Yes, that would be Princess Auto. We have one here in Regina, but they have no metric drills.. They don't even show metric drills in the national catalogue. It's a great store otherwise! I ordered my metric drill assortment through eBay, after finding a seller who ships from stock in Canada. Should be here this week or early next week.
I'll have a look on your tinkercad page, but I already found an X-carriage that printed well (from glucz). I am thinking I might try to design a magnetic version like the one I saw on facebook.