I tried capturing some of the geometry of this device. The holes are at angles and line up only when the plates are flat.It would not be too hard to make a DIY version of this thing for smaller rope using, say, 1/2 x 1 inch aluminium flatbar and the side plates off big roller chain links. The holes for the rope could be any size needed. One would want to chamfer or round over the edges of the holes, to be rope friendly. It is getting to be that time of year, anyway, for indoor projects in the shop.
















