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| NickG:
Will have to try that again madjack, thanks. Well I started an attempt to repair the vice last night - haven't uploaded the pics yet but I may have bitten off more than I can chew! It's a simple component to repair it, but the thread itself will be the stumbling block. From what I can tell, it's an 8 TPI acme thread - well it's certainly sort of square bottomed with slightly tapered sides - I guess all I can do is measure the major and minor, pitch and grind a tool to fit the profile - suck it and see. I could have chosen a better material - the only lump in my scrap box that looked about the right size was a lump I hacked off the back end of a massive old cutting tool. It hacksawed and seems to machine ok but you can sort of tell it's quite hard. Will have to do the thread in many passes I think. I swore I would only have 1 attempt at a repair but it's so simple in theory that I might have another go if the first doesn't work! I've got that cast round gunmetal that may be a more suitable material - easier to work with although the wrong shape to start with. Anyway, all will become clear when I post the pics. :worthless: I'm not sure what it originally looked like as that half nut bit does have a bit chipped off it, but it also has a machined surface and what looks like 2 snapped off pins or screws. I wonder what was on top - whatever it was is missing. It's a good vice though so worth at least trying to save - and save £65 at same time. Nick Nick |
| DMIOM:
--- Quote from: NickG on March 12, 2010, 04:34:12 AM ---........I've got that cast round gunmetal that may be a more suitable material - easier to work with although the wrong shape to start with. ...... --- End quote --- Since you're already into :proj: diversification mode, why-not re-cast it into the right shape? |
| NickG:
Sounds a long way round, haven't got any casting gear just need to mill some flats on it. |
| DMIOM:
sorry for going off-topic - was meant to be a joke :wave: |
| madjackghengis:
By the way Nick, that piece of gun metal is probably your best bet for a good, solid vise nut. It will bear a lot of pressure for years and wear slowly, yet it cuts pretty easily, it's just a matter of setting up a good boring bar and getting a cutter bit good and square with the bored hole. Vises are expensive, and only get scrapped if there simply is no way to save them. By the same token, an old shaper or planer vise at the right price needing rebuilding is better than a brand new vise made in some foreign land which uses pictograms, almost always!! That gun metal should silver solder with hard solder very well, and strong, if you need to put ears on it, of something to attach it to the vise body, that or brazing will work well. Good luck with the fix, hope to see it working again. mad jack :headbang: |
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