re: mixing of the sands box

I really don’t know. I saw my cousin had a plane black rectangular box with glass and one hole. So I just created mine. Added two holes of which was very easy for both of us to pour the sand in. My cousin stated that the one hole made a mess. Plus they didn’t get a cool sand design. One thing is make sure its sealed completely. I would just go off of mine. Change the design make one horizontal with a elongated slot so the can pour the sand in a fashion to get a wave effect. Do one as a quater circle etc.

https://pic.craftisian.com/o/1422039145630623147044_ytu3ei!