Hi
i have just purchased an Alfred Herbert drill. The gib for the table is cast and has broken as per the pics. The table is raised and lowered on dovetail ways just like a mill. I am contemplating best repair and seek your advice.
I am thinking of brazing and then stiffening the gib with steel flat screwed to gib. The drill table is massive thing (perhaps 200kg) and clearly caused the gib to flex as it went up and down. This suggests that the table and gib are not quite mated. The gib does rock slightly when in place.
So several challenges for me. Brazing it and keeping it flat, is one. Another is mating the gib to the table (probably a scraping job) so that it does not rock. And the third is mating the steel reinforcing flat to the gib so I don't stress the gib again when I screw it together.
I would appreciate any advice. I am not sure I have necessary skills to make a new gib.
i have just purchased an Alfred Herbert drill. The gib for the table is cast and has broken as per the pics. The table is raised and lowered on dovetail ways just like a mill. I am contemplating best repair and seek your advice.
I am thinking of brazing and then stiffening the gib with steel flat screwed to gib. The drill table is massive thing (perhaps 200kg) and clearly caused the gib to flex as it went up and down. This suggests that the table and gib are not quite mated. The gib does rock slightly when in place.
So several challenges for me. Brazing it and keeping it flat, is one. Another is mating the gib to the table (probably a scraping job) so that it does not rock. And the third is mating the steel reinforcing flat to the gib so I don't stress the gib again when I screw it together.
I would appreciate any advice. I am not sure I have necessary skills to make a new gib.
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