Crew Brief

The Gold Skeleton Mask

Casting flexible gold bones for Gustav Mahler's ghost · A Second Chance music video
Prop Build Guide

What we're making

12–15 bone-shaped pieces that are flat on the back, bone-shaped on the front, painted metallic gold, and slightly flexible so they conform to Phillip's face. Our makeup artist will attach them with liquid latex on shoot day.

The trick: silicone candy molds shaped like bones. They're open-faced, so every casting comes out flat-backed automatically. We pour a material in, pop it out, rub gold on it. That's the whole build.

silicone bone mold + resin / glue casting material + Rub 'n Buff gold = gold bone, flat back
The whole recipe in one line.

The plan: cheap test first

Phase 1 — This order (~$30)
Order just the mold + gold rub. We already have a hot glue gun — hot glue casts beautifully in silicone molds and flexes nicely. We make one test bone, gold it, and check how it looks on camera and how it flexes against a face.

Phase 2 — Only if the test passes (~$50)
Order the proper casting resin (Smooth-Cast 45D) and run off all 12–15 pieces, plus spares. If the hot-glue bones actually look great on camera, we may skip Phase 2 entirely and just make them all from glue.

🛒 Order 1 — place this now

ItemNotesEst.
Skeleton bone silicone molds The bone-shaped candy mold set Ammon found. Open-face = flat backs. $10–14
Rub 'n Buff — Antique Gold Small metallic wax tube. Get Antique Gold (or Gold Leaf for a brighter gold). One tube does everything. $8–10
Order 1 total~$20–25
Sizing check before you click buy: candy-mold bones run small (2–4 inches). That's right for brow / cheek / jaw pieces on a face. If the listing's bones look tiny (under 2″), also grab a "large bone silicone mold" from resin-craft listings — same workflow.

🛒 Order 2 — only after the test passes

ItemNotesEst.
Smooth-On Smooth-Cast 45D (trial size) Semi-rigid urethane resin. Cures bone-hard but thin pieces flex. Trial kit makes dozens of bones. $40–50
Order 2 total~$40–50

Whole-project budget: roughly $60–75 total (we already have the glue gun, gloves, cups, and stir sticks).

Phase 1 — the hot glue test

1

Wash and dry the mold

Warm soapy water, rinse, dry completely. Any water left in the cavities will make bubbles and pits in the casting.

2

Fill a bone cavity with hot glue

Get the glue gun fully hot. Start at one end of the bone cavity and fill slowly in one continuous pass — pushing the nozzle down near the silicone helps avoid trapped air. Slightly overfill, then drag a popsicle stick across the top to level the flat back.

slow continuous fill, then level the back with a stick
Placeholder diagram — swap for a real photo once we cast the first one.
3

Cool fully, then peel out

Wait 10–15 minutes (or a few minutes in the freezer). Flex the mold and the bone pops right out. Trim any wispy glue strings with scissors.

4

Rub 'n Buff it gold

Squeeze a pea-sized dab onto a fingertip (wear a glove) or soft cloth. Rub a thin layer over the whole bone, let it sit a minute, then buff with a clean soft cloth until it shines. Thin coats beat thick ones — build up 2 coats if needed. It dries to the touch fast; give it a few hours before heavy handling.

soft cloth thin coat on → wait a minute → buff to a shine
Placeholder diagram — the buffing is weirdly satisfying.
5

The test

  • Hold it against a cheekbone — does it flex to follow the curve?
  • Film it in the kind of light we'll shoot in — does the gold read as metallic on camera?
  • Flex it hard a few times — does the gold crack or rub off?

Text Ammon photos/video. If it passes, we might just make all 15 from hot glue and be done for $25. If the glue feels too floppy, too melty-looking, or the finish is wrong → Phase 2.

Phase 2 — casting the real set (if needed)

1

Set up

Work on cardboard or wax paper in a ventilated space (garage/open window). Gloves on — uncured resin shouldn't touch skin. The mold needs no release spray; urethane doesn't stick to silicone.

2

Mix small batches

Smooth-Cast 45D is two bottles, Part A + Part B, mixed 1A : 1B by volume (equal amounts — confirm on the label). Pour equal amounts into a cup and stir briskly for ~30 seconds, scraping the sides. You have about 2–3 minutes of working time, so mix only enough for 3–4 bones per batch (a few tablespoons).

3

Pour and level

Pour in a thin stream from a few inches up (helps bubbles break). Fill each cavity just to the brim, then drag a stick across for a flat back. It turns from clear to opaque white as it kicks — that's normal.

4

Demold and repeat

Pieces pop out in ~30 minutes. Re-pour immediately — the mold is instantly reusable. An afternoon gets you all 15 plus a pile of spares. Let everything cure 24 hours before painting or skin contact.

5

Gold, same as before

Rub 'n Buff every piece — thin coat, buff, second coat if needed. Do the flat backs' edges too (any sliver visible past the latex should be gold, not white).

Safety notes: mix resin with ventilation and gloves; don't use the kitchen molds for food afterward; fully cured resin (24 hr) is inert and fine near skin — the makeup artist's liquid latex is what actually touches the face.

Handoff to the makeup artist

Budget summary

PhaseWhatCost
Order 1 (now)Bone mold set + Rub 'n Buff gold~$20–25
Order 2 (if needed)Smooth-Cast 45D trial kit~$40–50
On handGlue gun, glue, gloves, cups, sticks$0
Worst case total~$75
Best case (hot glue passes the test)~$25

Questions → Ammon. Gustav thanks you in advance. 💀✨