Is this 3D model free to download?

Yes, Heat-Set Insert Boss Trials –Parametric Pilot Hole is free to download from MakerWorld. Open it in the free Thinger app, or use the "Download from MakerWorld" link to open the original listing by the creator.

Where do I download the STL file?

The download is hosted by MakerWorld. Use the "Download from MakerWorld" 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 Kotilaine Design, published on MakerWorld. 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.

Heat-Set Insert Boss Trials –Parametric Pilot Hole 3D printable model by Kotilaine Design

Heat-Set Insert Boss Trials –Parametric Pilot Hole photo 1

Heat-Set Insert Boss Trials –Parametric Pilot Hole photo 2

Heat-Set Insert Boss Trials –Parametric Pilot Hole photo 3

Heat-Set Insert Boss Trials –Parametric Pilot Hole

Source: MakerWorld by Kotilaine Design

The Heat-Set Insert Boss Trials –Parametric Pilot Hole is a free printable 3D model from MakerWorld by Kotilaine Design. ABOUT THE MODELAn M3 or M4 thread name does not tell you the outside size of a heat-set insert. You can download the STL file from the original listing below and print it at home.

Open in Thinger (free) Download from MakerWorld

30 saves Source: MakerWorld Updated 2026-11-07 Print time: 17m Filament: 5 g License: SDFL · non-commercial

Tags: heat set insert, threaded insert, insert boss, insert fit test, pilot hole, electronics enclosure, threaded insert test, hole size test, parametric, openscad

About this model

ABOUT THE MODELAn M3 or M4 thread name does not tell you the outside size of a heat-set insert. Measure the widest knurled outer diameter and full length of your own insert, then generate a series of pilot holes in bosses of the same outside size. Each D label is the straight CAD bore diameter, not the thread size or measured printed hole. The included example assumes a hypothetical 4.50 mm OD × 4.00 mm long insert and tests D3.900–D4.300. These are trial values, not a universal recommendation.MAIN FEATURESFive bosses with the same default 10.50 mm outside diameter.Default 5.00 mm deep blind bore, 1.50 mm solid floor and no entry chamfer.Adjustable measured insert dimensions, pilot range and boss diameter.Optional through-hole, entrance chamfer or measured headed-insert counterbore.PRINTIN…

Frequently asked questions

Is this 3D model free to download?: Yes. Heat-Set Insert Boss Trials –Parametric Pilot Hole is free to download from MakerWorld. Open it in the free Thinger app, or use the "Download from MakerWorld" link above to open the original listing.
Where is the STL hosted?: The download is hosted by MakerWorld, not by Thinger. We link you directly to the original listing by Kotilaine Design.
Who made this model?: Designed by Kotilaine Design, published on MakerWorld. 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.