**you need to download and print the replacement cap here : https://makerworld.com/en/models/58593#profileId-60413 **
Here is a model i made to decorate your A1 mini for any ocasion :)
you just need to remove the front screw of the cap , and replace it with the new unit !
they are swapable so you leave the cap there and replace the model for a new one super easily :D
i will upload a bunch of model to put on top (mario , hallowwen , christmass, one piece , music band etc !
if you would like to see all the model avaible for it go on my profile here : https://makerworld.com/en/u/3949078249
Thank you :)