December 24, 2025
Description
This 4-Cylinder & 6-Cylinder Aviation Spark Plug Holder was designed to fit the Tempest and Champion plugs that I had to test with. The handle is printed separately from the holder which also allows you to print them using different colors. I used PETG for both the holder and the handle so it would better handle any hot spark plugs you may insert into the holder. When printing the holder I have a color change on the last 2 layers for the lettering and outlines, these are in the sliced files as well.
Print Info
Filament: Inland PETG+ Silver from Micro Center, SKU 151605 for the holder and Prusament Prusa Orange PETG for the lettering and handle
Printer: Prusa CORE One with HF 0.4mm nozzle
Layer Height: 0.2 mm, Balanced Profile
Top Layers: 5, Bottom Layers:4
Perimeters - Holder: 2
Perimeters - Handle: 2, but then for heights 70 - 87.2 the sliced files have the perimeters set to 5 for the upper plug-in connector
Infill: Grid, 10% for the Holder and 15% for the Handle
Supports: Support on build plate only. This is just a small amount inside the base where there is a 5mm overhang to match the 32mm inside diameter of the hose.
Adhesion: None
License:
Creative Commons — Attribution — Noncommercial
9