These are some game tokens I'm making for a friend that have embedded RFID tags in the print. This is the same technology "Skylander" toys use except they have a 2 part plastic base that they put an RFID sticker in.There is a sacrificial coin in the back that at a certain point in the build I pause the print so I have easy access to the cavity to place the RFID tag ~ .25mm thickness so the cavity is 2 layers tall. I resume the print after the tag is in place and any ooze while paused is on the sacrificial coin in the back. It "primes" the nozzle when it finishes the layer, then moves back to the token covering the RFID tag and finished the game piece.