I designed a homemade soap stamp block. Designed for use on a 2"x3" block of homemade cut soap. 

Add SVG as a modifier or a part. Project the SVG no more than 8 mm from the flat plane. I recommend a 1.75mm projection so the bar can be aligned against the lip of the stamp. 

Also recommend wetting the bar of soap  or the stamp prior to tapping the back side with a rubber mallet or a block of wood on top.

**BE SURE to invert/mirror your logo or it will not transfer to the soap properly.