Needs Pictures: 0
Picture(s) thanks: 0
Results 1 to 15 of 26
Thread: To Connect OR Not Connect
-
2nd Aug 2017, 11:47 AM #1
To Connect OR Not Connect
Some time back I made up the pipe work out of PVC to bring coolant to the business end of the lathe. As yet I haven't finished it off and use it when I am doing something on the lathe.
This is probably a question that has been dealt with before, but I was wondering whether by introducing to the lathe soluble oil would I also be introducing rust to the structure of the lathe? At times (rarely) I use a detergent bottle with soluble oil just to cool a small area that is being cut with no rust visible days after the exerciseJust do it!
Kind regards Rod
-
2nd Aug 2017, 02:29 PM #2
Hi Rod
I too, have the gear ready to fit to my lathe and have put it off for the same reason as you gave.
I don't use the lathe regularly at the moment .
Instead when I need some cutting lube it comes from a squirty bottle or I have a syringe body. I have epoxy glued a metal ink tube from a biro onto to the big bore syringe body
and can accurately place the thicker goop precisely where it is needed.
When I relocate the the lathe into my new shed I will rig up the pump and delivery head.
Grahame
-
2nd Aug 2017, 02:47 PM #3Most Valued Member
- Join Date
- Apr 2012
- Location
- Healesville
- Posts
- 2,129
G/day Chambezio, i think there are quite a few in here that wont use it, i have never had any rust caused by coolant. I use semi synthetic as I copped infections in fingers a couple of times using mineral based soluble oil, i rarely clean the lathe or mill before pulling the roller door down and have left machines like that for weeks on end at times, pretty slack eh !
Never had rust from the coolant on anything, coolant is cheaper than carbide and you often can run higher surface speeds for a better finish and reduce machining time. Lubricity is not as good as oil but i have never noticed any wear on my machines.
I have just got 10 ltrs of full synthetic soluble oil but are yet to try it, my BIL gave it to me to try, he doesn't like it because it foams up to much on his grinders.
He has never had rust either.
Cheers, shed
-
2nd Aug 2017, 06:35 PM #4Banned
- Join Date
- Feb 2015
- Location
- Oz
- Age
- 73
- Posts
- 459
Depends on the mix. I use water soluble coolant on my lathe and Bandsaw, have used it for years. If you mix too week a solution surfaces will rust. I use a slightly stronger mix and even though my lathe doesn't get a lot of use these days, I don't have a problem with rust.
-
2nd Aug 2017, 07:21 PM #5Most Valued Member
- Join Date
- Nov 2007
- Location
- melbourne australia
- Posts
- 3,228
-
5th Aug 2017, 06:23 PM #6Golden Member
- Join Date
- Apr 2008
- Location
- NSW
- Posts
- 537
Even if a coolant does not rust it can still stain the bed if left there . It's expensive and it goes off quickly and can become contaminated with bacteria . Only use it if you have to and after doing the job if not using teh lathe again for a while get it out of the lathe sump and put in a sealed container . Dry the bed well so no coolant is left sitting on the bed ways , saddle or chuck .
The volume of a pizza of thickness 'a' and radius 'z' is given by pi z z a.
-
5th Aug 2017, 07:26 PM #7
Hi Guys,
I still got a part used gallon (5 Ltr) container of cutting oil from 30 + years ago. I just checked it and apart from the container shrunk in a little, it doesn't smell bad or seem to have gone off. I've mixed a table spoon full and put it in a plastic bottle, its gone white and milky just as expected. I noticed this morning that the mix in the bottle, the water is still milky but a layer of oil has separated on top. I've left a few drops on a surface to let it dry and see if it rusts and/or stains.
I normally use WD40 and diesel as lubricants on both mill and lathe along with Trefolex and Rocol speedcut for threading and drilling.Best Regards:
Baron J.
-
6th Aug 2017, 03:02 PM #8Banned
- Join Date
- Feb 2015
- Location
- Oz
- Age
- 73
- Posts
- 459
I've been using water soluble coolant for years, I've never changed the coolant in either my bandsaw or lathe, just topped it up and never had a problem with either rust or smell. Wouldn't have a clue about bacteria, but I think there's probably more bacteria jn my dogs gob than in the coolant. The system I use on both lathe and bandsaw aren't fully sealed either as the drains on both swarf tray and bandsaw table lead to the reservoir.
