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Thank you for choosing Luna Bean!

Your Baby Casting Kit is designed to help you capture those tiny hands or feet in stunning detail — creating a keepsake you’ll treasure forever.

Watch the video below to see the full casting process in action — start to finish. It only takes a few minutes and will help your casting turn out beautifully.

Need a backup? Download the full instructions anytime to keep on hand.

STEP 1: WATCH THE HOW-TO VIDEO

Before you begin, make sure to watch this video all the way through. It’ll help you understand the full process and make your first casting as smooth as possible. We also recommend having a second person help out — especially when working with wiggly little hands and feet.

 

STEP 2: WATER TEMPERATURE

Water temperature affects how quickly or slowly the mold sets. Cooler water will slow things down, and warmer water will speed things up. For best results, use a thermometer to make sure your water is between 75 and 78 degrees Fahrenheit.

 

STEP 3: ADD WATER

Foot casting uses 2 cups of water — fill the provided foot container up to the water fill line.

If you’re casting a hand instead, use 1 cup of water in the hand molding cup or fill to the marked water fill line.

STEP 4: MIX STEP 1 MOLDING POWDER

Slowly add the Molding Powder into the water while stirring. Do not dump it all in at once — that can cause air bubbles. Mix for about a minute until it turns bright pink.

💡 TIP: The molding material will never be completely lump-free, and that’s okay.

 

STEP 5: DIP HAND OR FOOT

Wait until the mixture fades from bright pink to light pink. When the mixture turns light pink, that is when you dip your baby's hand or foot.
 
Gently dip your baby’s foot into the mixture. Wiggle slightly to avoid air bubbles and make sure not to touch the sides or bottom of the container.

 

STEP 6: LET IT SET, THEN REMOVE

Hold the foot in place for about 3 to 4 minutes until the mold sets. It will feel firm and should not stick to your fingers. Once it’s ready, gently wiggle to release and remove the foot.

 

STEP 7: ADD WATER TO BOWL

Now pour ½ cup of water into a clean mixing bowl. 

 

STEP 8: MIX STEP 2 CASTING STONE

Add one bag of the Casting Stone into the bowl and mix until smooth. Set aside 1 teaspoon of the mixture — you’ll use it later for touch-ups.

 

STEP 9: SLOWLY POUR, TILT, & TAP

Pour half of the Casting Stone mixture into the mold. Tilt and tap the container to release air pockets. This step is especially important to help avoid breaking fingers or toes in the casting.

 

STEP 10: POUR, TILT, & TAP AGAIN

Now pour in the rest of the Casting Stone. Tilt and tap the container again to ensure the mixture fills in every detail.

🚫 Don’t pour anything down the sink — discard leftover material in the trash.

 

STEP 11: LET YOUR LUNA BEAN SET

Let the casting sit and dry for at least 4 hours before removing it from the mold. This gives it time to fully harden, especially around the delicate areas. For best results, demold no more than 24 hours later.

 

STEP 12: REMOVE THE MOLD

To loosen the mold, gently pull on opposite sides of the container to break the suction. Then carefully slide the mold out.

 

STEP 13: DEMOLD CAREFULLY

Use your fingers or the plastic knife to gently peel away the molding material. Take your time — peel in small pieces to avoid damaging tiny toes or fingers.

 

STEP 14: CLEAN & TOUCH UP

Use the included detailing tools to clean off any extra material. You can also use the casting stone you saved earlier to fix any small imperfections.

 

STEP 15: LET YOUR LUNA BEAN DRY

Place the casting in a well-ventilated area and allow it to dry for 24 hours. Then you can use the sandpaper to smooth out rough spots. 

Before painting or decorating, let the casting dry for 3 to 5 days to avoid any mold or mildew.

We hope you love your keepsake as much as we loved helping you create it.

If you have any questions, we’re here to help — just email support@samsonpurehealth.com. And don’t forget to tag Luna Bean on Instagram and TikTok — we can’t wait to see your masterpiece!

Frequently asked questions

What water temperature should I use for mixing the Step 1 alginate molding material?

We recommend using room temperature water - about 75°F - 78°F. If the water is warmer, bath temperature, the molding material will set quicker.

How can I avoid bubbles in the mold?

During Step 1, you will need to gently massage water onto the baby’s hands, leaving them damp but not dripping wet. You can also add a drop of baby oil and massage it into their hands to help retain moisture.

In step 2, the casting stone, gradually pour the casting stone into the mold. Tap the container to ensure it is filled all the way.

When is the best time to cast a baby's hand or foot?

The best time to cast a baby's hand or foot is when they are relaxed. This is often during a nap or after a feeding. You can also try distracting them with a toy or a song.

How can I ensure that the fingertips/fingernails are visible on the cast?

To ensure that the fingertips/fingernails are visible, allow the molding material to set completely before removing your baby’s hand or foot from the mold.

How long does it take for the cast to dry completely?

The cast should dry for at least 5 days before painting or sealing. To ensure that your casting dries evenly and completely, it is important to place it in an open, well-ventilated area with a lot of natural light. Do not place the casting on a shelf or in a dark closet, as this could prevent it from drying properly.

What paints and sealants are recommended for my casting stones?

What paints and sealants are The casting stone is somewhat porous and will absorb oils from the hands when they are handled, which may cause discoloration over time. Luna Bean Baby Casting kits come with sealant and two paint colors that are specifically designed to achieve the best results. If you want to use other colors, acrylic paints work well too.

How can I prevent mold/mildew growth on the cast?

Ensure it is thoroughly dried in a well-ventilated area. Use a bleach wash (50% bleach / 50% water), bleach pen, bleach spray, etc.  That will take care of the issue and not harm the cast.

What should I do if the sculpture is broken in the mold?

Oh, no! Please reach out to us at info@samsonpurehealth.com, we're here to help!