| The Craftmans Shop > New from Old |
| The Sequel - Oh Blimey I bought a CNC Lathe (Beaver TC 20) |
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| awemawson:
The oil is ISO68 way oil. My concern was any sulphur in the oil would possibly promote corrosion, and way oil is sometimes sulphurised. . . . but I'm no chemist :scratch: |
| djc:
If you are concerned, is there any way of potting it in epoxy after soldering the leads on? |
| awemawson:
On the list at the moment is: a/ Painting the connections with 'liquid insulation tape' b/ fitting a pipe extension out and above the oil and putting the switch in the electrical box, but need to check if there is room. I'm getting very adverse comments re oil / sulphur & copper on the welding forum - thread here: https://www.mig-welding.co.uk/forum/threads/any-oil-chemists-on-the-forum-copper-corrosion-in-sulphurised-oil.105672/#post-1673615 |
| RussellT:
The original connections are presumably brass crimped on to copper. I suppose they might be the cause of the original fault but it doesn't look as though corrosion has been a problem there. Solder the wires to the switch and there will be no mating surfaces to corrode. By the way I wondered if the original numbers on the pressure switch said 12.0 Bar. Russell |
| mattinker:
Hi Andrew, I would be inclined to inclined to autopsy the switch, turning the end down on the lathe to release the insulation. I'm curious about where the fault actually is? I know it won't fix anything, but interesting to see whether corrosion is the cause of the problem and whether the sulphur in the oil is corroding the brass. Cheers, Matthew |
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