A resin heart mould tutorial is one of those projects that looks complicated from the outside but is genuinely beginner-friendly once you understand a few key steps. The 4-inch heart shape is compact enough to cure without overheating, large enough to embed florals or foils, and just the right size for gifting — which is why it sells so well during Karva Chauth and the wedding season running from October through February.
Whether you want to make a functional coaster, a wall hanging, or a gift piece to sell at a craft fair, the process is largely the same. What changes is your colour palette, what you embed, and how you finish the surface. This guide walks you through every decision, from pouring your first layer to packaging the final piece for gifting.
If you are completely new to working with epoxy, it is worth reading our article on How to Choose the Right Resin Ratio for Your First Project: 1:1 vs 2:1 Explained for Indian Beginners before you start. Getting the ratio right is the single most important step in any resin cast.
Quick Answer: What You Need to Know Before You Start
- Use a 1:1 or 2:1 epoxy resin for a 4-inch heart mould — not UV resin, which struggles with thick pours.
- Mix your resin for a full 3–4 minutes, scraping the sides and bottom of the cup.
- Pour in two layers if you are embedding flowers or foils — a base layer first, then embeds, then a top layer.
- Demould after 24–36 hours but allow a full 72 hours before sanding or gifting.
- For Karva Chauth gifts, deep red, rose gold, and ivory palettes sell fastest.
- For wedding season, blush pink with gold foil or white with dried florals are the top performers.
Choosing Your Mould: Why the 4-Inch Heart Is the Sweet Spot
The 4" Heart Mould from Shrebhavi is a flexible silicone mould, which means your cured piece pops out cleanly without any mould release spray — though a light coat never hurts if you are embedding sharp objects like glitter or metal charms.
At 4 inches, the mould holds roughly 80–100 ml of mixed resin depending on the depth. That volume cures comfortably without generating excessive heat, which is a real concern in Indian summers. If you want to go bigger, the 5" Diamond Cut Heart Mould gives you a faceted surface that catches light beautifully — great for wall pieces but slightly trickier for coasters since the textured back is uneven.
If you want to branch out into a gift set, the Heart Box Mould pairs perfectly with the 4-inch heart — you can make a matching lid and base that looks like a premium jewellery box, ideal for wedding favours.
Materials You Need for a Resin Heart Coaster at Home
Here is a straightforward list for one to four pieces. Scale up proportionally.
- Epoxy resin (1:1 or 2:1 ratio) — 100 ml mixed per mould
- Silicone mixing cups (at least two)
- Silicone stirring sticks or wooden craft sticks
- Mica powder in your chosen colours (1–2 shades per piece)
- Gold or rose gold metallic foil sheets
- Dried flowers or pressed botanicals (fully dried — fresh flowers cause yellowing)
- Isopropyl alcohol (90% or above) for popping bubbles
- Heat gun or lighter for surface bubbles
- Nitrile gloves and a well-ventilated workspace
- Sandpaper: 400, 800, 1500, 2000 grit for finishing
- Resin polish or automotive compound for the final shine
Best Colour Palettes for Wedding Season and Karva Chauth Resin Heart Pieces
Colour is what makes or breaks a resin heart wall piece design. The good news is that mica powders blend predictably in epoxy, so you can test small batches before committing to a full pour.
Karva Chauth Palettes
Karva Chauth gifts lean into traditional romance. Think deep jewel tones and metallics that feel festive without being garish.
- Deep Red + Rose Gold: Mix a crimson mica into one cup and a rose gold mica into another. Pour the red first, then swirl in rose gold at the edges. The result looks like molten garnet.
- Maroon + Antique Gold: A slightly muted maroon with antique gold flecks gives a traditional feel that suits older gifting demographics.
- Burgundy + Pearl White: Elegant and feminine. The pearl white mica creates a soft glow against the dark base.
Wedding Season Palettes
Wedding season runs from November through February in most of India. Buyers want pieces that look expensive but are priced accessibly as favours or gifts.
- Blush Pink + Gold Foil: The most popular combination. Pour a blush base, let it partially gel (about 2–3 hours), then press torn gold foil onto the surface before the top coat.
- Ivory + Dried White Florals: Minimal and sophisticated. Works beautifully for destination wedding aesthetics.
- Dusty Rose + Copper: Trending in 2025–26. The copper mica has a warm, earthy tone that photographs well on social media.
- Navy + Silver: Less common but striking. Suits groom-side gifts and corporate wedding favours.
| Occasion | Base Colour | Accent | Embed Suggestion | Finish |
|---|---|---|---|---|
| Karva Chauth | Deep Red / Crimson | Rose Gold Mica | Gold foil flakes | High gloss |
| Karva Chauth | Maroon | Antique Gold | Dried rose petals | Gloss with cork base |
| Wedding (Bride) | Blush Pink | Gold Foil | Dried baby's breath | High gloss |
| Wedding (Neutral) | Ivory / Cream | Pearl White Mica | Dried white flowers | Satin / matte |
| Wedding Favour | Dusty Rose | Copper Mica | Small dried leaves | Gloss + personalised tag |
Dry Flowers Embedding in Heart Resin Mould — and Other Ideas That Work
Embedding is where most beginners make mistakes. The number one rule: everything you embed must be completely dry. Any moisture — even from a flower that looks dry — will cause cloudiness, bubbles, or long-term yellowing inside the cast.
