I have purchased all the equipment and materials I need to begin recycling my filament spools back into filament.
- [Shredii 6](https://actionbox.ca/pages/shredii-6)
- [C1 Filament Extruder](https://www.3dpany.com/products_details/12.html)
- [ABS 1410 CF Pellets](https://www.amazon.com/dp/B0F8L1S2X5)
- [Black-ABS GPCA-242 Masterbatch](https://onedaycolor.com/products/black-gpca-242)
I've also roughed out a process for this.
```mermaid
flowchart TD
spools([Spools])
spools -- Sort HIPS/ABS using solvent -->
sorted[Sorted Spools] -- Dissasemble with Band Saw -->
coarse[Coarse Spools] -- Grind with Shredii -->
intermediate[Intermediate Granulate] -- Dry -->
dryintermediate[Dry Intermediate Granulate] -- 49.5% -->
mixed
virgin([Virgin Pellets]) -- Dry ----->
dryvirgin[Dry Virgin Pellets] -- 49.5% -->
mixed
master([Black Masterbatch]) -- 1% ------>
mixed
mixed[Mixed Pellets] -- Extrude -->
filament([Recycled Filament])
%% Styling (optional)
classDef action fill:#eef,stroke:#336,stroke-width:1px;
classDef terminal fill:#efe,stroke:#393,stroke-width:1px;
class sorted,coarse,intermediate,dryintermediate,dryvirgin,mixed action;
class spools,virgin,master,filament terminal;
```
# Current inventory
- ~250 Black Spools
- 20Kg ABS 1410 CF Pellets
- ~2.25kg Black-ABS GPCA-242 Masterbatch
# Estimated quantities
Each spool to be recycled is about 165g. I'm planning to put 800g per spool.
Grams of recycled spool required per 800g final product:$
800\,\mathrm{g}\times 49.5\% \;=\; 800\,\mathrm{g}\times 0.495 \;=\; 396\,\mathrm{g}
$
Total spool resin available:
$
250\,\text{spools}\times 165\,\mathrm{g}
\;=\; 41\,250\,\mathrm{g}
\;=\; 41.25\,\mathrm{kg}
$
Total spools I'm able to produce right now:
$
\frac{37.5\,\mathrm{kg}}{396\,\mathrm{g}/\text{spool}}
\;=\;
\frac{37\,500\,\mathrm{g}}{396\,\mathrm{g}/\text{spool}}
\;\approx\; 94.70\ \text{spools}
\;\approx\; 95\ \text{spools}
$
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