The injector coming with your sand art is needed for air regulation and water refill. To protect the sealant use only the injector that is included or use the needles we recommend. Different length of needles are needed for the different kind of frames. You find the right device in our shop.
For your safety you get a blunt needle which can’t be used for medical purposes. With those needles you can penetrate each airhole between 25 and 30 times. We are also offering pointed needles. With them you can inject up t 50 times.
