Printing and Finishing Mandalorian Armor: From Raw Print to Beskar

You have your files. Now comes the part that separates a recognizable costume from a jaw-dropper: printing it right and finishing it to look like actual metal. This article covers FDM settings for Mandalorian armor, scaling to your body, and the full finishing pipeline from raw print to beskar-quality surface.

Printer and Material Choice

FDM is the right tool for every structural piece in a Mandalorian build — helmet, chest, vambraces, pauldrons, knees, everything. Resin printing is brittle at wearable scale, heat-sensitive (your car on a convention day will warp a resin helmet), and unnecessarily expensive for large pieces. Use resin only for tiny details: clan emblems, small buckles, or tiny props. Every piece you’ll wear in this build is FDM.

• PLA+: Best balance of printability, stiffness, and sandability. Easier to finish than standard PLA. Good choice for most builders.
• PETG: Slightly more flexible and impact-resistant. Worth considering for pieces that take stress (knee guards, vambraces). Slightly harder to sand to a perfectly smooth finish.
• ABS: Strong and can be acetone-smoothed, but warps during printing and requires an enclosure. Not recommended unless you already have ABS experience.

Slicer Settings

• Layer height: 0.2mm for most pieces; 0.15mm for the helmet if you want to minimize sanding work
• Infill: 15–20% gyroid or cubic for body panels; 25–30% for the helmet and vambraces
• Wall count: 4 perimeters minimum; 5–6 for the helmet for durability
• Supports: Mandatory for the helmet. Use tree supports — they’re easier to remove and leave less scarring than grid supports inside the helmet cavity.
• Print speed: Drop to 80% of your normal speed for outer walls on any helmet print.

Scaling to Your Body

Default file scaling is rarely right for your measurements. Before printing the full helmet, print a test section — the chin section is a good choice — and measure against your head circumference. Scale the full file up or down from that test.

ArmorSmith Designer automates this: input your measurements and it calculates the correct scale factor for each piece. Galactic Armory’s FormFitter (currently in development) will handle this directly for GA files.

Post-Print: Joining Split Pieces

• Super glue + activator: Fast, strong, clean. Works for PLA and PETG.
• Epoxy: Slower cure, stronger bond. Good for high-stress joints like the helmet crown.
• Alignment pins: Most good file sets include alignment pin holes. Print the pins separately or use short sections of 1.75mm filament as dowels.

After joining, fill the seam with body filler (Bondo or equivalent), sand flush, and continue to the finishing pipeline.

Surface Prep and The Druj Method

1. Remove supports and clean the print. Use flush cutters for support stubs; a hobby knife for cleanup.
2. Fill seams and imperfections with body filler. Sand flat once cured.
3. Sand progressively: 120 grit to knock down layer lines → 220 → 400 for a smooth base.
4. Apply filler primer — two coats, letting each dry fully. Sand 400 grit between coats.
5. The Druj Method: Apply the texture technique to add subtle surface character that reads as cast metal rather than plastic. Full guide: The Druj Method.

Mandalorian Paint: Beskar Look

1. Base coat: Matte dark gray primer coat (this is your shadow color in recessed areas).
2. Silver base: Lightly airbrushed or brushed metallic silver over the primer. Leave the recesses dark.
3. Weathering: Use a silver metallic pencil or dry-brushed bright silver on edges and raised areas. Stipple darker paint randomly on flat surfaces for wear and scarring.
4. Optional battle damage: Small dents and scratches added with a sharp tool before painting, then highlighted with dry-brushed silver.
5. Topcoat: Matte or satin finish — fully matte for a more worn look, satin for the “new beskar” scenes.

Your armor is ready to wear — now you need a suit under it. Continue to Part 5: Soft Goods and Assembly.