of tactile sheets on common FDM printers Quite interesting (and not overcomplicated) technique.

3D Printing
,
1

#3Dprinting of tactile sheets on common FDM printers
Quite interesting (and not overcomplicated) technique.

More at 3ders.org - Japanese engineers create tactile 3D printed surface patterns using clever technique | 3D Printer News & 3D Printing News
【UIST2016】 Thickness Control Technique for Printing Tactile Sheets with Fused Deposition Modeling - YouTube