please allow to select to order “Only Top”/“Only Bottom”/“Top and Bottom” stencils. Offen in a design there is really only need for one stencil also paste structures are on both sides. The other use case is when board and stencils are already produced but some error is found by the end user on one of the stencils.
I hope this feature will be implemented soon.
Meanwhile I found a workaround for Kicad: before uploading the design, open the .kicad_pcb file with a text editor and remove the two lines related to the paste you don’t want to use.
For instance, if bottom paste is not needed, remove
(34 "B.Paste" user "B.Paste")
(layer "B.Paste" (type "Bottom Solder Paste"))
This modification seems to affect only the stencil not needed while preserving the rest of the design.
Tested only with PCB viewer (stencil not present) and with Checkout (stencil price decrease). I haven’t ordered anything with this modification, so far.