3D Printing & Manufacturing Blog
Technical articles on 3D printing, 3D scanning, molds and manufacturing from CT3D Group, Vietnam.
FDM vs. Resin 3D Printing: 9 Criteria, Tolerances & Cost
FDM vs. resin 3D printing compared on 9 criteria: tolerance, surface, strength, heat resistance, cost, lead time and post-processing, plus an 8-scenario guide.
Statue Restoration with 3D Scanning & 3D Printing: 6 Steps
Statue restoration with 3D scanning and 3D printing: non-contact scanning, mesh repair, rebuilding lost parts, large resin prints, composite casting, painting.
3D Printing Accuracy & Tolerances: ±0.02–0.3 mm Fit Guide
3D printing accuracy and tolerances by technology (FDM, SLA, DLP, SLS, MJF, SLM): error sources, fit clearance tables, hole compensation, threads and snap-fits.
Design for Metal 3D Printing (DfAM): 45° Rule, Holes, Lattices
Design for metal 3D printing (DfAM): the 45° overhang rule, teardrop holes, thin walls, powder escape holes, lattices, CNC allowance and an SLM file checklist.
Student Project Model 3D Printing: Cost per Gram & Deadlines
Student project model 3D printing: FDM vs. resin by discipline, per-gram pricing (PLA from 650 VND/g), 7 ways to save, file fixes and a deadline-safe…
What Is SLS 3D Printing? Laser Sintering of Nylon Powder
What is SLS 3D printing? How laser sintering of plastic powder works, the thermal window, 80–120 micron layers, ±0.05–0.15 mm tolerance, materials and uses.
Product Display Models: Appearance Prototypes That Look Real
How to make a product display model: choosing print technologies per part, CMF color matching, clear parts, assembly, common mistakes and lead times.
FDM 3D Printing Materials: PLA, ABS, PETG, ASA, TPU, Nylon & CF
Compare FDM 3D printing materials: PLA, PETG, ABS, ASA, TPU, nylon and carbon fiber by heat resistance, toughness, moisture, UV stability and use case.
Architectural Model 3D Printing: Scale, Thickness & Cost
Architectural model 3D printing: choosing 1:50–1:500 scale, minimum wall thickness, preparing SketchUp/Revit files, FDM vs. resin, and cost per gram.
Metal 3D Printing Post-Processing: Annealing to Plating
Metal 3D printing post-processing step by step: depowdering, stress relief, wire EDM, heat treatment, CNC of mating faces, bead blasting, polishing and plating.
MJF PA12 3D Printing: How It Works, ±0.05 mm, Design Rules
MJF PA12 3D printing explained: how Multi Jet Fusion works, ±0.05 mm accuracy, no supports, design rules, post-processing and when to choose it over FDM…
Silicone Molds From 3D Prints: Silicone Types & Mold Design
How to make a silicone mold from a 3D print: master prep, tin vs. platinum silicone, block, split and glove molds, silicone calculation and 10–100…