Deionized water or Distilled Water?

MR-1
1

So far Ive been using the Fusion 2240 and works fantastic with Deionized water. I mixed it at a 5% ratio.

BUT… Water does that weird evaporating thing overnight…

I am using Deionized water from Amazon but its really adding up cost wise plus its not available at your local grocery store.

I know theirs less impurities in Deionized water than Distilled Water.

So my question is… Is Deionized water “overkill”? Can I just get away with Distilled Water?

2

Yes you are. You will always have evaporation overnight leaving the Fusion residual.
At least it’s not like the maple syrup from the Langmuir supplied coolant.
Plus the fact there is now no aluminum etching.
I love the stuff.

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You are totally overkilling it.
You want a low TDI (total disovled ions) to prolong coolsnt tank clean outs and Deionized water from the store or amazon will have the lowest (back when i tested everthing I could test, deionized water was always below 1ppm if my memory serves) but your not trying to win the golf TDI tournament. As long as the TDI doesnt get too high your coolants chemistry should work correctly. Around 700-800ppm of TDI is when the coolant Im using starts to foam up and the LCPFAC start getting tangled up and preventing the coolant from doing it job of lubing up the endmill.

I use a cheap $200 RO drinking water system to feed my 3 CNC machines that each have about a 50 gallon sump. My RO water reads about 10-20ppm of TDI and I put about a 5 gallon bucket in each machine every week. It take me over 2 years before the TDI in the coolant tanks get too high and I have to change out the coolant. If I run straight tap water (i had to my first year as I was too broke for even a $200 RO system) everything works fine for about 9 months to a year and then I just have to clean out the coolant tanks and start over (mostly due to annoying foaming issues).

rant over. I only know this random stuff as I used to be a lab tech for a big chemical company that made cnc coolants. Its actually how I found out about this cool CNC world

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I never tried the maple syrup. Im glad I went with plain pancakes haha

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You opened up my eyes to a whole new world! I am by no means a chemist and probably would be the worst chemist if I tried.

Thats what I was guessing by overkilling it.

I just wanna avoid calcium deposits at all costs.

The tap water where I am at is awful and they say its super “Hard”. Even when I wash my car I can almost feel the sediment its gross.

So your saying I should be fine with Distilled or regular purified drinking water?

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Distilled water has the next lowest TDI of less than 5ppm which is still super low and It would take hundreds of gallons before you had any appreciable calcium build up in the coolant

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Distilled water it is!

Thank you for the info and taking the time :+1:

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I emailed fusion on this and they said to use distilled water. Cheap and easy to get locally.

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