vinyl top and side wide molding directly to the roof and side pillars.
Dimensions
- Width: 44.5 mm (1.75 inches)
- Height: 23.2 mm (0.915 inches)
- Base Profile: 1.6 mm sheet thickness
Assembly
- The clip slides sideways over the factory body weld studs, locking in place via the 15-degree center tang.
- The side wings feature stress-relief slits and 35-degree downward-angled locking barbs. These flex inward as the metal trim presses down, then snap outward into the rolled inner lip of the molding to maintain constant spring tension against the body.
- Must be printed in PETG, ASA, or ABS. Standard PLA will shatter under installation pressure or warp in the sun.
Images
More like this
Explore more in Automotive, RC & Hobby →
Cristal 10mm Tubo 40mm Caja Sump
Caja de decantación y filtrado mecánico para instalación en el sump del acuario, diseñada para tubería de bajada de 40mm y calcetín estándar de 100mm. El enganche trasero asienta directamente sobre el borde del cristal (hasta 10mm de grosor) y utiliza un sistema de raíles prolongados y pasadores. Esto permite colgar el cuerpo principal completamente por debajo del borde del cristal del sump, dándote margen para ajustarlo exactamente al nivel de agua que necesites. Especificaciones de encaje Tubo de bajada: Paso libre de 42mm en la tapa para tubo estándar de 40mm. Filtro mecánico: Aro portacalcetín a 140mm de altura, compatible con calcetines de 10cm / 4 pulgadas. Cristal del sump: Garganta del colgador diseñada para grosores de hasta 10mm. Desborde: Ventanas de alivio perimetrales a 155mm de altura para evitar desbordes generales si se satura el calcetín. Tornillería: Sistema de anclaje mediante pasadores integrados en el soporte; no requiere tornillería extra.
Skimmer Inlet Mesh Cap
What it's for A friction-fit cap designed for the Octo Reef Classic 110-S skimmer nozzle. It features a hexagonal mesh face to maintain water flow while keeping snails out of the inlet, and solid walls to grip the fitting securely. Dimensions Inner diameter: 32 mm Total height: 20 mm Mesh openings: 5 mm circumscribed hexagons (roughly 4.3 mm flat-to-flat) Wall thickness: 2 mm Print notes The model is oriented to print upside down with the mesh resting on the bed, requiring zero supports. An interior chamfer on the open end helps it slide smoothly onto the nozzle. PETG is recommended for longevity in aquarium environments.
5/16x14 Cue Joint Protectors
A matched set of joint protectors for pool cues using the 5/16x14 piloted joint standard, heavily used by Schon and similar makers. Includes a female cap to protect the exposed butt pin, and a male plug to seal the shaft insert. Both feature fluted outside edges for easy threading and unthreading. Remix Hooks Cue Diameter: Default is 21.5mm OD. Thicker cues might want 22mm; older cues might sit closer to 21.2mm. Clearance: The female thread (butt protector) is oversized by 0.6mm, and the male pin undersized by 0.2mm to survive FDM printing tolerances. Dial these in depending on your printer's flow rate. Pilot Recess: The butt protector has a 13.5mm diameter x 3.5mm deep recess to clear a standard Schon pilot collar. Grip Profile: The 4mm semi-circle edge flutes can easily be swapped for a knurled mask or flat-cut hex sides.
Electric Guitar Jack Plate
A 3D-printable replacement output jack plate, styled after the standard oval 'football' and pill-shaped plates used on many electric guitars. Modelled slightly thicker than a standard stamped metal plate to ensure strength when printed in plastic. Length: 48mm Width: 26mm Screw Spacing: 37mm (center-to-center) Jack Hole: 10mm (fits standard 1/4" guitar jacks) Tip: If your guitar body has a pronounced curve where the jack mounts, you can briefly warm the printed plastic with a hairdryer or heat gun to gently form it to the exact radius of the wood before screwing it down.
Truncated Annular Aerospike Nozzle
Standard bell nozzles are a rigid compromise—they only hit peak efficiency at one specific altitude, meaning they waste fuel everywhere else. The aerospike solves this by turning the engine inside out. The exhaust plume expands against the central spike on the inside and the atmosphere itself on the outside, automatically adjusting its own expansion ratio as pressure drops. This is a functional model of an annular aerospike, heavily optimized for FDM printing. It uses a mathematically derived 1.5-power-law curve for the central plug, which efficiently redirects the radial flow from the combustion chamber into pure axial thrust. Engine Specs Throat Gap: 2 mm annular clearance around the base of the spike. Truncation: The spike is cut at 80% of its theoretical ideal length. This flat base eliminates dead weight while retaining roughly 99% of the full-spike efficiency, thanks to base-pressure recirculation. Support Structure: 6 internal struts carry the outer cowl load across the combustion chamber. Printability: Fully print-in-place with no supports required. The base sits flat, and the steepest overhang in the combustion section is well within safe limits.
li only
A sloped-console enclosure for a custom battery power box. The case features a sloped front panel for mounting a DSN-VC288 volt/amp meter and a generic battery level indicator, positioning them at an ergonomic viewing angle. Outputs: Four 14 mm barrel jacks on the front panel. Inputs: One 14 mm barrel jack and a 17×12 mm power switch cutout on the rear. Internals: A segregated 70×60 mm battery compartment with retaining walls. Assembly: Four M3 corner bosses meant for heat-set inserts, securing a drop-on top plate.