Pokeball Slab Insert

Design an insert for the Poké Ball that allows slabbed Pokemon to be displayed securely. Includes a clip on the back to hold the Poké Ball lid in place. Please note that i made the clip to be 7.7 mm while the square for the pokeball is set to 8mm. This creates a pretty tight fit on my machine but let me know if i need to make a bigger version in case your machine prints more accurately than mine.