mrbadexample":5m2kkday said:I've got a couple of oilstones - does anyone have any idea what sort of grit level this is likely to be?
What does it mean by 'combination' stone? As far as I can see there's no division in the middle that would indicate different grades per side so I think it's all the same. From what I can make out, it seems to be a fairly decent one.
mrbadexample":13ikqdqd said:I've also got this one that someone's carefully made a nice box for. It feels completely smooth to the touch so must be a high grit level. It's not flat, unfortunately.
I assume it must be a decent stone for someone to take the trouble to make the box for it, and it's seen a lot of use. Can it (does it need to) be restored?
mrbadexample":2tfitdfn said:I've got an old brace and a load of bits of various descriptions. The brace is no use at the moment as the jaws are knackered.
Is there anywhere that supplies replacement jaws please? They're the alligator type with the captive spring.
AndyT":274getdq said:I think your stone is probably better than the one that was in the box. So possibly a fine man made oilstone.
I have seen combo stones where the division is nearly impossible to see, although generally you can see at least some differentiation (in colour if not in grit size, sometimes the two sides are not that far apart in grit number).mrbadexample":639ju7pc said:What does it mean by 'combination' stone? As far as I can see there's no division in the middle that would indicate different grades per side so I think it's all the same.
Wrap it in newspaper for now. Or put it in a ziplock back if you like.mrbadexample":639ju7pc said:How should I store it? Presumably left partly-exposed in half a box isn't ideal.
Very nice box! Could do with a good clean but that's a better-than-average example.mrbadexample":639ju7pc said:I've also got this one that someone's carefully made a nice box for. It feels completely smooth to the touch so must be a high grit level. It's not flat, unfortunately.
Thorny issue I'm afraid, be prepared.mrbadexample":639ju7pc said:Can it (does it need to) be restored?
This may sound bonkers but the best place to source replacment jaws may be inside the chuck of another brace. And in the UK this doesn't mean you have to overpay for them!mrbadexample":639ju7pc said:Is there anywhere that supplies replacement jaws please? They're the alligator type with the captive spring.
ED65":33jm14z5 said:Very nice box! Could do with a good clean but that's a better-than-average example.
ED65":33jm14z5 said:But the first thing you should do is check the underside – if you can get it out of the case! – to see if this is already flat. If so you can just use that side.
ED65":33jm14z5 said:How bad are the existing jaws?
Cheshirechappie":2m273avs said:I'll just say that with a bit of a clean-up, those two stones used with some thin oil (3-in-1, baby oil or mineral oil, which are all pretty much the same thing) you have everything you need to hone and polish straight-edged tools in those two stones. Add a grinder of some sort, and you're all set!
AndyT":1fll1hkl said:I was clearly being too subtle when I said it got the shape it has because the last owner used it.
Bm101":fco3cob7 said:Can't offer advice but don't bin the plough irons whatever you do. Sell them. Even if you give them away. Just don't bin them.
I'd normally start cleaning with soapy water but I wouldn't risk warping a box like this so I think white spirit and old toothbrush to begin with, followed by more white spirit and regular changes of kitchen paper. When it's as clean as it'll get then BLO and steel wool by all means.mrbadexample":3vsxscmp said:BLO and steel wool? :?:
Ah well, worth a shot! So flattening the top seems to be the way to go.mrbadexample":3vsxscmp said:Hmmm...it was glued in once, rough side down, apparently. :lol:
That does look bad but remember they were that way the last time it was used. Something else to bear in mind is that the pyramidal block on the end of brace bits is part of what the jaws grip to, internally where we can't see.mrbadexample":3vsxscmp said:Shot.ED65":3vsxscmp said:How bad are the existing jaws?
My thinking exactly. I was going to link to a previous post of mine but it's in a verrrry long and contentious thread that you shouldn't get distracted by so I'll just quote it here.mrbadexample":3vsxscmp said:I'd be happy to try and hone a gouge on it, but a plane iron? A 1" chisel? I don't know how I'd do that. :?
I strongly strongly strongly advise you to start with flat honing surfaces, whatever they are, and keep them that way if they do require maintenance. You can use a dished stone later on when you know what you're doing but starting with one is a recipe for disaster. It's especially bad if you use multiple stones and only one is dished, and even worse if all are dished but with different curvatures! This is something that can see you chasing your tail for hours, plus can contribute to struggling with getting consistently good edges for years. And I do mean these times literally; I've spoken to numerous people online and in person who took up woodworking long before I did and still can't get edges they're happy with every time. And that's without the added complication of a curved honing surface!
Flat stones (any flat honing surface) are so much more versatile I can't emphasise it enough. You can hone to and fro or side to side, along the stong as well as across, anywhere on the surface, as mood, space or circumstances dictate and always get the same results. You cannot do this on a stone dished in one direction much less two.
Only on a flat surface can you do the bevel and the back, on any chisel down to the narrowest available up to the widest plane irons made, as well as hone a razor blade, a marking knife or an awl if need be, again in any direction anywhere on the surface with equal ease. Flat honing surfaces handle flat bevels, convex bevels or ground concave bevels; a dished stone can really only do one of those and not even as well.
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