According to "Internet Quorn Lore" I am now a member of the "I'm building a Quorn" club since it isn't required to actually have done anything yet. I hope I will get into the "I built a Quorn" club sooner rather than later. Here's my question: The book suggests using Precision Ground rods for the two base shafts and the vertical shaft where the motor/grinder is mounted (and that is just chapter one so far). The least expensive rods I can find are from https://store.diesupplies.com/precision-marshall-drill-rod-c38.aspx, I've purchased W-1 from them recently and have been happy with what they sent me. For now, it's between W-1 and O-1 rods (1.0" and 1.25"). Can anyone offer opinions or suggestions which of these two, or another option altogether, this amateur might go with? I'd like to reduce corrosion if possible with out too much expense.