How to Make an Epoxy Resin Planet Night Light

Materials & Tools

• Epoxy resin (Part A) and hardener (Part B) — follow manufacturer ratio (common: 1:1 or 2:1)
• Pearlescent mica powders, glow-in-the-dark powder, or alcohol inks (colors: blue, purple, green, gold, etc.)
• Clear silicone spherical mold or sphere lamp mold
• Small LED module (battery or USB)
• Disposable mixing cups, stir sticks, syringes or small funnel
• Nitrile gloves, respirator mask, safety goggles
• Heat gun or kitchen torch (for removing bubbles)
• Sandpaper (400/800/1200 grit) and polishing compound
• Wooden base or stand (optional)

Preparation & Mixing (15–30 minutes)

1. Clean the mold thoroughly; apply mold release if desired.
2. Measure Part A and Part B precisely per product instructions; start timing after mixing.
3. Stir slowly and thoroughly for 1–3 minutes, scraping sides and bottom to avoid unmixed resin.
4. Divide mixed resin into small cups and tint with mica, glow powder, or alcohol ink to create multiple colors.

Layering & Pouring to Create Planet Textures (30–60 minutes, depending on layers)

1. Pour a thin clear base layer (about 15–25% of mold volume). Use a heat gun to pop bubbles. Let it partially set (not fully cured).
2. Add colored layers: slowly inject or pour different tinted resins in rings, swirls, or spirals to mimic planetary bands and clouds. Use syringes or a spoon for control.
3. Add glitter, metallic flakes, or glow powder in a middle layer for “star dust.” Don’t over-add to preserve translucency.
4. After each layer, remove surface bubbles with the heat gun and allow the surface to tack slightly before next pour.

Curing & Demolding (24–72+ hours)

1. Place the filled mold in a dust-free, vibration-free area at stable temperature (ideal 20–25°C / 68–77°F).
2. Initial demold is often possible at 24 hours (depends on resin). Full hardness may require 48–72 hours or longer.
3. Demold carefully. Sand any imperfections starting with 400 grit, progressing to 800 then 1200 grit. Polish to a glossy finish.

Installing the Light & Finishing

1. If using a hollow or partially hollow sphere, install the LED module into the cavity or mount LED in the base and create an access hole.
2. Secure the LED and wiring; test before sealing. Seal access points with clear resin if needed.
3. Attach a wooden or metal base to hide wiring and stabilize the lamp.

Safety & Tips

• Work in a well-ventilated area and wear gloves, mask, and eye protection.
• Follow exact A/B mix ratios — incorrect ratios cause sticky or soft cures.
• Pour in thin layers for thick pieces to control heat buildup and avoid excessive exotherm.
• Test small color mixes and glow powder concentrations before committing to a full piece.
• For stronger glow, use high-quality phosphorescent powder and charge under bright light.

Variations & Ideas

• Use glow-in-the-dark center core for a daytime-charged night glow.
• Create semi-transparent planets or embed tiny models/rocks for a mini landscape.
• Make a floating display using a clear rod and base for a levitating effect.