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| offset holes |
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| kvom:
Another possibility is using an annular cutter on the mill. |
| daz:
Thanks for the replies guys, I know people say there is no such thing as a stupid question but you must get bored of answering this stuff time after time so I really appreciate it. Bernd, unfortunately I do not have a faceplate either. kvom, I have never even heard of one of those before, google is going to start charging me soon. Thanks to a very generous person I now have plans for a project that will A: teach me loads about machining, B: Keep me occupied through the horrible winter months when I can't go out fly fishing, and C: Give me a useful and practical machine. The only problem is I have never attempted anything so complex before (to you guys it won't be) and the mill and lathe I have available to me are just not set up for stuff like this, they didn't even have a set of clamps or parallels for the mill, just a vice and a couple of cutters. I have made tools, fixtures, machine parts etc but nothing to any degree of accuracy, 0.02mm is about as close as it gets for me so for the last 24 hours I have been reading over instructions and looking at the drawings to see what parts will be easy and which parts will pose some challenge. I have come to the conclusion that you guys have some serious skill to turn out the work you do. Hopefully once I have everything right in my head, and the right tools at my disposal, I can start a new thread in the projects section, but it could take a while. thanks again daz |
| sbwhart:
I like the two angle plate set up Jason, that ones filed away :thumbup: Stew |
| jim:
you could bore it on the lathe in a three jaw. just put shim under one of the jaws, clock up the o/d untill the offset is correct |
| Jasonb:
--- Quote from: jim on November 13, 2011, 01:08:48 PM ---you could bore it on the lathe in a three jaw. just put shim under one of the jaws, clock up the o/d untill the offset is correct --- End quote --- Not the safest method with rectangular stock as the shimmed jaw will not be pushing against another jaw, and the centrifugal forces could throw the work out of the chuck. Dhis method is OK for round objects like eccentric sheaves where the shimmed jaw pushes the work against the other two. J |
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