One of the most common applications of brushes is to remove the soft parts of timber.
For this process there a re automatic machines (type Tupi) or manual ones which use wire brushes to remove the soft parts of timber and showing up the hard ones.
For choosing the right brush is necessary to take in mind whether the timber is of hardwood (oak) or of softwood (pine).
Another typical application of brushes is to age or rusticate timber.
In some cases the user works with two types of brushes, one of wire to remove timber and the other of abrasive nylon to polish the surface and get rid of shavings coming from the first brushing.
In any case, there is no standard brush for this type of application due to the variety of possible finishings. Each client looks for a different finishing and needs the most appropriate brush for his need.