--- product_id: 700921185 title: "Book of Secrets 3D Puzzle Box - 3D Wooden Puzzles for Adults, Fun DIY Sets for Adults - Steampunk Treasure Chest with Combination Lock, Unique Gift - 263 Pieces" brand: "ugears" price: "€ 155.64" currency: EUR in_stock: true reviews_count: 5 category: "Ugears" url: https://www.desertcart.hr/products/700921185-book-of-secrets-3d-puzzle-box-3d-wooden-puzzles-adults store_origin: HR region: Croatia --- # 3-digit combination lock 263 precision wooden pieces multi-level mechanical opening Book of Secrets 3D Puzzle Box - 3D Wooden Puzzles for Adults, Fun DIY Sets for Adults - Steampunk Treasure Chest with Combination Lock, Unique Gift - 263 Pieces **Brand:** ugears **Price:** € 155.64 **Availability:** ✅ In Stock ## Summary > 🔐 Unlock your curiosity with the ultimate steampunk brain teaser! ## Quick Answers - **What is this?** Book of Secrets 3D Puzzle Box - 3D Wooden Puzzles for Adults, Fun DIY Sets for Adults - Steampunk Treasure Chest with Combination Lock, Unique Gift - 263 Pieces by ugears - **How much does it cost?** € 155.64 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/700921185-book-of-secrets-3d-puzzle-box-3d-wooden-puzzles-adults) ## Best For - ugears enthusiasts ## Why This Product - Trusted ugears brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **No Glue, No Fuss:** Assemble with precision-fit wooden pieces—no adhesives or special tools required, making it a clean and satisfying DIY experience. - • **Compact Yet Captivating:** At just under 4 inches, it fits seamlessly on your shelf or workspace while holding your most treasured secrets. - • **Intricate Steampunk Design:** A visually stunning puzzle box that doubles as a chic desk accessory and conversation starter. - • **Engaging Mechanical Challenge:** Unlock the secret compartment through a clever multi-stage sequence—perfect for sharpening problem-solving skills. - • **Perfect Gift for the Modern Mind:** Ideal for professionals who crave creative outlets and unique keepsakes, making every occasion memorable. ## Overview The UGEARS Book of Secrets is a 263-piece wooden 3D puzzle box featuring a steampunk aesthetic and a three-digit combination lock. Designed for adults, it offers a multi-level mechanical opening sequence that challenges your problem-solving and motor skills. No glue or special tools are needed for assembly, making it a clean, engaging DIY project and a perfect gift for puzzle enthusiasts and creative professionals alike. ## Description Miniature things, diy miniature house kit, adult crafts, brain teaser puzzles for adults, craft kits for adults, hobbies for women, adult craft kits, miniature kit, treasure chest, men gifts for birthday, unique gifts for men, cool men birthday gifts, model kits for adults, model kits, hobbies for men, models for adults to build, puzzle for adults, adult puzzle, wood puzzle, building sets for adults, hard puzzles for adults, difficult puzzles for adults, mind puzzles for adults, unique puzzles for adults, adult crafts for women, building kits for adults, gifts for engineers, hobby kits for adults, 3-d puzzles, brain puzzles, wood puzzles for adults wooden, diy miniature kit, craft kits for adults women, adult craft, wooden models for adults to build, rompecabezas 3d, wooden 3d puzzles for adults, ugears wooden 3d puzzles for adults, wood models for adults to build, adult building sets,unique puzzles, fun puzzles for adults, adult gifts, rompecabezas 3d para adultos, adult wooden puzzles, gifts for adults, building kit, hardest puzzle in the world, coolest puzzles for adults, fun crafts for adults, puzzle 3d, best puzzles for adults, gifts for puzzle lovers, wooden models, wooden 3d puzzles, puzzles for teens, 3d wood puzzles for adults, puzzles 3d, miniature kits for adults, craft kit adult, model building kits for adults, easy puzzles for adults, a model kit, diy miniature, 4d puzzles for adults, brain puzzle, models kits, mini building kit, rompecabezas de madera, money gift box, puzzle box for adults, puzzle games for adults, wooden money box, puzzle boxes, puzzle boxes with hidden compartments, wooden puzzle box, fathers day puzzle, puzzles for dad, puzzles for men, adult puzzles 3d, build kits for adults, wooden puzzle for adults, 3-d wooden puzzles for adults, wooden puzzle boxes for adults, projects teenagers teen brainteaser set engineering large mechanic advanced mens crafthub puzzels biggest miniatures womens creature intelligence engineer. Review: Superbe objet ! Review: This is one of the finest artifacts of human ingenuity that I have ever had the pleasure of experiencing. Not only is this stupendously clever in its design, great fun to assemble, and also extremely well engineered (especially given it is made out of wood!)