(For John White):
Hello,
I have a couple of questions. First, however, I’d like to say thank you for the video on the “New-Fangled Bench.” I’m about to start building my own bench, and I thought I had my bench design worked out, but now . . .

1) I have a 6-inch, 3450 rpm grinder, and I would like to put one of the new cooler-running grinding wheels on it. The wheels on it now are 3/4-inch wheels, but I would prefer to put the wider 1-inch wheel on it. Unfortunately, there don’t appear to be enough threads left on the arbor to support the extra 1/4 inch of wheel. I was wondering if I could safely replace one or both of the large cup flanges on either side of the wheel with a large washer, which would be thinner and possibly give me enough room to install the 1-inch wheel. Does this sound reasonable to you, or would it be unsafe? Do you have any suggestions?
2a) I have four stationary machines, all Powermatic, and I would like to run them all on 240 volt . That’s the only option for the 3hp table saw, but the drill press, bandsaw, and jointer are prewired for 120, though convertible to 240 by switching the motor leads. My question relates to the type of plugs and receptacles I need. The circuit I will be using was previously used for an electric dryer; it’s wired with 10-3 with ground (I was planning to disconnect the neutral white wire, leaving two hots and a ground). The circuit is protected by a 30-amp breaker. I’ll be using only one machine at a time, so one circuit will be sufficient. The 240-volt plugs and receptacles recommended in the owner’s manuals look sort of like regular 120-volt household plugs, but the blades on the plug are horizontal rather than vertical — like two dashes with a period above and between them. The only 240-volt plugs and receptacles I can find that match this configuration are 15-amp plugs, unless I go up to the gargantuan plugs for large appliances. The saw has the largest amp draw, and at 240 volts, it’s less than 15 amps. Would you go with the 15-amp plugs and receptacles, or would you advise 20-amp or larger?
Thank you for taking the time to respond.
Robert