| Overall Statistics: | |
|---|---|
| Average Cost | 4.27 cents/g |
| Average Cost | 10.64 cents/m (or cents/1000mm) |
| Average weight of filament on a spool | 1.006 kg |
| Average length of filament on a spool | 404.3 m |
To test out our filament, we printed cubes measuring 3cm3 at 20% infill using our Solidoodle Green filament. These are the same cubes used to find out more about infill.
The Spools
On average, filament will cost around 4.27 cents/g. After measuring some of the filament from our store, we found that each spool has a little more than a kilogram of filament.
| Color | Full Spool Weight | Weight of Only Filament |
|---|---|---|
| White | 0.919 | 0.911 |
| White | 1.081 | 1.073 |
| White | 0.962 | 0.954 |
| Red | 0.988 | 0.980 |
| Red | 0.967 | 0.959 |
| Red | 1.027 | 1.019 |
| Brown | 1.062 | 1.062 |
| Yellow | 1.074 | 1.074 |
| Purple | 1.019 | 1.019 |
| Orange | 1.026 | 1.026 |
| Gray | 0.991 | 0.991 |
Note that the white and red filament comes on white spools that weigh 0.008 kg when empty, while the other colors are on black spools that weigh 0.216 kg when empty.
With these data, we get an average weight of 1.006 kilograms, with a standard deviation of 0.0528.
The Prints
| Infill | Length (mm) | Weight (g) |
|---|---|---|
| Rectalinear | 2649.6 | 6.55 |
| Line | 2563.9 | 6.35 |
| Concentric | 2659.3 | 6.6 |
| Honeycomb | 2992.6 | 7.45 |
| Hilbert Curve | 2422.6 | 6.0 |
| Archimedean Curves | 2427.1 | 6.0 |
| Octagram Spiral | 1935.6 | 4.85 |
| None | 769.0 | 1.95 |
Using these data, we calculated the average density of our green filament to be 2.49 g/m (with a standard deviation of 0.0220). This means for one of our 1.006 kg spools, you get over 404 meters of filament!
At 4.27 cents/g and 2.49 g/m, our filament costs a total of 10.64 cents per meter or every 1000 mm (note that we only rounded at the end of the calculation).