I am a friend of old boards of the 70s and 80s. Have yourself a small collection. Unfortunately, I purchased sheets are not always in the described condition. With the above-mentioned cleaning kit I've really been brought each plate, which previously made problems again Zuum clean play. The kit can, of course, compensate for any deep scratches, but heavy dirt (not always visible) and minor scratches. I highly recommend this kit without restrictions. Incidentally, contrary to other allegations also very sparingly. I'll probably need for me no farther kit in this life. Conclusion: Highly recommended for home use perfectly!