I saw a video of some one pouring resin in a mold,so i did a little research, i bought some resin,and some molds and magnets all from Amazon, it took me several tries and a big mess but it finally finished. The first pour i poured a small batch to make a templet,i marked all the holes that needed drilling then i marked the underside of the mold where i wanted the magnets, next was making the pcs i needed

This is a 1500 x 1500 Ox build

Probably cheapest DIY build youl see.