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Machine Shop and Tool Talk

Cutting fluid help


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  #1  
Old 11-26-2008, 03:43:27 PM
JoeCB JoeCB is offline
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Default Cutting fluid help

This is kind'a a strange question but the depth of knowledge on this forum never fails to amaze ... so here goes
I'm threading 1 in. dia. 4130 tubing with a custom size die, it's a shallow square thread form. I have been using this fluid called Moly-Dee (Aurther C. Withrow Co. LosAngeles 22, Calf.) the stuff works great, nice chips and smooth finish. Problem is I'm all out and everything I've tried doesen't work nearly as good (rough finish) ... even tried mixing up high sulfur thread oil with moly additive grease. ... no good! Any recommendations for a source of this magic Moly -Dee? The can I have is probably 40 years old, note the postal zone rather than zip code. Or maybe some other brand that's currently available that's given you good results. must be available in small quantities, can't use 55 gallons!
Thanks for looking
Joe B
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Old 11-26-2008, 04:34:34 PM
Pat Barrett Pat Barrett is online now
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Default Re: Cutting fluid help

Unfortunately all the good stuff that worked has been taken off the market as deemed unsafe. The main reason is that it contained 111 tri clor etheline which worked great. Other products that worked equally good were the "Original" Tap Magic, Original Mistic Metal Mover, etc. I work in an industrial supply house and the one thing we've found that is close is No 03540 CRC EV-True Tap. That part number is for a pint squeeze bottle, It's available in larger sizes. If you have a CRC Distributor close inquire about that part number. They have about 4 other tapping fluids for specific designs but this one will probably work the best for what you're doing. Try a bottle first and see how it compares.
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Old 11-26-2008, 05:32:14 PM
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Default Re: Cutting fluid help

Joe you can get Castrol Moly Dee from MSC/J&L comes in a white squeeze bottle. I do heaps of nasty alloys at work and this stuff always performs very well.
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Old 11-26-2008, 06:58:09 PM
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Default Re: Cutting fluid help

When I was a kid (very long time ago) I was a plumber's helper, meaning I got to do all the cutting and threading on pipe (manual). We had a nasty looking pot of goo with a brush that worked well with threading. When I would run out of it, I would use machine oil, which really sucked...hard work and chipped threads. The old plumber i worked with said the threading oil (the nasty stuff) was animal based lube.
Based on that, maybe lard would work. Then again, maybe thats why I never got past being a helper.
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Old 11-26-2008, 10:21:53 PM
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Default Re: Cutting fluid help

We've used Keystone #1 cutting oil which is now Valona 4984 S (formerly Keycut® 101) for.......well.......forever I guess........longer than I've been around.......so I know for over 57 years.
I imagine if it wasn't any good we'd have wised up by now.......
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Old 11-26-2008, 10:50:18 PM
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Default Re: Cutting fluid help

Does anyone no where to buy Buttercut? We use to by it at Fleet Farm it hasnt been available the last couple years. It was basically made from lard. We use to mix it with the Sulf O Cut that we use. Made a lot of differance when we were doing production tapping.

Keven
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Old 11-26-2008, 11:34:14 PM
Richard W. Richard W. is offline
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Default Re: Cutting fluid help

There was a time when lard was the only thing to use for cutting threads. They had little pots in the shop that I am told, had a candle under it to warm the lard. The old timer who told me about it said that when the lard went bad it would really smell up the shop.


Richard W. who used a mixture of white lead and cutting in the early 1970's for threading.
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Old 11-27-2008, 02:33:51 AM
wayne m. wayne m. is offline
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Default Re: Cutting fluid help

Cool Tool By Monroe Technologies works great for me also Morse Cutting oil works great. Both are resonably cheap.
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Old 11-27-2008, 07:04:26 AM
Steve NW Ohio Steve NW Ohio is offline
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Default Re: Cutting fluid help

Moly-Dee is available from Enco supply.
I have had good luck with them as a supplier for the shop.

http://www.use-enco.com/CGI/INPDFF?P...MITEM=505-2068
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Old 11-27-2008, 09:52:01 AM
bitsnpieces1 bitsnpieces1 is offline
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Default Re: Cutting fluid help

My father used to use an old time expedient thread cutting fluid made from 50% clean lard and 50% 30w motor oil. He said it worked great and was pretty cheap. Les
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Old 11-27-2008, 10:18:19 AM
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Default Re: Cutting fluid help

Thank you all for the many suggestions. I will try several of these concoctions and see which works best.

I happy and blessed Thanksgiving to all and your families

Joe B
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Old 11-29-2008, 05:58:06 AM
Samuel.G Samuel.G is offline
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Default Re: Cutting fluid help

I work in a machine shop and the stuff I use is called "Rocol". I'm not sure where it is made, or if you can get it over there. It is this brown goop that comes in an orange can, like a coffee can or paint tin. Seems to work alright for me. Good luck in achieving a good finish!
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Old 11-29-2008, 07:43:19 AM
Ray Freeman Ray Freeman is offline
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Default Re: Cutting fluid help

Rocol comes rither in a grease for hand threading or oil for machine work. Its a top quality product
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Old 12-06-2008, 03:45:33 PM
Beanscoot Beanscoot is offline
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Default Re: Cutting fluid help

I also recently ran out of the good old Rapid Tap with trichloroethane. You can improvise your own if you can find an old bottle of trichloroethane or similar and just mix it half and half with cutting oil.

You can try junk stores and swap meets for old containers of the chlorinated solvents. I have it easy, as we still have a vapour degreaser at work so have drums of the good chlorinated solvents.
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Old 12-07-2008, 11:35:47 PM
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Default Re: Cutting fluid help

Lard oil is one of the best.
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