I use a high gloss finish of my house numbers, signs and memorial signs. One problem has always been the varnish being wasted as it starts to slowly set in the tin.
I saw this idea on the internet and wanted to see if it works. Once a tin of varnish is opened the shelf life is not long. In addition the tiny amounts of crystallization can easily ruin an otherwise perfect sign, requiring it to be rubber down and re-varnished. Just keeping the lid on isn't enough. Transferring to smaller, sealed containing does help. But once air is introduced the varnish will start to set.
The trick is to use a smaller container, such as a jam jar and then seal the lid with plastic bag between the lid and the jar. I tried using cling film but it fragments too easily. A thicker plastic such as a freezer bag works better.
And then, the clever bit, turn it upside down. This stops any further ingress of air and preserves the varnish for much much longer.
I tried it, and it definitely works.
If there is a slight leak its fine, but put the jar on a cloth to protect the shelf.
Only pour out what you need and don't put back any left overs because it has already started to cure.
The result is that the varnish remains in perfect condition right the way through to the last drop.
Keith
Hillsigns
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