Ordering glass lids together for handmade ceramic jars: how to avoid size mistakes

A practical guide for potters sharing an order of glass lids: measure handmade rims, agree intended uses, test samples and document quantities.

Measure the opening, not just the general shape

Record the internal and external diameter at the mouth, the shape and height of the rim, and any feature that might prevent a lid from resting evenly. Take measurements from several examples of each handmade design; using the neatest pot as a reference can conceal normal variation. Decide whether a lid is intended merely to sit on top or to locate snugly within the opening. Ask every participant to state an acceptable fit and tolerance rather than saying that the lid will suit a “standard jar”. Different studios may have no shared standard at all.

State exactly how the finished jars will be used

A decorative cover, a lid for a vessel holding food and a cover exposed to heat are not interchangeable specifications. Do not describe an attractive glass accessory as airtight, food-contact suitable or heat-resistant unless its characteristics and the completed arrangement have been independently established for that use. If a maker plans to sell jars with edible contents, they must check the relevant material and finished-product requirements for their actual market. Tell the glass supplier about intended use and any limitations from the outset; appearance alone cannot prove performance.

Test a sample before committing everyone to a batch

Ask each potter to send photographs with a ruler or other clear scale and a simple table of measurements. Where possible, prepare representative jars from each production run, not just digital images. Order one or more trial lids first, and check seating, rocking, clearance and ease of removal on the actual pieces. Record the outcome against each jar type. A shared purchase only saves trouble if the trial confirms that the same lid genuinely works; distributing unsuitable lids after delivery is a poor substitute for sampling.

Agree quantities, payment and how discrepancies will be handled

Make one order sheet showing each participant, jar type, dimensions, proposed lid design, quantity and handover method. Nominate who communicates with the manufacturer, approves the trial and receives the delivery. Treat different dimensions or finishes as separate line items rather than informal side requests. Agree how to compare delivered pieces with the approved sample and what evidence will be used if a lid does not fit. Keep the original measurements, approved drawings and decisions available to all members of the group.

An illustrative UK studio example, with important limits

Imagine three pottery makers in a small Yorkshire town seeking matching-looking glass tops for their individual jar ranges. Instead of combining their quantities immediately, they compare rim profiles, divide the order into two measured variants and request test pieces. Only then do they approach a possible supplier together. This is a hypothetical planning example, not a claim that such a supplier or discount is available. Measurements and any statements about suitability for food or heat still require separate confirmation.

Connect directly through Match2Go

Match2Go is a geosocial service made by people, for people. You can describe a specific group-buying need, share an offer and talk directly with other interested people after they respond. It does not guarantee that a supplier, participant or product is available. Match2Go does not buy paid advertising; it grows through personal recommendations. If this people-to-people approach is useful, please share Match2Go with friends and colleagues so more makers can find one another without an intermediary.

Prepared with AI assistance; independent human editorial review has not been confirmed.