CAD design for 3D printing
There is no shortage of free models on the internet. There is a shortage of models of the specific thing you need, at the right size, that will survive being printed. This is the modelling step: someone turns your intent into geometry that a machine can actually make.
Describe what the object has to do, supply whatever you have — a sketch, photographs, dimensions or a similar object — and name the critical measurements: what it must fit onto, and with how much clearance. Everything else can be decided during modelling. What cannot be decided later is the dimension that has to match something in the real world.
Make a mesh yourself
This is the same Dreamli workspace: text or an image to a 3D mesh, with OpenAI for reference images and Meshy for the model. There it was free; here you buy Digital Credits. The examples below are real previous results. A generated mesh is not a dimensioned engineering file.
Create a robotic-looking golden horse ornament. Add a round handle near the neck (for the weight). Incorporate the wheels (Texan Wire Cadillac wheels). Remove the wheels at the bottom of the legs. Make the handle smaller and place it slightly higher on the neck. The horse doesn’t need to stand on a base.
Create a golden robot reindeer. Keep the tail short. With a saddle and blinders. Show Texan Wire Cadillac wheels at the top of the legs.
A previously generated sample model from the Dreamli workspace.
3D print estimate
Choose what you want printed. The form then asks for the details relevant to that route.
Estimate, not a quote · shipping €10 and packaging €7 included, except with pickup or free delivery within the municipality of Groningen (temporary offer) · confirmed after assessment
From
€163.87
incl. 21% VAT · €135.43 excl. VAT
Filament only: €0.63 · 25 g × €25/kg
Breakdown lines exclude VAT. The final price follows assessment of the file or image, geometry, tolerances, failed-print risk, material availability and application. Electrical components are agreed per construction. Certification and safety-critical parts are outside this estimate.
Discuss your idea or partFrom model to part
The CAD model on one side, the printed result on the desk on the other. The engraving in the side wall was cut into the model, not added afterwards.
Customer review on Trustpilot
“Ik wist zelf eigenlijk niet veel van 3D-printen en had vooral een idee van wat ik wilde. Sina luisterde goed naar mijn wensen en liet me vervolgens verschillende mogelijkheden zien. Hij nam echt de tijd en stuurde meerdere modellen door totdat we iets vonden waar ik echt enthousiast over was. …”
ShortenedReview in Dutch
Read the full review on TrustpilotA visual mesh, a print-ready model and editable engineering CAD answer different needs. Agree source files, export formats, use rights and revision scope before work starts. Missing views or conflicting dimensions remain explicit questions, not hidden design decisions.
If printing is included, use the agreed revision to assess the critical shape or connection. Record the observation separately from the proposed change. New functions and changed main dimensions need an explicit scope decision.
A model can be geometrically perfect and still be a poor print. Wall thickness against the nozzle or laser spot, overhang angles and where supports will scar the surface, layer direction against the direction of load, clearance for parts that must slide or snap together, shrinkage on the long axis — these are decided in the model, not at the printer.
A sketch with dimensions is the fastest. Photographs of an existing object plus a scale reference work well for shapes that need to fit something. A verbal description works when the object is genuinely new. And an existing file — downloaded, inherited or exported from the wrong software — often needs repair or rebuilding rather than modelling from scratch.
A model built with real features and relationships can be re-dimensioned later; a model built as a frozen shape has to be redone. Where a part is likely to change — a size variant, a different mount, a second version after the first is tested — the extra care during modelling is what makes the second version cheap.
A well-specified single part with clear critical dimensions is a contained job. An open-ended shape with 'see what looks good' is not, and neither is a part whose requirements change after the first print. The quote states what is included, how many revision rounds it covers and what a further change costs.
Quoted separately and confirmed in writing before anything starts. An enquiry becomes an order once application, scope, price, schedule and responsibility are agreed.
Start an enquiry describing the object and its purpose. Modelling is quoted as its own work, separately from printing, so you can see what each part of the job costs.
It depends on complexity, how well the requirements are specified and how many revision rounds are expected — not on file size or triangle count. A clear brief with critical dimensions is the cheapest brief.
It can produce mesh geometry, and for decorative objects that can be enough. It is unreliable for parts that must fit something real, where clearances and wall thicknesses decide whether the part works. A generated file is a fine starting point and a poor finished part.
What the object must do, what it must fit, the measurements that cannot be wrong, and any sketch, photo or file you already have.
A mesh describes a surface as triangles and is what printers consume. A CAD model describes features and relationships, so dimensions can be changed later. Which you need depends on whether the design is finished.
Often. Repair, rescaling and thickening are usually cheaper than remodelling — though when a file is badly built, rebuilding it can be the faster route, and we say which it is before starting. For a model from a game, film or app that you want printed, see making a 3D model printable.
Ownership and use of the resulting files are recorded in the proposal before work starts, rather than left implicit.
Describe what the part has to do, what you already have, how many you need and when. Only uncertain geometry uses the technical review.