How to Make a cheap grind box
For this project you will need 2 Wooden palettes (long as you can get), angle iron (coping made from steel), Sheet of ply (or any other wood will do fine) and the usual tools like nails, hammer and saw. Stick the two wooden palettes together using glue and make sure they're dry before using them. Cover them on all sides using the ply wood. Next, place the angle iron on the side of the top palettes, for grinding. Leave it all to dry and make sure it doesn't bend or break before using it.