What does sealing involve?
Four things, no more: wax, a heat source, a stamp and a smooth surface. A melting spoon over a tea light is enough for the first hundred seals. Everything else – glue gun, silicone mat, colour blends – makes the work faster or more comfortable, not better.
With the form of the wax there is one decision that shapes everyday use more than the colour: beads can be counted, sticks have to be cut or dripped. If you want even seals, you count – and after the third time you know how many beads your stamp takes. For runs of twenty and more the low-temperature glue gun pays off, because it feeds wax without melting in between; for single seals and for blending colours the spoon is more precise.
This section holds the articles about that process: melting wax, judging the right amount, setting the stamp at the right moment, letting the seal cool, and getting stamp and wax residue clean again afterwards. Questions of design – which motif fits which occasion, how a seal sits on a gift wrap – belong to the wrapping articles.
How much wax does one seal need?
Three beads make a seal of about 25 millimetres in diameter – roughly the size of a common stamp head. A 25-gram pack is good for around twenty seals. Take too little and you get an impression with an incomplete rim: the motif stands, but the circle around it is torn open on one side.
Over a tea light, the wax in the spoon turns liquid after about two minutes. There is no fixed melting temperature – every type of wax behaves a little differently; it is ready when it shines and runs off the spoon. The rest is patience: the stamp stays in the wax for one to two minutes, until the rim loses its gloss. Lift earlier and you pull the motif up with it – then all that helps is removing the wax and starting again.
What goes wrong most often?
The stamp sticks. Almost always because it is too warm. A cool brass head releases by itself; one that has just set three seals in a row welds to the hardening wax. Resting it briefly on a cold metal surface in between is usually enough.
The impression turns out blurred. That is rarely the stamp and almost always the moment. You press when the surface loses its gloss while the wax below is still soft – a window of a few seconds. Too early and the wax flows back; too late and only half the motif stands.
The stamp goes dull. Not wear, but wax residue in the recesses of the motif. Take it off lukewarm with a cloth – no scratching, no dishwasher. A brass head that once had residue picked out with a needle shows the scratches in every following impression.
The seal breaks in the post. A seal makes the envelope unevenly thick, and sorting machines break classic wax. If you really want to mail it, you need flexible wax – or you seal onto a sticker and apply it at the recipient's end.
Further in the guide
The two articles to start with:
- Melting sealing wax: quantity, cooling time and how to tell it is ready
- Why the impression blurs and when exactly to press
Related topics: stamping with ink instead of wax – the movement is related, the mistakes are different. And wrapping gifts, where the seal turns from closure into centrepiece.
The materials – wax beads, sticks, melting spoons and motif stamps – are under buy sealing wax and seal stamps.
