Spindle Speed Controller Question

[Boyan Silyavski]

Air cooled = less installation work, simpler machine, less possible problems, less space, zero risk for leakage causing problems, no chemicals to handle, simpler motor, less risk for electrical problems...

Yes, I know that the price difference is marginal. I did NOT mention saving money since it is not a lot you can save, even though I doubt you can install a water cooling system for £3, and in fact I would not even bother buying a pump that cheap.

Remember that this is my opinion, if you have a different opinion that's fine, but personally I prefer air cooled. YMMV

Its a question of choice

Water cooled spindle :
1 Does not care about wood or metal dust , so will not clog, and dust there is , believe me on that. Even a vacuum shoe could not cover all typical scenarios.
2. Will make negligible noise, which will not matter as usually cutter makes more noise. But not so with small cutters on plastic or metal. There its virtually silent
3. In fact there is no need for pump at all. Connect to water using garden hose connector and transparent cheap tubing and let it run. it will wast how much? 5 $ for one year
4. A good proper spindle pump is 35$, an italian brand garden small pump is like 20 euro here. from a second hand market 1 euro and will run forever. yes even a 3$ one. The pump inside have no elements that could fail. Ceramic rotor and plastic fins. Water is the cooling and bearing.

When i bought my first spindle nobody had run it more than 5 months or disassembled it. Spindle bearings were a sacred subject. Water cooling was sth from science fiction. All were using Kress or Dewalt , etc. routers. Now all we know water cooled spindles are good for years to run. bearings are cheap. Most come with front ceramic bearings. So i don't see why the doubt.