Grimm's Cornerstones from Oskar's Wooden Ark opens a whole new range of possibilities. This set allows tricky and surprising layering variations and develops spatial thinking. This is how new and various objects in different colour patterns are created over and over again!

In combination with Grimm's classic building materials like the , the , the and stepped pyramids, , the Cornerstones reveal their true greatness. With their aid, the most diverse marble runs can arise.

We have added three examples (see photos) on how to build your own marble run made of Grimm's Wooden Toys. It can take some experimenting until the step height matches the ball size and the optimal distance between the cornerstones is found. Tricky building and construction for adults and playing fun even for the little ones. If everyone works together, great things can happen.

• Marble Run Staircase: In combination with the  the  and the Building Set Cornerstones this marble run staircase was created for .

• Marble Run Bridge: This daring bridge construction for  is a combination of the  the , the , the  and the Building Set Cornerstones.

• Marble Run Spiral: In combination with the , the  and the Building Set Cornerstones was created for .

We can't wait to see all the inventors and architects out there!

• Specifications
• Safety & Usage
• Grimm's

• Made in: Germany
  Includes: 18x Blocks, 1x Tray
  Materials: 
  • Beechwood from sustainable forestry
  • Water-based, non-toxic, spittle-resistant paints/stains
  Eco Credentials: Wood sourced under the Grimm's environment responsibility commitment
  Dimensions: L 15cm W 15cm H 5cm (approx.)
  

• Recommended Age: 5 years
  WARNING: Not suitable for children under 36 months. Choking hazard due to small parts.
  Safety: Grimm's wooden toys are meticulously handmade using premium materials that are toxic-free and completely safe for children. Conforms to European (EN 71) and American (CPSIA/ASTM 963) Toy Safety Standards. ISO Certified (9001:2015).
  

• Grimm’s Spiel & Holz Design is a family-owned business from the Swabian Alps in Germany. Developing and manufacturing wooden toys since 1978, Grimm's intent is to design toys, whose simple design, together with beautiful colouring are suited for all ages. Products with an optimal balance of innovation and minimal design inspires creativity and open-ended play - products that grow with your children and that are played with over and over again.