1. What is Cost of Filament per Gram?

Definition: This calculator determines the cost per gram of 3D printing filament based on the total price of the spool and its weight.

Purpose: It helps 3D printing enthusiasts and professionals compare filament costs and budget for projects more accurately.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( C_g \) — Cost per gram ($/g)
• \( P_f \) — Price of filament spool ($)
• \( W_f \) — Weight of filament (grams)

Explanation: The total price of the filament spool is divided by its weight to determine the cost per gram.

3. Importance of Cost per Gram Calculation

Details: Knowing the cost per gram helps in comparing different filament brands, types, and spool sizes, and in estimating project material costs.

4. Using the Calculator

Tips: Enter the total price of the filament spool in dollars and the total weight of the filament in grams. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Why calculate cost per gram instead of just spool price?
A: Different spools have different weights, so cost per gram allows for direct comparison regardless of spool size.

Q2: Should I include shipping costs in the price?
A: For accurate project costing, yes. For comparing base material costs, you might exclude shipping.

Q3: What's a typical cost per gram for PLA filament?
A: Standard PLA typically ranges from $0.03 to $0.06 per gram, with premium or specialty filaments costing more.

Q4: Does this account for the empty spool weight?
A: No, use the net filament weight. Some manufacturers provide this, or you can weigh an empty spool and subtract.

Q5: How can I reduce my filament costs?
A: Buy larger spools (usually cheaper per gram), wait for sales, or consider bulk purchases with other users.