I am looking for some way to spot the guideding sides of cross slide dovetail and carriage of a SB 10L lathe for scrapeing. I purchased a "strait edge" from USSR EBAY and no big surprise it is actually a hardened ateel cutting blade, quite sharp but also warped by about 0.015", included angle of 61 degrees. I do not have a surface grinder so not sure if there is a decent way to make this into a strait edge? It was $40 + $30 shipping so not a huge loss to write off.
I would like to find a tapered edge cast iron strait edge so I can maintain its flatness (or suitable piece of cast iron to start from). Some of the ones I have seen for sale seem pricy for a hobby but I may end up there anyway.
I have also tried using the disassembled taper attachment as a strait edge, the dovetail on the bottom is long enough and appears in excellent shape. This seems to be workable but I have no way to verify its flatness and the the angle is not smaller than the dovetail like most tapered edge strait edges I have seen in books.
I will attach a photo of the ebay listing so others can beware.
I would like to find a tapered edge cast iron strait edge so I can maintain its flatness (or suitable piece of cast iron to start from). Some of the ones I have seen for sale seem pricy for a hobby but I may end up there anyway.
I have also tried using the disassembled taper attachment as a strait edge, the dovetail on the bottom is long enough and appears in excellent shape. This seems to be workable but I have no way to verify its flatness and the the angle is not smaller than the dovetail like most tapered edge strait edges I have seen in books.
I will attach a photo of the ebay listing so others can beware.