STL file sites: search 6 platforms and preview your model in 3D
Type what you need and get a link to the search on Thingiverse, Printables, MakerWorld, Thangs, Cults3D and GrabCAD, plus a way into our libraries. Then drop in your own STL or OBJ file, turn it in 3D and see its size, volume and overhang. The app screen is in Bulgarian.
Opens with a free account.
- 6 platformsand a way into our libraries
- STL and OBJa 3D preview you turn with the mouse
- 14 printerschecks whether the model fits
- mm and cm³size and volume of the model
STL file sites and this page
STL file sites are places where people upload and download models for 3D printing; STL is the format a slicer cuts into layers. This page is one search box for six such places: Thingiverse, Printables, MakerWorld, Thangs, Cults3D and GrabCAD, plus a way into the EduFacturing libraries.
The six platforms belong to other companies; their names are trademarks. Their results appear on their own sites, and they decide whether a model can be downloaded.
If you already have a file, drop it in here. Size, volume, overhang and triangles are worked out in your browser; the file goes to the server only if you save it.
What a search across six platforms does
Searches one word on six platforms
Type for example “gridfinity bin” and press “Търси” (Search). Each of the six platforms gets a card with a “Виж модели” (View models) button that opens its search in a new tab; the libraries card opens their start page.
Tells you which platform to use
In the “Edi те насочва” (Edi guides you) section you describe what you look for and press “Питай Edi” (Ask Edi). Edi is told to pick one of seven platforms and say why, in Bulgarian; an answer off the list shows only the explanation.
Shows your STL or OBJ in 3D
Drop the file in, turn the model with the mouse and read the size in mm, the volume in cm³, the overhang in % and the triangle count.
Checks whether it fits
You pick one of 14 printers and one of 9 materials. You get rule-based warnings and, on request, Edi's opinion on orientation, supports and material. The file and the review can be kept in your library.
When you need a model search and an STL preview
The page helps when you look for a ready model or want to know what is inside a downloaded file.
You need a ready model
Type one word and open the search on several platforms side by side.
You downloaded an STL and are not sure it fits
Pick your printer and read whether the model fits or only when turned by 90°.
You need an engineering part
Our libraries are described in the app as bearings, profiles and fasteners, and GrabCAD as engineering STEP files.
You want an opinion before a long print
Edi looks at overhang, proportions, size, material and printer and gives a verdict, orientation, supports and tips.
How an uploaded STL file is measured
The numbers come from the file itself, and the warnings from four rules.
The file is read in the browser
An STL or OBJ becomes a mesh of triangles; from it come the size (read as millimetres), the volume and the overhang area.
Rules give the warnings
An overhang of 5% or more, a tall and narrow model, a proportion above 8:1 and a model that does not fit the printer each give one warning. The 45° angle, the 3-to-1 ratio and the 8:1 proportion come from the EduFacturing rules for FDM; the 5% limit is set in the app.
Edi explains the numbers
Only on pressing “Питай Edi за печатимостта” (Ask Edi about printability) do the numbers, material, printer and warnings go to the server, not the file. The AI returns an assessment.
| Applies to | Formula | Meaning |
|---|---|---|
| Overhang | overhang % = area of downward-facing faces tilted more than 45° from vertical ÷ total area · 100 | faces on the bed are not counted; warning from 5% |
| Tall and narrow model | height > 3 · the smaller of the X and Y sizes | risk of vibration and lifting off the bed |
| Volume | V = |Σ a · (b × c)| ÷ 6 | a sum over the triangles in mm³; shown in cm³ |
Preview an STL online for your printer
One word for every platform
The word is typed once and passed to the search of every platform.
The file stays in your browser
Size, volume and overhang are worked out on your side; the file goes to the server only when you press “Запази в библиотеката” (Save to library).
A fit check for 14 printers
Fit is checked against a list of 14 models from Bambu Lab, Prusa, Creality, Elegoo, Anycubic and Sovol.
The page holds no other people's models and shows none of their results: links open their own sites. The labels “теглене позволено” (download allowed) and “само линк” (link only) are the app's note about a platform, not a model; read a model's terms on its site.
It accepts STL and OBJ and reads sizes as millimetres. It does not measure wall thickness. The volume is exact only for a closed model, and with holes in the mesh it is a rough guide. Edi is an AI, is for FDM printing and does not see the file; its question and the numbers pass through the EduFacturing server.
Questions about STL file sites
Where to find STL files for a 3D printer?
On platforms such as Thingiverse, Printables, MakerWorld, Thangs, Cults3D and GrabCAD. You type one word and get a link to the search on each, plus a way into our libraries. Downloading happens on the platform's site, on its terms.
How to open an STL file?
Drop it in the “Внеси и прегледай модел” (Import and view a model) box. A 3D preview opens that you turn and zoom with the mouse, with the size, volume, overhang and triangle count below. It accepts STL and OBJ.
Will my model fit my 3D printer?
You pick a printer from the list of 14 and the app compares the model's size with its build area. It tells you if the model does not fit or fits only turned by 90°. Other printers are not checked.
Is the app in English?
No. The screen and Edi's answers are in Bulgarian. You can type search words in English. The MakerWorld and Cults3D links open their English pages, and the libraries link opens the Bulgarian /biblioteki/ page.
How much does searching and previewing models cost?
Access is with a free account. The platforms the links lead to have their own terms and prices.
3D model platforms are free with an account
Pro costs 15 EUR a month and opens 45 Pro tools.
Related tools
STL analyzerSTL analyzer online: check volume, size in mm, holes, weight and material cost by infill. Free, 3 times a day without an account. The file stays in the browser.
3D printer finderWhich 3D printer should I buy? Answer five questions about goal, budget and material and get up to three printers priced in euros. Free account.
3D file converter3D file converter online in Pro, 15 EUR a month: OBJ to STL, GLB to STL and more, with unit and scale change. STEP for CAD goes through a server.
3D printing design rules3D printing design rules: 32 rules for wall, overhang, bridge, hole and clearance for FDM, resin, SLS and metal, with a citation for each. Free online.
Find a model and preview it before you print
Opens with a free account.