Thread: H&F coolant

I bought some coolant from H&F some years ago, when mixed it came out a sort of fluorescent green colour. Don't know if it's the same stuff, but it seemed to work OK except it stripped all the paint of my swarf tray. I use the white soluble oil now, works fine for me. My lathe can go unused for weeks at a time - I just switch on the pump to recirculate and mix it every now and then - never had a problem with smell. Every 5-6 months I let it sit awhile and drain it out through a tap on the bottom of the suds bucket, turning off the tap just before the yucky stuff floating on top drains out. I also use it on my BS-5 bandsaw, which gets used fairly frequently, again never had any problems other than filtering out the very fine swarf. I use a gravity fed system from two five litre buckets and retic taps now for the bandsaw. The coolant drains from the bandsaw to a gravity filter then down to the bottom bucket. I did use a pool pump here as well but the very fine swarf tended to gum up the pool pump magnet, necessitating pulling it apart and cleaning it every month or so - PITA. Despite being in sealed containers it seems to evaporate for some reason, never change it just top it up every once in a while.

I bought a 5L container of the H&F synthetic green stuff about two years ago (and still have about half of it left). I use it on my lathe and bandsaw and every now and then on my drill press. The synthetic is supposed to be good as it does not smell as bad - from my point of view that seems to be true and it has not removed any paintwork. However, I see that H&F no longer have the green stuff on their website, instead for the same price they have something called HOCUT 797BU for the same price.

Someone has posted that the Hocut vapour stings their eyes and skink which is a bit of a worry but the MSDS for that stuff says that this is all it really does.

I use aquarium pumps on both my lathe and bandsaw coolant systems - no trouble at all with swarf gumming the motor on the lathe pump but some problem with the pump on the bandsaw. Recently I added a second REE magnet to the front of the lube exit on the bandsaw and that seems to have fixed it.

Originally Posted by BobL

I bought a 5L container of the H&F synthetic green stuff about two years ago (and still have about half of it left). I use it on my lathe and bandsaw and every now and then on my drill press. The synthetic is supposed to be good as it does not smell as bad - from my point of view that seems to be true and it has not removed any paintwork. However, I see that H&F no longer have the green stuff on their website, instead for the same price they have something called HOCUT 797BU for the same price.

Someone has posted that the Hocut vapour stings their eyes and skink which is a bit of a worry but the MSDS for that stuff says that this is all it really does.

I use aquarium pumps on both my lathe and bandsaw coolant systems - no trouble at all with swarf gumming the motor on the lathe pump but some problem with the pump on the bandsaw. Recently I added a second REE magnet to the front of the lube exit on the bandsaw and that seems to have fixed it.

A couple of months ago I changed my bandsaw coolant reservoir from a 5L plastic container cut nearly all the way thru near the top, to a 10L plastic bucket with lid. The outlet from the saw runs into a rainwater filter fitting on the top of the bucket. The type of filter that you use on tank outlets to keep mozzies out. I tried to fit a fine SS filter but the coolant could not run thru it fast enough. I finished up sitting a magnet under the outlet pipe from the saw, on the filter. I have not had to touch anything since then. Works just great. I am using an aquarium pump. I also have magnets under the bandsaw tray to catch most of the swarf.

Dean

Originally Posted by BobL

instead for the same price they have something called HOCUT 797BU for the same price.

Someone has posted that the Hocut vapour stings their eyes and skink which is a bit of a worry but the MSDS for that stuff says that this is all it really does.

I have some of this stuff. I have not run it yet due to the warnings on the label. It reads like nasty stuff. Warnings about getting it in contact with skin etc. I might have to hunt down some less toxic stuff. The reason I got it was I was sick of breathing the WD40 vapors. Seems on paper like this stuff might well be worse! I would like to hear of others experiences using it?

Originally Posted by variant22

I have some of this stuff. I have not run it yet due to the warnings on the label. It reads like nasty stuff. Warnings about getting it in contact with skin etc. I might have to hunt down some less toxic stuff. The reason I got it was I was sick of breathing the WD40 vapors. Seems on paper like this stuff might well be worse! I would like to hear of others experiences using it?

these days the warnings on the label of almost any chemical will read the same or similar. Chemical manufacturers are just covering there arses with the paperwork because there will always be someone that will be allergic to it. The important thing to read is the MSDS sheet which will tell you straight what the toxicity of the material is and what to do about it.

I was in the big smoke today and called into H&F ...

I had spotted a lubricant outlet down the road from H&F , so on the way back I asked them if they had any machining suds .. YES .

The I got Stuff is called RAZZA DD .. brand is PEAK . Cost $33.90 for 5 litres . It says to mix 15: 1 ratio

Will see how it performs .

BTW an old machinist told me today to use coconut oil for a thread cutting lube ... he said it works a treat with a nice finish . Might be a furphy.. dont know

Mike

Originally Posted by morrisman

I was in the big smoke today and called into H&F ...

I had spotted a lubricant outlet down the road from H&F , so on the way back I asked them if they had any machining suds .. YES .

The I got Stuff is called RAZZA DD .. brand is PEAK . Cost $33.90 for 5 litres . It says to mix 15: 1 ratio

Its called RAZA (one "Z")
Some details about it here
http://www.peakoil.com.au/wp-content...AZADDpbPDS.pdf

MSDS here
http://www.peakoil.com.au/wp-content...RazaDDMSDS.pdf
It looks reasonably safe to use.

As usual they do say it should not be mixed with other oils which is impossible when "Way" and other lubes are used on machines like lathes etc. This is what usually causes the coolant to go foul.

Full range of Peak Products here
Full Product Range | PEAK OIL
- looks pretty good.

Tip: These oils can run into what are called "creaming" problems (oil comes out of suspension and forms and insoluble scum) when water alone is used to top up water lost by evaporation. The oil should always be added slowly to the water and not the other way around. When topping up, instead of use just water I use a more dilute mix e.g. 50:1 and that way it won't cream. I also run my coolant pump line as a full 20 mm recirculating loop and tap the coolant to the lathe from that loop. This maintains a well mixed oil tank.

Originally Posted by morrisman

I was in the big smoke today and called into H&F ...

I had spotted a lubricant outlet down the road from H&F , so on the way back I asked them if they had any machining suds .. YES .

The I got Stuff is called RAZZA DD .. brand is PEAK . Cost $33.90 for 5 litres . It says to mix 15: 1 ratio

Will see how it performs .

BTW an old machinist told me today to use coconut oil for a thread cutting lube ... he said it works a treat with a nice finish . Might be a furphy.. dont know

Mike

You better be careful with Coconut oil. It can be fatal. Was reading an article in the paper this week about a bloke who died after eating his wife's curry. Turns out it was the coconut oil she used in it. He was highly allergic to it! I wonder if she knew?

Dean