  We have examined the influence of impact angle in collisions between small
dust aggregates and larger dust targets through laboratory experiments. Targets
consisted of \mum-sized quartz dust and had a porosity of about 67%; the
projectiles, between 1 and 5 mm in diameter, were slightly more compact (64%
porosity). The collision velocity was centered at 20 m/s and impact angles
range from 0{\deg} to 45{\deg}. At a given impact angle, the target gained mass
for projectiles smaller than a threshold size, which decreases with increasing
angle from about 3 mm to 1 mm. The fact that growth is possible up to the
largest angles studied supports the idea of planetesimal formation by sweep-up
of small dust aggregates.
