The ring was moving to much to my taste and i could not assemble it they way i liked it. it was also to low for me, the printhead kept bumping into the ring
i added holes for heatmounts and holes for M3 bolts. i also added holes for 6mm magnets (6x2mm 4 needed in total)
you need to drill 2 holes 3,2-3,5mm in the front part to mount the magnet block
you need 6 heatinserts M3 in total, 4 6x2mm magnets and 6 M3 bolts