Monday, January 10, 2011

Progress

The stove tool hook rack. The upsetting I mentioned yesterday is where the base of the hook buts up against the ribbon of metal that forms the rack to make a sort of flange. The neck of each hook is roughly the dimension of the original bar stock, they were drawn down to a taper and then bent to shape. I drilled holes in the strip and welded the hooks on through those holes from the back so no welding is visible from the front. For the past 15 years or so we have made do with nails stuck into the timber, but I pulled them to attach the rack.
Ideally one should be able to bulk up the metal as easily as one can draw it out, but the difficulty is that one must strike the end of the metal to bulk it up or 'upset' it and even a minor deviation in the hammer blows quickly causes the metal to deform off to one side or another and getting an even fattening is a challenge. Drawing down is a lot easier as the side of the bar is the target and small errors can be corrected because many blows are required to produce a gradual taper.
The drifted hole in the rebar isn't visible here, but the bar is on its hook 2nd from the back.