Choosing Your First Model

Pick a first model that finishes in under 90 minutes and avoids supports, tiny details, and big warp-prone footprints. The goal is a predictable print that reveals whether your first layer, adhesion, extrusion, and cooling are basically working—without requiring advanced tuning.

TL;DR

Choose a small, flat-bottomed model that prints in 30–90 minutes with no supports and no tiny features; it should stick easily and let you judge first-layer quality and extrusion consistency right away.

Choosing Your First Model (Decision Matrix)Topic-specific diagram for the concept, checks, and tradeoffs in this lesson.Print time30–90 minSupportsNone or minimalFootprintSmall, centeredOverhangsGentle slopesThin featuresAvoid tiny text/pinsCornersAvoid big sharp plates
Use the matrix to pick a model that is fast, support-free, and forgiving—so your first print tests setup, not your troubleshooting skills.

Why your first model choice matters

On a first print, you are really testing fundamentals: bed adhesion, Z offset/leveling, steady extrusion, and cooling. A complicated model can fail for many reasons at once (supports, warping, tiny details), which makes it hard to tell what to fix. A simple model gives you a clean signal: if it fails, the printer setup needs attention; if it succeeds, you can move on confidently.

Good first-print traits (what to aim for)

  • Small footprint and low height (stable, less wobble)
  • Print time about 30–90 minutes (fast feedback)
  • One clear flat face to sit on the bed (easy adhesion)
  • Walls and features thicker than your nozzle width (more forgiving)
  • Simple overhangs only (no mid-air flat undersides)
  • Not too much retraction travel (reduces stringing issues)

Models to avoid at the start (common early failure traps)

  • Large flat plates with sharp corners (warp/lift is common)
  • Very tall, thin parts (wobble, layer shift, or detach)
  • Miniatures with lots of overhangs and tiny details (support + tuning heavy)
  • Articulated prints, print-in-place hinges, tight clearances (need flow and dimensional calibration)
  • Threads, snap-fits, and precision parts (need accurate extrusion and cooling)

Quick selection checklist (before you download or slice)

  • Orientation: Does it have an obvious flat face to place on the bed?
  • Overhangs: Are there any big “ceilings” or shelves that would print in mid-air?
  • Thin details: Are any walls/letters/pins smaller than your nozzle width?
  • Footprint: Is the base small enough to sit near the bed center with room to spare?
  • Time estimate: Does the slicer estimate under 90 minutes at normal settings?
  • Repeatability: Would you be okay printing it again after you change one setting?

Safe default model choices (reliable starters)

Pick something like a 20 mm calibration cube, a chunky keychain/tag with thick letters, or a simple small bracket/clip with straight walls. These shapes have a flat base, minimal overhangs, and finish quickly—perfect for spotting first-layer gaps, rough corners, or inconsistent extrusion without needing supports.