Where can i find a punch to cut 28.4mm diameter holes holes in sheet metal?

Check the Grainger catalog.


http://www.grainger.com/Grainger/wwg/sta鈥?/a>





Possibly somewhere in this section:


http://www.grainger.com/Grainger/wwg/sea鈥?/a>





Or, call them at 1-800-323-0620 and they can probably advise you of other sources.


Also, request they send you a copy of their catalog.