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| The Artful Bodger's nutating engine! |
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| John Hill:
Not bad news at all John, what I dread is having it all assembled then being unable to get it apart again! Super glue was chosen after our discussion here about boiling water etc etc. The joints are not really all that tight in fact a couple I had to tighten up a little by putting dot punch marks on the shaft, I know that about knurling and used it only yesterday on another little job but I thought it might have been impossible on such small shafts, my knurler is one of those 'push against' rather than 'pinch me' style fandangles. There will be much rejoicing if it actually runs long enough to shake itself to bits at which time I will be looking for the more appropriate fixative! Oh, I must take you to task for your comment regarding broken cups, it is not OK for sticking broken cups together as in that application it much prefers to stick crockery to fingers etc! Thanks for your comments John. |
| bogstandard:
Sorry about that, but it is better to be informed than ignorant (I am no way implying you are). Actually the only time I use my scissor knurl is when doing small shafts, it hasn't got the grunt to be able to knurl bigger stuff. --- Quote ---it is not OK for sticking broken cups together as in that application it much prefers to stick crockery to fingers etc! --- End quote --- Instant, but fragile castanets John |
| John Hill:
Bogs, in the field of model engineering, in fact metal working in general, you have my permission to consider me as woefully ignorant! :beer: I sort of have it all together right now though the frame is clamped together with a big bolt and the cylinder is held in place with magnets. The nutation effect is actually better than I expected but there is a lot of friction which I hope is due to no ports having been cut yet. No play today, work all day then going out this evening. :coffee: |
| rleete:
What about pinning it together? Use spring pins for the testing, and it you leave them a bit long you can pull them out. After testing/fitting/tweaking, you can replace them with press fit brass pins. |
| John Hill:
Good point Rleete, I will bear that in mind when I come to fixing the flywheel(s). :thumbup: |
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