Dried Flowers and Botanicals
Rose petals, baby's breath, lavender, and marigold petals all press and dry well. Silica gel drying gives you better colour retention than air drying. Avoid thick stems — they trap air and create ugly voids in the resin.
Place your florals face-down in the mould before pouring if you want them visible on the top (which becomes the front of the coaster). If you want them suspended in the middle, pour a base layer, wait for it to reach a gel stage (roughly 3–4 hours depending on your resin brand and room temperature), lay the florals, then pour the top layer.
Foils and Flakes
Gold, silver, and rose gold foil flakes are the easiest embed for beginners. Tear small pieces and drop them into the wet resin. They float and settle naturally — no placement needed. The randomness actually looks intentional and beautiful.
Glitter and Mica Chunks
Fine glitter works best in the base layer. Chunky glitter or mica flakes can be added to the top layer for a textured, dimensional look. Avoid mixing both in the same layer — it gets muddy.
Photographs and Printed Paper
For personalised Karva Chauth gifts, you can embed a printed photo or a handwritten note. Seal the paper with a layer of Mod Podge or clear nail polish on both sides first — otherwise the resin will bleed into the paper and make it transparent or wrinkled.
If you want to make a wall piece with a photo, the Heart Hanging Photo Frame Mould is designed exactly for this — it has a built-in frame border and a hanging hole already moulded in, which saves you the finishing step of drilling.
Step-by-Step Pouring Process for a Resin Heart Coaster
This is for a two-layer pour with embedded florals. If you are doing a single colour with no embeds, skip to Step 5.
- Prepare your workspace. Cover your table with a silicone mat or plastic sheet. Make sure the surface is level — use a spirit level if needed. An uneven surface means uneven resin depth.
- Measure your resin. For a 4-inch mould, measure 40 ml of Part A and 40 ml of Part B (for 1:1 resin). If you are using 2:1 resin, measure 67 ml of Part A and 33 ml of Part B. Always measure by volume unless your brand specifies weight.
- Add mica powder to Part A. A small pinch — roughly 0.5 grams — is enough for 80 ml of resin. Mix thoroughly in Part A before adding Part B.
- Combine and mix. Pour Part B into Part A and stir slowly for 3–4 minutes. Scrape the sides and bottom of the cup. Fast stirring introduces bubbles. Slow and steady is the goal.
- Pour the base layer. Fill the mould about halfway. Torch or spritz isopropyl alcohol over the surface to pop bubbles. Cover loosely with a cardboard box to keep dust out.
- Wait for gel stage. After 3–4 hours, the base layer should feel tacky but not wet. This is when you add your embeds — florals, foil, photos.
- Mix and pour the top layer. Use fresh resin. Pour slowly over the embeds. Pop bubbles again with a torch or alcohol spritz.
- Cover and cure. Leave undisturbed for 24 hours minimum. Demould gently after 24–36 hours. The piece will still be slightly flexible — that is normal. Full hardness takes 72 hours.
If your resin comes out sticky after curing, do not panic — read our article on Why Your Resin Is Still Sticky After 24 Hours — and How to Fix It Before You Ruin the Piece to diagnose and fix the issue before it sets permanently.
Coaster vs Wall Piece: What Changes in the Process
The mould and pour process is identical. The differences come after demoulding.
For a Coaster
- Sand the back flat using 400 grit, then 800 grit wet sanding.
- Apply self-adhesive cork sheet to the back — this protects the table surface and gives the coaster a professional look.
- Polish the front to a high gloss using resin polish or a car finishing compound.
- The piece should sit flat without rocking. If it rocks, sand the high spots down.
For a Wall Piece or Hanging
- You can drill a small hole at the top using a 3 mm drill bit with a slow speed setting. Drill through water (wet drilling) to prevent cracking.
- Thread a jute rope, satin ribbon, or gold chain through the hole.
- Alternatively, use the Heart Hanging Photo Frame Mould which already has the hanging slot built in — no drilling needed.
- For a resin heart wall hanging idea for Karva Chauth, add a tassel in red or maroon at the bottom for a festive touch.
Resin Heart Piece Finishing Techniques for Gifting
A well-finished piece is what separates a craft-fair seller from someone who looks like a professional maker. These finishing steps take an extra hour but add significant perceived value.
Wet Sanding for Clarity
Start with 400 grit sandpaper under running water. Work in circular motions. Move up through 800, 1200, 1500, and finally 2000 grit. The piece will look cloudy and scratched at each stage — that is normal. The final polish step brings back the clarity.
Polishing
Apply a small amount of resin polish or automotive finishing compound with a soft cloth or a buffing wheel. Buff in circular motions until the surface is mirror-clear. This step is what makes buyers gasp when they see the piece.
