Parallel ports problems

[cropwell]

It makes more sense, now we realise you are talking about tool cooling. I think you will find a windscreen washer pump a problem, as I said swarf will destroy it in seconds. Why not try putting a settlement chamber in front of the pump, with a couple of neodymium magnets in it to pull out fine ferrous particles. You could combine that with a filter, like an airline type filter. The pumps are usually a little neoprene rotor and not really suited to pumping oil, which is generally too viscous anyway.

On my lathe I use a domestic heating pump, which pumps up to a reservoir with a float switch. The soluble oil mix that I use doesn't seem to stain, but the bloody stuff gets sprayed about the workshop. I have to make some acrylic shields which will stop this and also guide the sudsoil back to the swarf tray which drains into the reservoir.

In general, I like the idea of repurposing, especially if you already have the bits or can get them for nowt. I must admit that a number of times my bodging has turned round and bit me.

Cheers,

Rob