If you have not solved your problem try this.
Printers use a photo polymer plate material to make printing
plates from, these plates use a UV source(black light) to set off
the photo polymer.
Your need to get the child’s finger print image on a piece of
paper, the image needs to be clean and sharp).
Scan the image on photo shop and clean up the details.
Save and print the image on a transparency sheet as a
reversal (a negative of the actual print). These steps can be done
by anyone that knows photo shop and has a printer that will do
At this point you should have a transparency of the child’s
finger print as a negative image.
Rio grand has a system called “Model Master” (expensive) you
can buy the polymer sheets from them. I like the yellow,
aluminum-backed plates. Call and Rio Grande for a catalog (it’s
on page 37).
With the transparency and the photo polymer plates you can
expose the plate and have a plate with the child’s finger print.
This plate can be used to make a rubber mold.
Using the rubber mold you can then inject a wax.
This process is simple and if you take one step at a time you
should have a great image to cast.
if you need more info respond back!