I found a car window washer tank in my junk box. Really I could not remember how I had acquired this. I tested it and it worked! So I decided to make a power cutting fluid feeder using this. My former gravity feeding one was bit cumbersome to move the fluid from receiver to feeder bottle and operation of the fluid valve was not so comfortable. So power feeder might make the work much easier. At first I made a nozzle from 10mm brass rod. I drilled 1.6mm hole all through about 30mm. The drilling work using tail stock became much easier after tail stock adjustment. No more wobbling drill tips.


Tapering nozzle tip.


A barb was cut with parting off tool. All cutting around here was done by only on parting off tool. (I found it was dangerous to taka photo while the machine was running. I would do this never again.)


Finished nozzle.


I made a control box to control the flow of the cutting fluid.


I attached a piece of aluminium plate that worked as a heat sink.


The control circuit was very simple.


The window washer tank installed to the mill bench. I installed it in an angle to prevent heavy metal chips went to the pump. I hoped the chips went to the part with arrow.


The control box was installed.


Power supply was redundant 7.2V Nicad battery charger. I modified the control box of the mill and connected the power supply after the main switch to synchronise with main spindle operation.


I made a nozzle support using 2mm aluminium wire. It was bit week. I might remake it with thicker wire.

In full throttle the flow was too much. This type of pump did work only close to the full throttle and really the adjustment range was small.

Maybe the best thing using cutting fluid is very little sprinkle of cutting chips. The chips from the mill are quite nasty stuff when you get them in your finger.




Cutting fluid works very well with soft and sticky metals, like aluminium. When I cut a piece of aluminium by slotting saw the saw teeth were clogged by metal. However with cutting fluid it did not happen.


inserted by FC2 system