Models that print right the first time
Designs turned into printable STL files, with wall thickness, orientation and mesh checks done before you spend material. Repairs for broken models too. From €120. Owner to confirm this service before publishing.
- MESHClosed and manifold, normals facing out, no intersecting or zero-area faces.
- WALLSThick enough for your process: about 0.8 mm on a 0.4 mm FDM nozzle, two perimeters.
- ANGLESOverhangs beyond 45° chamfered, re-oriented or given supports you agreed to.
- SCALEReal millimetres in the STL, so the slicer does not open a 48 mm tree as 0.048 mm.
Flat branch undersides: four tiers need supports, about 5.9 cm³ of extra material to snap off and sand.example estimate, not slicer output
The printability check, with a fix for every failure
Every file goes through the 3D-Print Toolbox in Blender before it leaves my hands, plus a units check the toolbox does not do. This is what the report looks like for a broken spruce file. Apply the fixes and watch it turn green.
SolidNon-manifold and bad contiguous edges
14 non-manifold edgesThe mesh has holes or edges shared by more than two faces, so the slicer cannot tell inside from outside.
Make Manifold from the toolbox, close what is left by hand, then recalculate normals outside (Shift+N).
IntersectionsFaces that cut through each other
6 intersecting facesThe star was placed into the top tier as a separate shell. Some slicers print the overlap twice or leave gaps.
Join the two shells with a Boolean union so one closed surface remains.
DegenerateZero-area faces and zero-length edges
0 foundCollapsed faces confuse repair tools and slicers.
Nothing to fix in this file.
Passes as exportedDistortedNon-flat faces
0 foundQuads bent out of plane can be split the wrong way on export.
Nothing to fix in this file.
Passes as exportedThicknessWalls thinner than 0.8 mm
52 faces under 0.8 mmBranch tips taper to a knife edge that a 0.4 mm nozzle cannot draw, so they vanish in the slicer.
Round the tips to at least 0.8 mm, two perimeters, and move finer needles into surface relief.
Edge SharpVery sharp edges
0 foundRazor-thin ridges print as blobs or break off.
Nothing to fix in this file.
Passes as exportedOverhangFaces steeper than 45 degrees
128 faces over 45°Flat branch undersides hang in the air. They need supports that scar the surface the eye sees first.
Chamfer the undersides to 45°, as in the slice preview above, so the tree prints with no supports.
Units and scaleScene units, checked by hand
0.048 units tallThe scene is in metres, so the STL says 0.048 and the slicer reads 0.048 mm. STL files carry no units.
Set the scene to millimetres, apply scale (Ctrl+A), and export so the tree is 48 mm tall.
5 checks still fail. Each failure above has its fix next to it. Apply them to see the file pass.
The numbers I design to, by print process
Printable is not one rule. A wall that prints on a resin printer can fail on a 0.4 mm FDM nozzle, and powder-bed parts need no supports at all. Tell me the printer or the print service and the file is built to its limits.
| Process | Layer height | Thinnest wall I design | Overhangs | Clearance for parts that fit together | Watch out for |
|---|---|---|---|---|---|
| FDM filament PLA, PETG, ABS | 0.08 to 0.28 mm | 0.8 mm, two perimeters of a 0.4 mm nozzle | Up to 45° without supports; flat undersides need them | About 0.2 to 0.3 mm per side | Layer direction is the weak axis; orient load across layers, not along them |
| Resin MSLA and SLA | 0.025 to 0.05 mm | About 0.6 mm for supported walls | Supported almost everywhere; angle the part to avoid suction | About 0.1 to 0.2 mm per side | Hollow parts need drain holes, or trapped resin cracks the shell |
| Powder bed SLS nylon, via a service | Set by the service | Check the service's rules, often near 1 mm | No supports, the powder carries the part | As the service specifies | Hollow parts need escape holes so unfused powder can be removed |
typical values Rules of thumb from common printers and materials, not guarantees for yours.
When I would not take the job
File preparation is worth paying for when the print is expensive, repeated or for someone else. Sometimes you need a different person or nothing at all.
- 01The part carries load, seals or must meet a tolerance tighter than a few tenths of a millimetre. That is mechanical engineering with real CAD. I can prepare the engineer's export for printing, not design the part.
- 02Your slicer's own repair already fixes the file and the print looks right. Then print it; you do not need me for one hobby part.
- 03You want printed parts delivered. I do not run printers for clients. I prepare files for your printer or a print service you choose.
Send the STL that keeps failing, or the sketch you want printed. You get a fixed price within one working day.
Get a print-file quotePrint-file prices
Proposed from-prices in euros, excluding VAT 25.5 %. The written quote is fixed before work starts. See all prices.
File check and repair
You have an STL or OBJ that fails or prints badly.
- Full 3D-Print Toolbox check
- Holes closed, normals and intersections fixed
- Walls thickened where the process needs it
- STL in millimetres plus a short check report
Print-ready model
From a sketch, photos or dimensions, designed for printing from the first edge.
- Modelled in Blender to your measurements
- Chamfers and orientation planned for your process
- Split into parts with clearances if needed
- STL, the .blend source and the check report
Kit or series
Several parts that fit together, or one design in sizes.
- Pegs, sockets and tested clearances
- Size or text variants from one Geometry Nodes setup
- Small changes later at €95 an hour
If a delivered file fails the checks we agreed, I fix it at no charge. Send the slicer screenshot or the failed print photo and the file comes back corrected. owner to confirm
From broken file to a clean first print
Five steps. You know the printer; I make the file fit it.
- 1
Brief
The file or reference, the printer or service, the material and the size it must be.
- 2
Check and quote
A first toolbox run shows what is wrong, so the fixed price is based on the real file.
- 3
Repair or model
In Blender: manifold mesh, walls, chamfers, orientation and any split into parts.
- 4
Test slice
The file is sliced at your layer height to check the layer preview, supports and time.
- 5
Deliver
STL in millimetres, the .blend source and a one-page report of what was checked and changed.
Tool: Blender with the 3D-Print Toolbox. The same file I model in is the one I check, so a fix never gets lost in a format conversion. Why I work in Blender
Questions about 3D printing files
What makes a model printable?
A closed, watertight mesh with walls thick enough for your printer, overhangs it can build or support, and the right scale in millimetres. In practice that means no holes or non-manifold edges, walls of about 0.8 mm or more on a 0.4 mm FDM nozzle, and faces pointing outwards before the STL is exported.
Can you repair a broken STL?
Usually, yes. I import it into Blender, run the 3D-Print Toolbox checks, close holes, remove intersecting and zero-area faces, fix flipped normals and thicken thin walls. Badly damaged scans may need partial remodelling instead; if so, you get a price for that before any work starts. Repairs start from €120.
Do you print the parts?
No. I prepare and check the files, and you print them on your own printer or send them to a print service you choose. I can set walls, clearances and scale to that service's design rules, and note the orientation and layer height the checks assumed, so the first print is not a test.
Get a print-file quote
Attach the file or a sketch, and name the printer or service, the material and the finished size. You get a written fixed price within one working day.
- Fixed price based on a first check of the real file
- STL plus the .blend source, yours to keep
- A check report your printer operator can read
Prefer email? Write to [email protected], or use the contact page for a free quote on anything else.
Pikselipolku is an independent studio and is not affiliated with the Blender Foundation or any printer, slicer or print service maker.