Halfords clear lacquer is popular, but spray it on too thick/too close and it will eat into and crack the water based acrylics. A few threads on here that I've looked at as I recently wondered the same thing. Best advice I read was a couple of thin coats of Halfords Clear Lacquer and dry it immediately with a heater/hairdryer. Had no problems using this method.
Forgot to add; let the acrylics cure for at least 24hrs before applying the lacquer.
Last edited by Verde; 18-04-2018 at 08:02 PM.
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