... but it is also a wonderfully entertaining and genuinely useful keepsake for a child to keep their secret things safe :) ## Features - UNIQUE DESIGN WOODEN The UGEARS Book of Secrets is a stunning 3D wooden puzzle for adults in the style of a steampunk book with a secret compartment, perfect for adults who love puzzles and craft material. - MECHANICAL FUN This model kit of 3D puzzles for adults features a multi-level opening sequence with a three-digit combination lock that provides endless entertainment and puzzle fun. - NO GLUE REQUIRED Build this miniature wooden puzzle for adults without glue or special tools. This educational and creative STEM project is ideal for adult craft lovers and as an adult hobby. - PERFECT GIFT The coolest gift for puzzle lovers, engineers, ideal for birthdays, Father's Day, Christmas or any other special occasion, making it the best choice for entertainment and personal storage. - CREATIVE CRAFT Enjoy crafting a unique mechanical puzzle box model kit made of high quality wood and detailed design, perfect to organize your personal treasures and challenge your mind. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0D9KZ13Z7 | | Additional Features | Steampunk style, multi-stage opening sequence, three-digit combination lock | | Age Range Description | Adult | | Best Sellers Rank | #122,931 in Toys ( See Top 100 in Toys ) #954 in 3-D Puzzles | | Brand Name | UGEARS | | Color | Dark and Light Wood | | Customer Reviews | 4.5 4.5 out of 5 stars (266) | | Educational Objective | Brain Teaser, Concentration Skill, Motor Skill, Problem Solving Skill | | Included Components | 263 wooden puzzle pieces | | Is Assembly Required | Yes | | Item Dimensions | 18.7 x 17 x 0.1 centimeters | | Item Dimensions L x W | 18.7L x 17W centimeters | | Item Shape | Irregular | | Item Weight | 305 Grams | | Manufacturer | UGEARS | | Manufacturer Maximum Age (MONTHS) | 1200 | | Manufacturer Minimum Age (MONTHS) | 168.0 | | Manufacturer Part Number | 70265 | | Material Type | Wood | | Model Number | 4820184122321 | | Number of Items | 1 | | Number of Pieces | 263 | | Number of Players | More than 1 | | Operation Mode | manual | | Play Activity Location | Tabletop | | Power Source | Manual | | Product Style | steampunk | | Puzzle Type | Puzzle Box | | Set Name | Mystery Box 3D | | Size | 3.82 x 2.6 x 3.86 inches | | Skill Level | Intermediate | | Subject Character | The DaVinci Code | | Theme | steampunk | ## Product Details - **Brand:** UGEARS - **Manufacturer Minimum Age (MONTHS):** 168.0 - **Number of pieces:** 263 - **Product dimensions:** 18.7L x 17W centimeters - **Puzzle type:** Puzzle Box ## Images ![Book of Secrets 3D Puzzle Box - 3D Wooden Puzzles for Adults, Fun DIY Sets for Adults - Steampunk Treasure Chest with Combination Lock, Unique Gift - 263 Pieces - Image 1](https://m.media-amazon.com/images/I/71Gou23sA+L.jpg) ## Questions & Answers **Q: Any advice on assembly?** A: Press parts from the side with thicker cut lines when removing them from pre-cut boards Check and sand gears for burrs to prevent jamming Wax all moving parts for smoother operation Stretch rubber bands to fit them into small openings **Q: Do I need any tools to assemble Ugears models?** A: Everything needed for assembly is in the box Ugears models don’t need extra tools or glue If you prefer, you can use your own tools A modeling knife can help with removing pieces or smoothing, but we provide punch pieces and sandpaper for these tasks **Q: Spare and replacement parts for Ugears mechanical models** A: Spare parts are included for components used multiple times. If you break any unique pieces, you can request free replacements, and we’ll send them to you at no cost. **Q: What if I have more questions about assembling the models?** A: You can check out the video instructions above If you have any questions, feel free to reach out via email The Ugears Service Team will be happy to provide tips, explanations, troubleshooting, or other help with the assembly ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by 1***E on 9 December 2025* Superbe objet ! ### ⭐⭐⭐⭐⭐ Review *by I***D on 19 August 2025* This is one of the finest artifacts of human ingenuity that I have ever had the pleasure of experiencing. Not only is this stupendously clever in its design, great fun to assemble, and also extremely well engineered (especially given it is made out of wood!)... but it is also a wonderfully entertaining and genuinely useful keepsake for a child to keep their secret things safe :) ### ⭐⭐⭐⭐⭐ Review *by D***A on 11 October 2024* To mój pierwszy kolorowy zestaw od UGEARS. Wciąż jestem w trakcie jego budowania. Ale dwukolorowe drzewo wygląda pięknie. Polecam kupić. ## Frequently Bought Together - UGEARS Book of Secrets Puzzle Box - 3D Wooden Puzzles for Adults, Fun Wood Steampunk Combination-Lock - DIY Building Mechanical Model Kit for Fathers Day and Hobby Enthusiasts - 263 Pcs - ROKR 3D Wooden Puzzles for Adults Illuminated Globe with Stand 180pcs 3D Puzzles Built-in LED Model Kit Hobby Gifts for Adults/Teens Home Decor - Wood Trick Antique Lantern Luminous LED 3D Wooden Puzzles for Adults and Kids to Build - 2-Mode Lighting - Engineering DIY Project Mechanical 3D Puzzle Model Kits for Adults --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hr/products/700921185-book-of-secrets-3d-puzzle-box-3d-wooden-puzzles-adults](https://www.desertcart.hr/products/700921185-book-of-secrets-3d-puzzle-box-3d-wooden-puzzles-adults) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-04-25*