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| Mill vice backstop |
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| Bernd:
Bogs, After I wrote that I went back and ponderd that picture for a while. Knowing you I was wondering how you even got to that point. I figured you might have conned the other half into picking it up for you by telling her it would build up her biceps. :) Glad you got a good job out of it after all that heavy lifting. Makes all perfect sense now. Ah yes, patina. I should have known. Live and learn. :lol: Bernd |
| Darren:
I was going to make some pillow blocks for my engine build tonight. Having realised how accurate these need to be I decided that a vice backstop was high priority. So I basically copied John with his design. My vice was already threaded on both sides and tonight I finally found a bolt to fit. Alas it was too short, but it did allow me to find out what the thread in the vice was. It turned out to be 3/16 something or other thread. That's just a Nats whotsit smaller than 5mm at 4.762mm. Even better the thread form was the same pitch as far as I could tell. A 5mm bolt wouldn't go in so I simply tapped the threads with a 5mm tap. Job done, easy for a change :) Now for the stop, An old lathe tool with the tip missing....no not guilty, it came to me this way somewhere along the line... As I said I basically followed Johns lead The slot turned out to.....erm..I dunno, didn't measure it :scratch: I didn't have a 5mm milling cutter so I has to use a 6mm and then I cleaned the sides up to finish them off. So now I needed a bush, (John, it machined this bit of steel beautifully, it always left a rough finish on steel before :thumbup:) Cut the end off with the bandsaw, and milled it square Time to de-bur the edges. I used to use emery for years and years, but lately I have really come to appreciate these diamond plates. I think they are wonderful. Remove metal fast, accurately and give you a good feel for what you are doing. The finish is also superb, like using 1000 grit paper but at the speed of 240 grit. A closer view, I also used one to chamfer my toolpost made of that really tough metal. Finished stop fitted to the vice, notice I screw a long bolt fully into the vice nice and tight. I then adjust the stop with a nut and not the bolt itself. This is much kinder to the vice cast iron threads. Now that's done maybe I can get on with the engine build...... :) |
| ja2on:
where can I purchase a diamond plate ? |
| Darren:
I got mine down at the Saturday market stall in town. About a fiver each, I got three grades but you only really need the coarse one. The medium and fine are nice to have but not essential. They will last you a very long time. Don't get the ones with holes in, they are rubbish for our use in my opinion. And they flex. Make sure you find one that is solid that you can't flex. Let me know if you have any trouble and I'll see if my chap has any more, he didn't last time I went but you never know. BTW, credit goes to John for these, he put me onto them. |
| Darren:
Sorry John I've hijacked your thread...... :bow: |
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