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| kvom:
Do you have room to bore out to 8mm? Then you could use the 8mm drill rod. I lapped mine with toothpaste to get them to fit. |
| spuddevans:
--- Quote from: NickG on March 24, 2010, 03:47:04 PM ---Toolpost grinders look very handy indeed. As long as you can keep it still there's no reason the dremel shouldn't work with light cuts. Was just thinking you could buy some 6mm silver steel or something and it should be a really nice it in the reamed bore. I know it's nice to try and use what you already have though. Nick --- End quote --- I was thinking of attaching it to a QC toolholder in some sort of fashion. I did have some 6mm silver steel, maybe the better thing to have a cleanup and maybe it'll show itself. --- Quote from: kvom on March 24, 2010, 03:50:11 PM ---Do you have room to bore out to 8mm? Then you could use the 8mm drill rod. I lapped mine with toothpaste to get them to fit. --- End quote --- That is an option, there might just be room, the only thing is I only have a 6mm machine reamer, the other reamers I have are hand reamers, you know the kind that have a fairly long tapered section at the end, and so no use for a blind hole. I wont be able to get out into the 'shop for a couple of days, so I will be giving the matter some more thought. At the moment I am thinking I will try to find out if I have any 6mm silver steel, if I have then I will remake the piston-valve out of that. If not I may make a heath-robinson toolpost grinder and work with the 8mm stock I have, and if that doesnt work I will investigate the bore in case that somehow it is not straight/parallel/true/tapered. That's the plan anyway, it is good to have a plan, even if it doesnt get stuck to :coffee: Tim |
| madjackghengis:
--- Quote from: NickG on March 24, 2010, 03:47:04 PM ---Toolpost grinders look very handy indeed. As long as you can keep it still there's no reason the dremel shouldn't work with light cuts. Was just thinking you could buy some 6mm silver steel or something and it should be a really nice it in the reamed bore. I know it's nice to try and use what you already have though. Nick --- End quote --- When I needed a tool post grinder to grind the valves of my tractor (53 Farmall Cub), I took a piece of inch and a half angle, about three inches long, welded a piece of half inch square hot rolled to the outside of the corner of the angle, with two welds, leaving a slot between the welds, used a large hose clamp to clamp an air die grinder in the angle, and held the square of steel in a quick change tool holder and held down the air lever while traversing my top slide at 45 degrees, grinding out the divots in the valve faces. A dremel would fit the same way and not need the handle held down. Mad Jack |
| sbwhart:
Tim The dremel may work at a push but you'll risk knackering its bearings, I'm led to understand that dremel bearing are not very good in that sort of application. Stew |
| Bluechip:
Tim, Mad Jack et al. Stew is 100% right ... Dremels DO NOT LIKE SIDE THRUST ... :( I knacked one like that, fortunately got it replaced under warranty, 2 weeks old :beer: Strangely enough, I believe I was once told the el cheapo Draper version is more robust in this respect. Cannot say by my own experience, never had a Draper. Gave the Dremel away .. found little real use for it. Dave BC Dave BC |
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