# The Drop Lid: Simplest Lid to Throw

Unit: Handles, Spouts & Lids
Topic: Drop Lids & Galleries
URL: https://claybook.studio/learn/the-drop-lid-simplest-lid-to-throw/

# Start Here

The drop lid is the entry point for lid making. It is a shallow, flat disc with a flange (a downward-facing rim) that drops into the pot opening and rests there. Simple, clean, and functional.

## What You Are Throwing

Picture a small shallow dish turned upside down. The flat top is the lid surface visible from above. The flange (the short turned-down edge) is what sits inside the pot opening to locate the lid and stop it sliding off.

## The Throwing Sequence

Center a small amount of clay (150–250g depending on the pot size). Open it wide and flat, as you would a plate, leaving a thin floor.

1.  **Create the flat disc**: Open the clay fully, making a wide, flat form about the diameter of your caliper measurement. Keep the walls very low, just 1–2cm high.
2.  **Form the flange**: Pull the outer wall downward and slightly inward to create the flange. The flange should be about 1–1.5cm deep.
3.  **Check with the caliper**: The inner diameter of the flange should match your caliper measurement (plus 1–2mm tolerance).
4.  **Compress the top surface**: A flat lid needs a very well-compressed top; S-cracks are common here just as with plates.
5.  **Add a knob** (optional): Leave a small boss of clay in the center and pull it upward into a knob after forming the lid.

## Drop Lid Build Checklist
Before removing from wheel:
* Flange depth is consistent all around
* Top surface is fully compressed
* Lid sits true without warping

Consistency here is the difference between snug and frustrating fit.

## Down the Rabbit Hole

The drop lid's flat top surface is prone to the same S-crack problems as plates, because the clay particles left from opening can pull apart during drying if not thoroughly compressed. The [flange](https://en.wikipedia.org/wiki/Flange) that locates the lid inside the pot is a concept borrowed from engineering, where flanged joints connect pipes and fittings. [Raku ware](https://en.wikipedia.org/wiki/Raku_ware) tea caddies often feature elegant drop lids where the flange fit is deliberately loose, allowing the lid to be lifted easily during the tea ceremony.

## Check your understanding

### Question 1: What is the "flange" on a drop lid?

- [ ] A. The handle or knob on top of the lid
- [x] B. The downward-facing rim that drops into the pot opening
- [ ] C. The flat top surface of the lid
- [ ] D. The decorative edge around the lid

Tip: The flange is the short downward-facing rim on the underside of the lid that drops into the pot opening and keeps the lid located.

### Question 2: Why does the top surface of a drop lid need to be thoroughly compressed?

- [ ] A. To make it smooth for decoration
- [x] B. Flat surfaces are prone to S-cracks without compression
- [ ] C. Compression makes it dry faster
- [ ] D. It helps the knob attach better

Tip: Like a plate, the flat top of a lid is prone to S-cracks if not compressed. Thorough compression aligns the particles to resist cracking.