Drilling lead under a scanning electron microscope - GIF

[Altair]

Drilling lead under a scanning electron microscope.



The homemade rig used to capture the images, 17:26 video:

Previously:

Steel cutting magnified - GIF
How tricone drill bits work - video
0.004" micro drill bit - photo

[metric_taper]

I recently found this channel by Ben Krasnow on YT. Lot's of interesting things he does.

[jimfols]

Here's another one I find almost mesmerizing.

[ibdennyak]

interesting watching the progression of the stress during the shearing action. It kind of demonstrates the advantages of lubrication or coating too.