Sandpapers are among the most versatile tools when it's time to remove plastic or resin wastes, or when you need to polish a surface.
The only drawback is that sandpaper has no rigidity, so it may cause unevenness in flat surfaces, or not sand at all in hard-to-reach spots. So it's often convenient to stick the sandpaper to a hard surface.
The most convenient alternative is using self-adhesive sandpapers; they cum pre-cut, and you just have to remove the protection, stick them, and start sanding.
These sets made by DSPIAE include 5 to 10 packages of 10 sandpapers each, of different grits. They work perfectly in conjunction with the aluminum sanding board.
We have to prepare each shipment individually as they are ordered, so allow it in 3-4 weeks to arrive in the USA/Canada (to be safe) and 3-6 weeks rest of the world, though they are usually delivered much faster.