After 18 months of being bored, unable to pursue my motorsport here, I finally decided to take up a hobby that I had when I was a schoolboy.

I am making a radio controlled model boat in balsa wood. I am scratch building it from a 30 year old plan that I found in an old model magazine retrieved from my parent's attic. So far, everything has been going well sourcing materials and parts. However, I am unable to find Sanding Sealer or Cellulose Dope here.

I found a 500ml tin of Holz Schutz Grund which I think maybe sanding sealer but I don't know for sure. I can't work out what the usage instructions are in the store with my poor German skills.

Anyone know what sanding sealer and cellulose dope are in German?