There is a tiny triangle hole in my mesh. how can i fix that??
Hi Inumaki,
if it's a hole, you can go into Edit Mdoe, select it (ALT+Cliick on a border Edge of that triangular hole) and F to 'fill' it.
When it occurs during Beveling (and changes size, when chaging the Bevel), it's probably not a hole, but overlapping Geometry. Reduce the Bevel amount untill it's gone.
How tiny is tiny? Maybe it's so tiny is inconsequential. But nah, either way it has to be fixed. As Martin said, you can fill it or maybe it's a beveling issue. There's one other thing that once happened to me, it was silly, but what I thought was a triangle was a jagged shadow. I had shadows turned on in the viewport and I was like what in the world is that and why can't I get rid of it.