🫙 Jar with Windowed Lid - Print & Assembly Notes

Design Overview

• Capacity: ~0.5 L (20 fl.oz.)
• Window: Clear round plastic insert, 76 mm Ø × 1.8 mm thick
• Lid: Threaded, recessed for window insert
• Body: Threaded to match, filleted bottom for strength and print stability
• Indicator Block: Prints alongside to show when window placement is needed

Printing Recommendations

• Layer height: 0.20 mm
• Supports:
  • ✅ Jar body: use minimal supports for the filleted bottom only
  • ❌ Lid: avoid supports (window recess must remain clear)
• Support management: If slicing all parts at once, use support blockers or paint-on supports to confine support to the jar bottom only

Indicator Block

• Functions as a visual cue: each notch/layer corresponds to a point in the lid’s build
• Especially useful if:
  • Printer firmware doesn’t support “Pause at height”
  • Maker prefers not to modify g-code
• Method: watch the block - when it changes at the marked step, slip in the window

Assembly Options

1. Conventional pause
   • Pause when the lid reaches indicator height
   • Insert clear plastic disc into recess
   • Resume print to close over window
2. Live insertion (advanced)
   • Print lid, body, and indicator block in one pass
   • While printer continues working on jar body, quickly and carefully place the window in the lid recess
   • Requires steady hands but avoids pausing g-code

Sealing

• Optional: run a thin bead of superglue around the seam after printing to improve dust/moisture resistance