If you're not familiar with electronics the macro photographs might confuse you as to how small all of this is. The MOSFETs he reworked by hand are 1 mm across

If you're not familiar with electronics the macro photographs might confuse you as to how small all of this is. The MOSFETs he reworked by hand are 1 mm across the longest edge. Wire looks like 0.1 mm, the individual strands in most stranded wire are this thick.