The quality of a print starts with the input files. A well-prepared model saves time and corrections after printing. Here is an overview of what is worth knowing before you send an enquiry.

Which format to send

  • STL, OBJ, 3MF: models for 3D printing. STL is the most widely used.
  • STEP: suitable if the model will be edited further in a CAD system or also used for CNC milling.
  • PDF, DXF, sketch, photo: if you do not have a model, we can create one. Dimensions and a description of the function will help.

What to check in the model

  • Closed volume: the model must not have holes in its surface. Such errors arise when exporting from some tools and cause problems during printing.
  • Scale and units: a model in millimetres may open in inches or metres in another program. State the size of the longest side of the part.
  • Thin walls and small details: every technology has a smallest printable detail. Very thin features may not print or may be fragile.
  • Overhangs: with FDM and SLA they need supports, which leave marks. Sometimes the model can be modified so that supports are not needed.

Part orientation

The direction in which a part is printed affects both its strength and its appearance. With FDM, a part is stronger along the layers, so highly stressed features should not be printed lying flat, where they could break between layers. We usually choose the orientation, but if you have a requirement for strength or a visible surface, let us know.

What to include in your enquiry

  • what the part is for and in what conditions (heat, moisture, outdoor environment, load),
  • the required material or colour, if you know it,
  • the number of pieces,
  • surface and finishing requirements,
  • whether function or appearance is more important.

If you do not have a model

Tell us what you need. We will create a model from your brief or, for an existing part, use scanning.

Tip: If you are not sure, send the model anyway. Before you confirm the quotation, we will check it and tell you what is worth changing.

Related:How to prepare your files →