A smooth enamel surface is the outcome of more than applying colour. Tokyo’s shippo account places abrasive work between firing and a final firing operation.
Technique and structure
The specification describes placing enamel with a bamboo spatula or brush, allowing roughly three to five hours of natural drying, and firing at 800–850°C. It then lists rough surface grinding with a number-180 stone before age-yaki, the finishing firing. The abrasive operation is therefore not the last named stage. Read as a sequence, the account distinguishes building the enamel layer, working its surface and returning it to the kiln.
Keep the specification local to the process
The broader description identifies enamel as coloured glass powder fired onto metal. Its stated times and temperatures describe this reference process; they do not identify the recipe of every object sold as shippo.
For international readers
Ask the maker about the actual base and surface finish. This manufacturing account supplies no heating, food-use or repair instruction for a finished piece.
Global shipping and buying
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日本語
東京七宝：研磨の後に行う上げ焼き
東京都の東京七宝資料は、釉薬を盛り、約3〜5時間自然乾燥し、800〜850℃で焼成、180番砥石で粗研ぎした後に仕上げ焼成の上げ焼きを行うと記載しています。銀線や素地の区別とは別に、表面を整える工程と再び焼く工程の順序を説明します。