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| machining rough castings |
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| Pakrattuk:
Cheers for the drawing, and probably right about the magnetic chuck idea - it would have been an excuse to get one though :-). I'll give it a go as you suggested, just trying to end up with something useable. Pakrattuk |
| mexican jon:
--- Quote from: PekkaNF on May 26, 2015, 01:31:04 AM --- --- Quote from: mexican jon on May 25, 2015, 04:22:46 PM ---I'd machine them on a magnetic chuck :beer: --- End quote --- Would these stay on magnetic chuck on their own? Pekka --- End quote --- I don't see any reason why they wouldn't :scratch: I regularly grind smaller pieces on my surface grinder :ddb: |
| Fergus OMore:
I think that it refers to the number of poles in magnetic chuck which varies and some will not hold small items- which unless there is bar, will shoot off. I have one which does, one which doesn't. However, the job is simpler if a vice/vise is used and the sides are made parallel by filing, with an angle grinder or even a DE grinder or belt sander. It isn't difficult and failing all of this, why not a bit of a £1 bottle of epoxy resin on a face plate? When the job is done, heat up and knock off. |
| PekkaNF:
--- Quote from: mexican jon on May 26, 2015, 06:23:49 PM --- --- Quote from: PekkaNF on May 26, 2015, 01:31:04 AM --- --- Quote from: mexican jon on May 25, 2015, 04:22:46 PM ---I'd machine them on a magnetic chuck :beer: --- End quote --- Would these stay on magnetic chuck on their own? Pekka --- End quote --- I don't see any reason why they wouldn't :scratch: I regularly grind smaller pieces on my surface grinder :ddb: --- End quote --- Castings are often rough and awkward shape and surface grinder is different animal than milling machine, isn't it? I would be too chiken to try. Maybe you could get away if you butt it against a parallel or something that has more "grip" on magnetic table/chuck AND a milling cutter that does not lift the piece? Rough pieces can be held in vice if some aluminimum/copper plate/angle/rod packing is used. I was assuming that there is milling machine, because "flycut" on opening post. |
| Pakrattuk:
You were right to assume milling machine - thanks for the suggestions |
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