Low cost coolant piump and tank

I recently moved my Enco coolant tank with pump from my cnc milling machine
to my lathe. However I am always in need of a coolant pump on my mill. I
hate
standing by the machine squirting tap magic on the cutter every few seconds.
I also caution cnc beginners that it is essential to have a good coolant
system otherwise the cutters load up and damage the part or the cutter goes
dull prematurely. I am very wary or the mist coolant systems because of
possible health concerns so I decided to add a flood
coolant system back on my full size Enco mill.
Here is what I did.
I ordered a little giant submersible pump from Medelson Electronics
1-800-334-4465 part number 440-2609 for $24.95 which is about 1/3 the retail
price. These are new 110VAC. vertical lift 17.5 feet at 7.5PSI. It is
compatible with solvent so I ASSUME that it will work fine with most
coolants.
I placed the submersible pump into a clean 5 gallon bucket that came with
the coolant. I added a right angle 1/2 NPT " 90 fitting to the pump suction
which will keep the suction intake about 1" above the bottom of the tank and
a 1/2" NPT to 5/16" barbed hose fitting on the discharge side of the pump. I
used clear tubing with a small ball valve to control the discharge and from
there to my lockline coolant discharge tubing.
I added a 1/2 PVC coupling and 12" long nipple to the electrical outlet 1/2"
NPT fitting to seal the cable coming from the pump.
I set this assembly into the bottom of the coolant tank.
I used a 1" hole saw and drilled a hole in the top of the lid for the
tank. I placed this over the 1/2" conduit and ran the discharge tubing out
the spout. I also ran the drain back to the tank through the same spout.
I wired up a male plug to the pump motor and used a circuit with a GFI for
safety. It was now done.
I added about 2 gallons of fresh water and ran the pump for an hour. It
pumps more than enough coolant from the tank to the lockline and so I
throttle the discharge with the ball valve. I added 2 gallons of coolant and
reran the pump for another hour with the control valve throttling the
discharge. I notice the flow wasn't the same as plain water but that was to
be expected.
It looks neat. Runs neat and most importantly it was cheap.
This sure beats the $300 that Enco wanted for a pump to fit my mill base and
it beats the $100 they want for a separate coolant tank.
I Dan