Sandblasting
Sandblasting Precision Board HDU uses the same techniques as when
blasting any lightweight wood. HDU is made up of millions of tiny
cells so blasting is much easier and the sandblaster can get much
closer to the work surface. Since HDU doesn't have any grain, it
is important to set the air pressure to about 40-60 psi at the pot.
This reduced pressure still allows for fast blasting and subtle
detail can be created during the process. The blasting medium, or
grit, should be either aluminum oxide or medium grit silica sand.
Carving
Carving HDU is almost the same as carving wood but it is much faster
and easier. The same types of chisels, knives, and other surfacing
tools can be used. It is easier on the carver however since it has
no grain direction. Severe radius turns and angles are easier to
do and the carving tools don't have to be kept as sharp to achieve
fast, clean removal. A more creative approach can be used when carving
Precision Board because of the ease of removal. Precision Board
substrates save time because they can be purchased in large, thick
sheets which eliminates the need for laminating and planing.
Routing
Routing and cutting HDU is the same as wood only is much easier
on the router or saw motor. Deeper passes and faster feeds are all
possible because of the no grain cellular makeup.
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