Is this 3D model free to download?

Yes, Resealable Oil Quart Extension is free to download from Thingiverse. Open it in the free Thinger app, or use the "Download from Thingiverse" link to open the original listing by the creator.

Where do I download the STL file?

The download is hosted by Thingiverse. Use the "Download from Thingiverse" link on this page to open the original listing and grab the file, or save it to your print queue in the free Thinger app.

Designed by lounl, published on Thingiverse. Please credit the creator when sharing your print.

Can I print this at home?

Yes. This is a printable 3D model intended for home FDM and resin printers. Check the original listing for suggested print settings.

Resealable Oil Quart Extension

Source: Thingiverse by lounl

The Resealable Oil Quart Extension is a free printable 3D model from Thingiverse by lounl. I have an old airplane where the oil cap isn't really accessible and always ended up spilling oil inside the cowling when I added it. You can download the STL file from the original listing below and print it at home.

Open in Thinger (free) Download from Thingiverse

30 saves Source: Thingiverse Updated 2026-09-20

Tags: Resealable, Oil, Quart, Extension

About this model

I have an old airplane where the oil cap isn't really accessible and always ended up spilling oil inside the cowling when I added it. But I'd frequently only add a quarter of a quart or half a quart at a time. So if I used a normal funnel, it'd end up being a mess. In order to completely avoid a mess or waste, I wanted some kind of funnel that could be permanently attached onto the oil quart (securely) and capped off for the next use. I also wanted it to be small enough to fit inside of a gallon bag as a secondary container. Every existing product I tried either had too lose of a fit, or the cap wasn't secure enough to keep the oil in. So I designed my own. Also note I've specifically designed this to fit Aeroshell W100... I'm assuming other oil quarts are the same thread. It fits the top …

Frequently asked questions

Is this 3D model free to download?: Yes. Resealable Oil Quart Extension is free to download from Thingiverse. Open it in the free Thinger app, or use the "Download from Thingiverse" link above to open the original listing.
Where is the STL hosted?: The download is hosted by Thingiverse, not by Thinger. We link you directly to the original listing by lounl.
Who made this model?: Designed by lounl, published on Thingiverse. Please credit the creator when sharing your print online.
Can I print this at home?: Yes. This model is intended for home FDM and resin 3D printers. Check the original listing for suggested print settings like layer height and supports.

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