Sanding hand grip

I ordered some sanding papers discs, supplied with drill adapter.
But I needed to gently sand an object, by hand.

So I created and printed this grip and glued some velcro tape on it.

The actual size is fit for 3 inch (75mm) sanding discs.
The little one is for 2 inch (50mm) sanding discs.

25% infill is good enough for a good rigidity and strength. Tried linear for the big one and 3D honeycomb for the little one.

Open source link: https://a360.co/3m1VnE4