Files · 4 min read
Preparing your files for 3D printing
What to send so your quote is fast and accurate: formats, units, one part per file and the details that matter.
Clear files and a few key details are the difference between a quick quote and a long email thread. Here's what helps most.
Send one part per file If your design has several parts, export each one separately. That lets us orient each part for strength and surface quality, and quote quantities per part.
Choose an export format STL is the most widely supported format and is what our upload tool reads today. If you work in CAD, keep a STEP copy too — it preserves exact geometry and is useful if changes are needed later. You can mention STEP, 3MF or OBJ files in a quote request and we'll review them manually.
Know your units STL files contain numbers but no units. A part modelled at 50 mm and exported from an inch-based tool can arrive 25.4 times too large or small. Our viewer shows the size it calculates so you can confirm millimetres or inches before you submit.
Tell us what matters - Which faces are visible or cosmetic - Which features must fit other parts, and the mating dimensions - Loads, heat, moisture or outdoor exposure - Quantity and deadline
Check for common problems Holes in the mesh, overlapping shells and paper-thin walls are the most frequent issues. Our upload tool flags open edges and non-manifold geometry automatically; we'll review anything it can't decide.
General guidance for FDM printing. Results depend on your geometry, material and use — ask us about your specific part.