Suitable cable chain

[AndyUK]

I think the advice I found was aim to fill no more than 60% - so I measured the diameter of each cable I intended to run through, and then treated them as squares to provide a safety margin (so an 8mm air pipe takes up 64mm2). Then get the total area, and divide by 0.6. That's the approximate internal cross section you want - the over estimate on the area means you'll have plenty of room for upgrades in the future.

Then I went shopping on eBay etc to look at common options and chose the bending radius to suit. Try to get the opening type so you can get the connectors through if you're using them.

[chillybo]

Thanks Andy thats a good point. Maybe It would be better if I buy some CY cable and spindle cooling tubing (and whatever else I may need) to get an idea of the size of cable chain.