Less mystery.
More making.

Measure three directions and write down the units. For a replacement, include the part it connects to—not just the broken piece.

Record hole diameters, center-to-center spacing, wall thickness, and any surfaces that must line up. Photos with a ruler help explain scale; a dimensioned sketch is clearer for exact fit.

STL describes a triangle mesh without a standard unit setting. A value of 25 might mean millimeters in one workflow and inches in another. Confirm the intended units before printing.

3MF can store units and additional model information. The free designer exports both formats in millimeters. Keep an editable project file too, so dimensions remain easy to change.

Two parts with identical dimensions may not slide together. Clearance is the space you intentionally leave between mating surfaces.

Start with a small test piece when fit matters. The right clearance depends on the material, printer, orientation, shape, and how tight or loose the connection should feel.

Filament printing builds a part one layer at a time. Curved surfaces and slopes can show those layers more clearly than flat faces.

Tell us which faces will be visible and whether appearance or function matters most. Orientation and finishing choices can change the look of the final piece.

Choose a template, name your project, and change one dimension at a time. Use front and top views to understand what moved.

Save a version before making a big change. Download STL or 3MF when you are ready, or use Request this print to carry the model into an inquiry. Downloading never places an order.

Explain what the part is, what it needs to do, and what it must fit. Include quantity, dimensions, preferred colors, and any important use conditions.

A model is helpful but not required. A sketch, reference link, or photos can start the conversation. Pricing, feasibility, material, and timing are confirmed before work begins.