Study guide — what to focus on

This module is curated and advanced — the teaching is a top free course (linked in the card above); our job is to point you at the right things, make you prove it, and certify you. It builds on FDM materials & calibration: you can already get a clean first print — now we push toward parts that have to hold up.

The plan

1. Watch the course (the card above). It walks the resin (SLA/MSLA) workflow end to end. You don't need to memorise it — aim to understand the ideas below.
2. Focus on these — they're what the check tests and what decides whether a functional part actually works:
   • FDM vs resin — FDM is anisotropic (weak between layers, so orientation matters for strength); standard resin is finer, smoother and more accurate but often brittle. Pick the process for the job.
   • Resin types & safety — tough/engineering resins for load-bearing parts; liquid resin is an irritant, so nitrile gloves, eye protection, ventilation.
   • Orientation & supports — tilt to cut peel/suction force, keep support marks off critical faces, and never leave unsupported islands.
   • Post-processing — wash off uncured resin, then UV cure to full strength (over-curing embrittles); for FDM, annealing trades some shrink/warp for strength and heat resistance.
   • Tolerances & threads — design for shrinkage; use heat-set inserts or tapped holes instead of trusting as-printed threads.
3. Prove it in Forge (next section) — design a precise functional part and reason about how you'd print it.
4. Take the K-Check to earn your certificate.

Why this connects to building real products

A first print proves the printer works; a functional part proves you understand the material. In Forge, when you describe a mechanical part — a snap-fit clip, a bracket with a bore — the same questions from the course decide success: which process (FDM for tough structure, resin for accuracy and detail), which orientation carries the load, what tolerance the mating feature needs, and what post-processing brings it to full strength. That reasoning — spec → process → print → finish — is exactly what turns a Forge design into a part you can actually put under load.

Time to apply it. The course taught you how process choice, orientation, tolerances and post-processing decide whether a part is merely printed or actually functional.

Send the prompt below in the Forge 3D part designer to generate a small precise part — a snap-fit clip or a bracket with a bore — then reason it through: would you run this in FDM (tough, but mind the layer direction under load) or resin (accurate and smooth, but choose a tough grade), how would you orient it so the load isn't pulling layers apart, and what post-processing (wash/cure, or an insert for that hole) gets it to full strength? That mapping — design ↔ how you'd really print it — is the whole point.