Pricing Model: Sheet Dimensions

The Sheet Dimensions pricing model is designed for materials you buy as flat sheets (or hides, panels, rolls) and cut into pieces. You enter the sheet's total dimensions and purchase price; when you add the material to a product, you enter the piece dimensions you cut, and CrafterBy calculates the fraction of the sheet used and its cost.

When to use it

Use Sheet Dimensions when:

• You buy the material as a flat sheet, panel, or hide with defined width and height
• You cut pieces of specific dimensions from that sheet

Good examples:

• Leather hides (e.g., 120 cm × 80 cm for €24.00)
• EVA foam sheets (e.g., 100 cm × 50 cm for €6.50)
• Craft felt panels
• Acrylic or wood sheets for laser cutting
• Fabric cuts (where you work in fixed pieces rather than metres)

Setting up a Sheet material

1. Follow the steps in Adding a Material.
2. Select Sheet Dimensions as the pricing model.
3. Enter the Sheet Width and Sheet Height (both in the same unit, e.g., centimetres).
4. Enter the Purchase Price for one sheet at those dimensions.
5. CrafterBy calculates: Cost per cm² = Purchase Price / (Width × Height).

Adding it to a product

When you add a Sheet material to a product:

1. Enter the Piece Width and Piece Height — the dimensions of the cut you use for this product.
2. CrafterBy calculates the cost automatically:
   Cost = (Piece Width × Piece Height) / (Sheet Width × Sheet Height) × Purchase Price

Worked example

You buy a leather hide measuring 120 cm × 80 cm for €24.00.

• Sheet area: 120 × 80 = 9,600 cm²
• Cost per cm²: €24.00 / 9,600 = €0.0025

A wallet requires a 25 cm × 15 cm piece.

• Piece area: 25 × 15 = 375 cm²
• Fraction used: 375 / 9,600 = 3.9%
• Cost per wallet: 3.9% × €24.00 = €0.94

About waste and yield

The Sheet model assumes you can use the entire sheet. If your cutting process produces significant offcuts that cannot be reused (e.g., irregular hides, or fixed-size panels where cut placement matters), add a waste factor when adding the material to a product. A 10% waste factor increases the effective cost by 10% to account for material that is cut away.