Drill head specially design for metal details part. Neron N-004.
1. drill gunpla part where you want to add metal details, with 0.5mm drill bit.
2. Select the suitable size N-006 Round Drill head, and start scraping/drill the plastic around the holes.
3. Stop scraping once you reach the desired depth.
4. Place the metal details part with same width in the holes.
This tools also can be use to make steps which will enhance the visual and look more details.