We recommend not to touch the model as it is very sensitive. Especially the antennas are very thin and can easily break by touching them.
The cleaning of dust is preferably done with a hairdryer on a low, cold level. Alternatively, an air pressure spray can be used. Due to the high pressure of such sprays, you should start cleaning at a certain distance and gradually reduce the distance.
The base plate can be wiped carefully with a damp cloth.