Is this 3D model free to download?

Yes, Thread test plugs M12 to M42 free - check the fit before printing a screw-in funnel is free to download from Cults3D. Open it in the free Thinger app, or use the "Download from Cults3D" link to open the original listing by the creator.

Where do I download the STL file?

The download is hosted by Cults3D. Use the "Download from Cults3D" 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 AMPERELAB3D, published on Cults3D. 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.

Thread test plugs M12 to M42 free - check the fit before printing a screw-in funnel 3D printable model by AMPERELAB3D

Thread test plugs M12 to M42 free - check the fit before printing a screw-in funnel photo 1

Thread test plugs M12 to M42 free - check the fit before printing a screw-in funnel photo 2

Thread test plugs M12 to M42 free - check the fit before printing a screw-in funnel

Source: Cults3D by AMPERELAB3D

The Thread test plugs M12 to M42 free - check the fit before printing a screw-in funnel is a free printable 3D model from Cults3D by AMPERELAB3D. What it is Three short threaded studs per size (M12x1.5 to M42x1.5), same thread as the screw-in oil funnels, in the three clearance steps 0.2 / 0.3 / 0.4 mm on one grip bar. You can download the STL file from the original listing below and print it at home.

Open in Thinger (free) Download from Cults3D

30 saves Source: Cults3D Updated 2026-09-27 Filament: 60 g License: PRIVATE-USE · non-commercial Category: Tools & Workshop

Tags: thread test, gewindetest, test plug, probierstopfen, metric thread, metrisches gewinde, m22x15, m20x15, fit test, free, kostenlos, screw in funnel, einschraubtrichter, oil funnel, öltrichter

About this model

What it is Three short threaded studs per size (M12x1.5 to M42x1.5), same thread as the screw-in oil funnels, in the three clearance steps 0.2 / 0.3 / 0.4 mm on one grip bar. Screw into the filler neck, note the step that grips cleanly. 13 sizes. Dimensions (measured on the CAD solid) 13 models. Height 8 mm, largest width 80.3-175 mm, weight 9.3-60.4 g of PETG if printed solid (an upper bound; with 3 perimeters the slicer prints the thin walls solid anyway). Space needed on the bed (as printed): up to 168 x 56 x 8 mm. The dimension sheet in the download and in the second image lists every size. Why this one Notches on the bar mark the step: one notch = tight, three = loose. Just over three thread turns (5 mm studs) are enough for the test - check the fit before you print the funnel. Printi…

Frequently asked questions

Is this 3D model free to download?: Yes. Thread test plugs M12 to M42 free - check the fit before printing a screw-in funnel is free to download from Cults3D. Open it in the free Thinger app, or use the "Download from Cults3D" link above to open the original listing.
Where is the STL hosted?: The download is hosted by Cults3D, not by Thinger. We link you directly to the original listing by AMPERELAB3D.
Who made this model?: Designed by AMPERELAB3D, published on Cults3D. 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.