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In stock
Ordered and paid on a working day: usually ships the same day
Delivery to Netherlands: usually within 1 working day
In stock
Ordered and paid on a working day: usually ships the same day
Delivery to Netherlands: usually within 1 working day
In stock
Ordered and paid on a working day: usually ships the same day
Delivery to Netherlands: usually within 1 working day
- 30-day returns
- Over 100,000 happy customers
- Pay later with Klarna
- Personal advice from material experts
Question about this product? Our material experts are happy to help you choose the right product. Contact us
Premium Alginate for Professional Applications
Alginate 3D Gel is a fast-setting, skin-friendly impression material based on sodium alginate, specially developed for making detailed 3D impressions of body parts. With a working time of 3–4 minutes and full cure within 5 minutes, this alginate delivers razor-sharp reproductions of skin texture, fingerprints and facial contours – ideal for body casting, SFX work and medical training models.
Key Benefits
- Fast cure: Fully cured within 5 minutes, working time 3–4 minutes depending on the mix ratio
- Razor-sharp detail: Perfectly captures skin lines, fingerprints and textures for professional results
- Skin-friendly and safe: Dermatologically tested, suitable for all ages including babies, no irritating substances
- Biodegradable: Environmentally friendly seaweed-based material, easy to remove with water
- Visual colour indicator: Pink when mixed, white when fully cured – no more guesswork
- Pleasant strawberry scent: A pleasant working environment, especially for face casts and longer sessions
Typical Applications
- Body casting and life casting: Hand, foot and belly casts as keepsakes, for recording a pregnancy and for art projects
- SFX and special effects: Face masks, prosthetics and make-up applications for film, theatre and cosplay
- Medical sector: Training models, orthodontic impressions and prosthetic fitting in podiatry and orthopaedics
- Art education and workshops: Sculpture projects, design and creative sessions in schools and studios
- Tattoo industry: Practice sleeves for realistic skin reproductions and portfolio development
- Erotic applications: Safe, discreet casts for personalised replicas
Technical Features
Alginate 3D Gel is supplied as a powder and mixed with water at a ratio of 1:4 (pouring) or 1:3 (spreading). At 1:4 the pot life is 3.5–4 minutes, with demoulding after 5.5 minutes. For spreading (1:3) the pot life is reduced to 2.5–3 minutes. Use cold water for a longer working time and warm water for a faster cure. The material is single-use and cannot be reused.
S.A.M. supplies this alginate under its own Silicones and More brand as a reliable choice for professionals and hobbyists who value consistent quality and technical support.
Professional Support
Do you have questions about mix ratios, processing techniques or choosing the right material for your project? Our technical team is ready to give tailored advice on body casting, SFX applications and industrial projects.
Instructions for Use
Step 1: Measure out the correct amount of powder and water according to the table below
Step 2: Mix the powder with cold water at a ratio of 1:4 (pouring) or 1:3 (spreading)
Step 3: Stir vigorously until a smooth, lump-free mass forms
Step 4: Immerse the body part in the gel and keep still
Step 5: Wait approx. 5 minutes until the gel has turned completely white and set
Step 6: Carefully withdraw the body part from the mould
Tip: Use cold water for a longer working time and warm water for a faster cure.
Quantities Required
| Hand type | Container size | Alginate | Water | Porcelain plaster | Water for plaster |
|---|---|---|---|---|---|
| Baby's hand (0–1 years) | 550 ml | 96 g | 384 g | 150 g | 35 g |
| Child's hand (2–10 years) | 1150 ml | 168 g | 672 g | 300 g | 75 g |
| Woman's hand/child >10 | 1150 ml | 204 g | 816 g | 600 g | 150 g |
| Man's hand | 1900 ml | 288 g | 1152 g | 800 g | 200 g |
PLEASE NOTE: Not every hand position is suitable! Always make sure air bubbles can escape.

Important Tips
- Use cold water to extend the working time
- Ensure a smooth mixture by stirring thoroughly
- Prevent air bubbles by pouring slowly
- Pour immediately after mixing – alginate sets quickly!
- Sealing is recommended if the cast will be placed outdoors
Shelf Life
✔ Shelf life of 1–2 years in closed packaging; store in a cool, dry place
Product Properties
- ColorWhiteColor of the finished product
- Mix ratio1:4 (e.g. 500 grams of Alginate 3D gel to 2000 grams of water).Mixing ratio A : B
- Tensile strength0.6MPaMaximum tensile force before breaking
- Pot life3minutesWorking time after mixing
- Cure time5minutesTime until full cure
Application
- Use caseLife casting of body partsIntended use
Manuals
- Guide: Casting a hand or body part with 3D-Gel (Alginate) View manual
- Guide: Making an ultra realistic silicone hand View manual
- Guide: making a coloured silicone hand View manual
- Guide: making a glow in the dark silicone hand View manual
Blogs
Want to see how enthusiastic #EnzoKnol is about the SAM Bodycasting kit?
#knolpower WE MAKE A PEACE OF OUR OWN HAND! DIY #2659 Read more…
A first baby hand made of porcelain plaster
A first baby hand made of porcelain plaster from a 3D alginate mold. Read more…
Making bodycastings their way
The "De stormpjes" make bodycastings their own unique way using SAM bodicasting materials! Read more…
Easily create a tattoo practice skin - From your own arm!
Want to learn to tattoo yourself? Did you know that silicone is very similar to human skin when it comes to tattooing? Easily make a silicone cast of your arm so you can practise realistically. Read more…
YouTube
Frequently asked questions
What is the delivery time for my order?
Orders placed and paid on working days are in most cases shipped the same day. Weekend orders are processed on the next working day.
Indicative delivery times: Netherlands usually within 1 working day, Belgium and Germany typically 1–2 working days, other countries depending on destination and carrier. These are guidelines, not guarantees: peak periods, public holidays or carrier delays can have an effect.
What is the return policy?
You have 30 days to return after receipt. Email info@siliconesandmore.com within 30 days of delivery with your name and order number. The full conditions are in our return policy.
How can I track my order?
As soon as your order has shipped, you'll receive a track & trace code by email. It can take up to 24 hours before the code is active.
I have a problem with my order – how do I reach you?
Contact us via our contact page or email info@siliconesandmore.com. We're happy to help you quickly.
Can I order as a business?
Yes. Apply for a business account; we review your application within 3 working days. After that you order while logged in and pay on invoice, with payment terms of 14 days after delivery.
EU businesses outside the Netherlands with a valid VAT number order with VAT reverse-charged (0%, intra-community supply). The VAT number is stored in your business account; it cannot be added to an order after it has been placed.