My Rong Fu, Warco Major, has a 115mm diameter column, featuring a robust 16mm+ cast iron wall thickness. Eat your hearts out you square column jockeys. Wound to the top I get an amazing 520mm between the spindle nose and the bed. The head clamps solidly to the column with two 12mm bolts, no possibility of movement. It doesn’t take an apprenticeship to realign the head after adjusting the height, all you need is something to align it to. You only have a rotation to worry about, how about bumping it into something?
My knee mill has 335mm twixt spindle and bed and needs .186mm of packing to remove a slight nod. Why did I buy it? I watched too many Mr Pete movies on YouTube. He touches off, locks the spindle, zeroes the knee dial, raises the knee to cut depth and then locks it. I have to admit that was probably my number one reason for buying it. Do you really need a “good” reason?
Still kept the Rong Fu, just in case 🙂
best
Robin