-
11th Aug 2017, 05:53 PM #9Golden Member
- Join Date
- Apr 2008
- Location
- NSW
- Posts
- 537
The volume of a pizza of thickness 'a' and radius 'z' is given by pi z z a.
-
11th Aug 2017, 06:03 PM #10Golden Member
- Join Date
- Apr 2008
- Location
- NSW
- Posts
- 537
It does go off eventually and in a machine shop situation it gets much more abuse but is used more regular . However it could have bacteria build up and you don't know it when you use it you can be at risk of an infection . Old machinists have bad lungs from dirty coolants . Some shops add chlorine into it to kill any bugs but that's just as bad in my book. Leaving it sit in an unsealed sump for long periods with oil floating on top is risky . When it's used often and pumped about oxygen penetrating the liquid helps to fight bugs .
The volume of a pizza of thickness 'a' and radius 'z' is given by pi z z a.
-
11th Aug 2017, 06:14 PM #11
Thanks for all the comments. Stains on the bed is really not a problem in my case the dear old lathe is well over a hundred years old and has taken a nearly black patina on most of it. I do have some white oil mixed up in a plastic 4ltr container, that I should have a look at to see if its gone off or not. I think I might only use it occasionally when doing some heavy cuts
Just do it!
Kind regards Rod
-
11th Aug 2017, 06:33 PM #12Golden Member
- Join Date
- Apr 2008
- Location
- NSW
- Posts
- 537
That Black patina as you say is a combination of converted fine rust and coolant staining over the whole thing . If the coolant is fairly clean when it's sealed up it should be ok. I filter mine back into a drum after use and seal it up . Lasts way longer than leaving in the open sump I find.
The volume of a pizza of thickness 'a' and radius 'z' is given by pi z z a.
-
11th Aug 2017, 08:31 PM #13Wouldn't have a clue about bacteria, but I think there's probably more bacteria jn my dogs gob than in the coolant.
I never worry about bacteria. Only people who worry about bacteria get sick or infected. You soon develop imununity.
Dean
-
12th Aug 2017, 06:27 PM #14Golden Member
- Join Date
- Apr 2008
- Location
- NSW
- Posts
- 537
I know an old machinist that has a lung contamination of some kind probably from contaminated coolants but he can't prove it of course .
You don't develop any immunity to anything until you have been infected by the germs first and you have to then get better to develop an immunity , most do some don't ! Mist coolant sprays are the worst as it floats around . Some people think they are indestructible and can just ignore every safety guideline . It can't hurt to be cautious and keep your coolant healthy .
Enclosed CNC machines now are much healthier to operate as they control the coolants better . Long term effects are not well known and they don't want to know them .The volume of a pizza of thickness 'a' and radius 'z' is given by pi z z a.
-
12th Aug 2017, 07:57 PM #15
There is a big difference between long term exposure to coolant mist etc, and a bacterial infection. The infection can be cured.
Some people think they are indestructible and can just ignore every safety guideline
There are times when it is wise to be careful.
Many years ago I did a lot of centreless grinding. This produces quite a bit of mist. The coolant was changed regularly, every year on the day we knocked off for the Xmas break. For a fair portion of the year you fired up the grinder, turned on the coolant and went somewhere else for a while until the stink settled down a bit.
Dean
Similar Threads
-
Help me Rewire A Motor From Star To Delta and To Connect the VFD in Melbourne
By thumbsucker in forum ELECTRICALSReplies: 68Last Post: 22nd Jun 2015, 09:25 PM -
Which way to connect a 3 phase motor?
By Vernonv in forum METALWORK GENERALReplies: 6Last Post: 7th Sep 2014, 07:10 PM -
Changing to quick connect fittings - TIG torch
By oohsam in forum WELDINGReplies: 3Last Post: 26th Mar 2014, 09:09 PM -
Quick connect air couplings and air pipe
By Pete F in forum METALWORK GENERALReplies: 30Last Post: 31st Mar 2012, 11:38 PM