SillSpiral - Modern self-watering planter

Overview

• Elegant self-watering planter designed for everyday kitchen use
• Perfect for fresh herbs on a windowsill – practical and visually striking
• Smooth inner pot + sculpted outer shell for a premium, modern aesthetic
• Designed and tested for reliable real-world printing (see photos)

Features

• Self-Watering System
  • Inner pot nests perfectly with a built-in fill lip for easy watering
• Conversation-Starting Design
  • Flowing, spiral texture adds depth and movement from every angle
• Optimized for FDM Printing
  • No supports required
  • Clean overhang transitions and consistent wall thickness
• Functional + Decorative
  • Works as both a plant system and a display piece
• User Verified
  • Successfully printed and used (as shown in real photos)

Description

I designed this planter with a simple goal: bring fresh herbs into our daily cooking routine without sacrificing style.

My wife wanted something that didn’t just “sit” in the window — she wanted something that looked intentional, something that could spark conversation while still being functional. Most planters are either purely decorative or purely practical. This is both.

The flowing, sculpted exterior creates a sense of motion — almost like the planter is gently twisting upward — while the inner pot keeps things clean and efficient. The integrated lip makes watering easy and controlled, perfect for a kitchen setup where convenience matters.

Placed in a windowsill, this becomes more than just a planter — it becomes part of the space. Whether you're growing basil, mint, or small greens, it keeps fresh ingredients within reach while elevating the look of your kitchen.

Designed, printed, and tested in real use — this is not just a concept. It works.

Assembly Guide

1. Print both components
   • Outer decorative shell
   • Inner planting pot
2. Insert inner pot into outer shell
   • Align so the watering lip is accessible from the top
3. Add watering strings through the printed holes
   • Ensure the strings stay at the bottom of the pot to absorb the water. 
4. Add soil and plant
   • Keep the string going up as far as you'd like the water to reach up the soil
5. Fill water reservoir
   • Use the lip opening for easy watering
6. Place in desired location
   • Ideal for windowsills or countertop use

Bill of Materials (BOM)

5mm Cotton Wick String: https://amzn.to/4exNfd0 

Technical Print Settings

Recommended (tested profile):

• Layer Height: 0.2 mm
• Wall Loops: 3
• Infill: 15% (Triangle)
• Supports: None
• Top/Bottom Layers: 4–5

Print Stats:

• Material: ~170g
• Time: ~5h 15m

Notes:

• Matte filaments enhance the sculpted texture significantly
• Slower outer wall speed improves surface finish on curves
• PETG can contract or shrink on you - no issues with my print but please keep this in mind.