Diameter to spec
1.75mm nominal, ±0.02mm on the round. Measured with laser calipers at three points per spool before it goes on the shelf.
About the shop
Fern & Filament is a two-room operation on Depot Street: one side is where we spool and test, the other is where we box up the day’s orders. That’s deliberate. We stock twelve SKUs we actually stand behind instead of a wall of thirty we don’t.
Standards we won’t bend on
1.75mm nominal, ±0.02mm on the round. Measured with laser calipers at three points per spool before it goes on the shelf.
Every spool gets a heat-sealed foil bag with fresh silica gel. Nothing sits on a shelf breathing humidity between us and you.
Printed card in every bag with the exact drying temperature and time for that material, and the temperatures we used on the shop machines when we qualified the batch.
Every batch prints a test tower on both a Prusa MK4 and a Bambu P1S before it ships. If it doesn’t come out clean, the batch stays in the back.
The workshop
We’re a walk-up-and-knock kind of shop. If you’re local, you’re welcome to stop by during workshop hours and pick spools off the shelf yourself — but call ahead so we can save you the drive if a color is between batches.