Bag Clip with Date Slider – Month & Day

"When did I freeze this?" A bag clip that answers it. Months 1–12 on one face, MO–SU on the other, and a red marker that slides along the top to the right one. How it works - Lay the bar on the bag opening and roll the bag once around it.

- Slide the sleeve over the bar from the end. The bag comes out through the slot along the bottom; the bar's tab stays outside so you can pull it out again.

- Slide the red marker to the month you froze it, or turn the clip over and use the days for the fridge. The marker straddles the clip, so it points on both faces.

Sizes - Sleeve 100 × 15.8 × 6.8 mm, bar 112 × 12 × 3.2 mm: fits bags up to about 95 mm wide when folded, or the rolled-down top of a wider bag.

- The grip comes from the sleeve: 0.4 mm of room around the bar for four layers of bag. Thin freezer bags clamp well; very thick bags may need a little sanding of the bar.

Print settings - No supports needed: the bag slot is on the underside, so the inside of the sleeve is a simple 12.6 mm bridge.

- PLA or PETG, 0.2 mm layers, everything flat, no supports. PETG is better for the freezer (PLA gets brittle in the cold).

- The 3MF puts the three parts on one plate and assigns red to slot 1, white to slot 2 (MMU3). The numbers are a 0.6 mm inlay on BOTH faces of the sleeve: the first three and last three layers swap colour. For one colour, print the plain STLs.

- The marker prints standing on its U-shaped profile, the only way it needs no support; the 3MF includes a spare. A brim helps it stay put on the bed.

Accuracy First prints are being tested. If the sleeve is too tight or too loose on your printer, tell me and I will publish a variant. Designed with AI assistance (parametric Python script, manifold3d). En français Pince à sac avec curseur de date. On enroule le sac autour de la barre, on glisse le fourreau par le bout, et on règle le curseur rouge sur le mois de congélation (1 à 12) ou, en retournant la pince, sur le jour (MO à SU) pour le frigo. Trois pièces à plat, sans supports, chiffres incrustés en deux couleurs sur les deux faces. PETG conseillé pour le congélateur.