I don't know how you guys manage to find all these great vices? Were I live it's either buying useless cast iron ones or pay a prohibitive price for a new forged one. I was sick and tired after I broke two of the first kind and was not willing to go the second road. So I chose the third option and build my own. Here is my humble contribution. Kudos to John Heisz! Basically I followed his ideas, with a little tweak here and there. The only rectangular tube I could find in the scrapyard was on the heavy side (120 x 60 x 5), but I'm very satisfied how it turned out. Here are the parts. Lead screw is from the old vice. Don't look too closely at the welds, not exactly x-ray quality. Painted with Hammerite. Here it's finally on the bench. Opens to 16 cm. Very satisfying! Has a bit of wobble, but not too much.