... since, shame. Rob posted: 16 Dec 2019 10:46 from: a_nummelin Rob Manchester wrote: Thanks Martin/John, The US model is rather expensive( around £130 inc shipping and Taxes) but would probably be great. I have posted on RMweb here to see what the GW one is like. Thanks Rob Photo is just to show the GW device, in use it should be in a more substantial vice. I've measured the grooves at 1.6mm wide by 2mm deep and 1.3mm wide by 1mm deep. 1520_160554_380000000.jpg I've never used it for rail but bullhead looks easy: could flat bottom be done by just having the rail foot in a groove? Ideally one would turn a groove to suit the rail profile, but if one can do that it would be better to build a unit from scratch completely. posted: 16 Dec 2019 22:41 from: Andrew Barrowman a_nummelin wrote: I've never used it for rail but bullhead looks easy: could flat bottom be done by just having the rail foot in a groove? Ideally one ...