IDEAS for 💎 DIAMOND DRILL BITS - Examples of Application

What are different shapes of diamond plated drilling bits for? Compilation of [my] bright ideas to address different domestic issues (not orthopedics, dentistry or manicure). Ways of applying Dremel bores or disks.
So, how to use
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00:20 big disk
02:26 middle disk with holes
03:29 sintered disk
06:53 small disk
09:22 bullet (grenade)
10:19 concave (inverse globular)
11:00 needle (cone long)
12:38 globular
14:02 cylinder
The similar video:
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► Let's Make 3 Useful Bits For a Drill / Dremel Rotary Tool - • Let's Make 3 Useful Bi...
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