How to Design and Print Your First 3D Part: A Beginner Guide

<h2>Step 1 — Design Your Part</h2><p>Use <strong>FreeCAD</strong> (free) or <strong>Fusion 360</strong> (free for hobbyists). Model your part and export as .STL. Key FDM rules: minimum wall 1.2 mm, avoid overhangs beyond 45° without supports, add 0.2 mm clearance between mating parts.</p><h2>Step 2 — Choose Material</h2><p><strong>PLA</strong> — easiest to print, ideal for enclosures indoors below 50°C. <strong>PETG</strong> — moisture and chemical resistant, good for outdoor use. <strong>ABS</strong> — high-temperature tolerance but warps easily, needs an enclosure.</p><h2>Step 3 — Slice in Cura</h2><p>Open your STL in Ultimaker Cura. Recommended PLA settings: layer height 0.2 mm, infill 15% (display) or 40% (structural), print speed 50 mm/s, supports touching build plate only.</p><h2>Step 4 — Use Our Service</h2><p>No printer? Upload your STL on TT Electro's 3D Printing page, choose material, quantity, and colour. Quote within 4 hours. Lead time 2–3 business days.</p>