View Full Version : Metal shielded cabling
05-02-2010, 08:09 PM
The DRO on my mill is connected to the sensors by some spiral bound metal cable cover. Could anyone tell me where I can buy this covering as I want to use it to shield the connects from my steppers to their control box. Also I am thinking of buying/making a new control box out of Aluminium (using home made wooden box at present). Can anyone suggest a source, I do not want to use a full sized PC case but a box say 400 x 400 x150 mm would do fine.
05-02-2010, 08:36 PM
Full steel wrap flexible conduit is *******g expensive (~£100-200 for 25m) and primarily for mechanical protection. If you want to screen the cables electrically then use a good foil screened cable (also expensive).
a cheaper option is metal/plastic (basically a plastic coated spring), again this is primarilly for mechanical protection.
If you can use thin cables then this 16mm stuff is not too badly priced (£23 for 10m)
05-02-2010, 10:54 PM
I thought the consensus was that the cables to the steppers do not need shielding as they are twisted pair!
05-02-2010, 11:15 PM
Twisted pairs are far from perfect and don't stop RF interference getting into your device (i.e. from a plasma cutter)
07-02-2010, 10:07 PM
In the kit car world, shower attachment pipes have been used for cabling (although it's primarily for appearance rather than shielding - but it would have the same effect).
I've seen £3 for 2m lengths on eBay:
Although it does say £4.99 later on - which means for 10m, it would be £25. So similar to the Farnell price...
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