What do you want to achieve?
Something like this:
A part that disappears with a smooth transparency tween, and when it becomes invisible, it does not collide.
What is the issue?
I don’t know how to script the transparency tween.
What solutions have you tried so far?
Right now, asking on the devforum.
Learning about Tweening would be what is needed in this case, you can make it so that when it is touched, a debounce is triggered so it does not tween multiple times, then when the tween finishes, make it so it sets the CanCollide property to false
There are some examples in the hyperlink (blue text) at the end of the article to learn how to create tweens