Top Coat for Extra Depth
If you want extra depth and a domed look, apply a thin layer of fresh epoxy resin over the polished surface. This is called a flood coat or dome coat. It self-levels and gives a thick, glass-like finish that is difficult to achieve through polishing alone. Mix only 10–15 ml and spread it with a gloved finger or a foam brush.
Packaging for Gifting
- Wrap in tissue paper, then place in a kraft box.
- Add a small card explaining the piece — resin is food-safe once fully cured, but not recommended for hot beverages directly on the surface.
- For wedding favours, add a personalised tag with the couple's name and date.
For more creative gifting ideas using silicone moulds, our article on Creating Unique Monsoon Decor: A Step-by-Step Guide to Using Silicone Molds with Resin has some great inspiration for seasonal gifting beyond the standard coaster.
Safety Notes for Working with Epoxy Resin
Epoxy resin is safe when handled correctly. Here are the non-negotiable precautions.
- Always wear nitrile gloves. Epoxy resin is a skin sensitiser. Repeated skin contact without gloves can cause an allergic reaction that gets worse with each exposure.
- Work in a ventilated space. Open windows and doors. A fan blowing air outward is better than one blowing toward you.
- Do not use food containers for mixing. Dedicate silicone cups and sticks to resin work only.
- Keep children and pets away during the pour and the first 24 hours of curing.
- Dispose of mixed resin waste properly. Let leftover mixed resin cure fully before throwing it away — liquid epoxy should not go into drains or bins.
- In Indian summers, resin cures faster and can overheat in thick pours. For tips on managing this, see our article on Deep Pour vs Thin Pour Epoxy in Indian Summers: Why Your Resin Overheats in May and What to Do About It.
Frequently Asked Questions
Can I use UV resin instead of epoxy resin for the 4-inch heart mould?
UV resin is not suitable for a mould this size. UV light cannot penetrate through a thick cast, which means the inner layers will remain uncured and sticky. UV resin works well for very thin pieces — pendants, keychains, and bezels under 5 mm. For the 4-inch heart mould, stick with a two-part epoxy. Our comparison article on UV Resin vs Epoxy Resin for Small Moulds: Which One Actually Works Better for Keychains, Pendants, and Jewelry in Indian Humidity? explains this in detail.
How long does a resin heart mould take to cure completely?
Most standard epoxy resins are demould-ready in 24–36 hours. However, full cure — meaning the piece is hard enough to sand, polish, and use — takes 72 hours. Some resins say 24-hour full cure on the label, but in Indian humidity conditions, giving it 72 hours is always safer. Do not try to speed up curing by placing the mould in direct sunlight; this can cause yellowing and warping.
My dried flowers turned brown inside the resin. What went wrong?
This usually happens for one of two reasons: the flowers were not fully dry before embedding, or the resin generated heat during curing that scorched the petals. Make sure your flowers are silica-dried for at least 48–72 hours before use. Also, use a resin with a low exotherm (low heat generation) for floral embeds. Avoid mixing more than 150 ml at once in a single cup — larger volumes generate more heat.
How many coasters can I make from 500 ml of epoxy resin?
Each 4-inch heart mould uses approximately 80–100 ml of mixed resin for a single-layer pour, or 150–160 ml for a two-layer pour with embeds. From a 500 ml kit (250 ml Part A + 250 ml Part B), you can expect 3–4 coasters with embeds, or 5–6 single-layer pieces. Always mix a little extra — running short mid-pour leaves an uneven surface that is difficult to fix.
What is the best way to price resin heart coasters for Karva Chauth gifting?
A single 4-inch resin heart coaster with floral embeds and a cork base typically retails between ₹250 and ₹450 depending on the materials and finishing. A set of four in matching colours can be priced at ₹900–₹1,600. For personalised pieces with embedded photos or names, add ₹100–₹200 per piece. Wall hangings with tassels and ribbon packaging sell for ₹400–₹700 each. Factor in your resin cost, mica, embeds, packaging, and at least 2–3 hours of labour per batch.
Can I make a resin heart wall piece without drilling a hole?
Yes, absolutely. The easiest method is to use the Heart Hanging Photo Frame Mould which has a built-in hanging slot. Alternatively, you can glue a D-ring or sawtooth hanger to the back of a cured piece using a strong two-part adhesive or a small amount of fresh mixed epoxy as glue. This works well and avoids any risk of cracking the piece during drilling.
Wrapping Up
A resin heart mould tutorial covers more ground than most beginners expect — from choosing the right epoxy ratio to picking a colour palette that actually sells. But once you have done one or two pours, the process becomes intuitive. The 4-inch size is genuinely forgiving, and the silicone mould means clean releases almost every time.
For Karva Chauth and the wedding season, the pieces that sell fastest are the ones that feel personal — a deep red with rose gold for a romantic gift, blush pink with dried baby's breath for a wedding favour, or a photo-embedded wall hanging for a couple's first home. These are not complicated to make. They just need the right materials, a clean pour, and a well-finished surface.
Shrebhavi stocks everything you need for this project — from the 4" Heart Mould to the Heart Box Mould for gift sets. Start with one mould, one colour palette, and one embedding idea. Once you see how the finished piece looks, you will want to make a dozen more.