I present my own lifecounter desing without external pieces like screw to link both parts.

The photos are from a personalized version. Here you have a model without design, its easily modificable in Fussion 360 or similar.

When you print both parts you only have to press them and they will be linked, it´s not neccesary to use glue or screws.

Remember this information about the different parts:

1. Inferior part, numbers (1-10) are separated in different bodies to avoid problems with the paint option in BS.
2. Superior part, its possible to modify and add an personalized design, if you add a new body part, remember the maximun thicknees of this part would be 0,3mm, to avoid interfering with the spin mechanism.

Very important, it´s preferible to use 0,2 nozzle to reach the best resolution of the numbers and if you are going to personalize it with a logo, initials……..but its possible to print with 0,4 nozzle