Action Can 1483 Model CT-90 Cutting and Tapping Fluid, Poly Bottle with Spout, 500 mL

The proper stuff. Hope they never change it. Smells ungodly when smoking hot but reduces wear and tear and horsepower requirements on the lathe even in the toughest materials, also very useful for tapping and hacksawing. Keep it away from yellow metals, they don't need cutting oil anyhow, use diesel or paraffin for aluminium. Machine copper dry, by using appropriate tooling geometries, feeds and speeds. Same for cast iron, Also this gave a minor stain to some particularly strange stainless I had, but only briefly. Experiment with it.. you also don't need much to do the job which is fortunate as it would get expensive otherwise.

I've been using Action Can CT-90 cutting and tapping fluid on my manual lathe for quite some time now, and it's become my go-to for most jobs. The 500ml poly bottle with spout is a practical size - lasts a decent while without taking up too much space on the workbench, and the spout makes it easy to apply exactly where you need it without wasting product or making a mess. Much better than trying to pour from a tin. Performance-wise, it's spot on. Makes a noticeable difference when drilling, tapping, or turning - smoother cuts, better surface finish, and your tools stay sharper longer. I've used it on aluminium, brass, and steel with good results across the board. Particularly brilliant for tapping threads - you can feel the difference immediately, much less effort and cleaner threads. The fluid itself isn't too thick or too thin, applies well and stays where you put it. Doesn't smell particularly offensive either, which is a bonus when you're working in a smaller workshop space. One thing: still wear gloves. It's cutting fluid, not hand cream, and you don't want this stuff soaking into your skin day after day. For the price, it's excellent value. Does exactly what it's meant to do without any fuss. If you're doing any metalworking - threading, drilling, turning - this is well worth having on the shelf. Highly recommended for manual machining work.

Makes working metal so much easier. It stops hacksaws from jamming and reduces overheating issues with drill bits. Tools also last longer, so the lubricant saves money. You only need a drop of it, so the cost per use is negligible.

Great cutting oil, used for tapping too. Helps keep drill bits sharp. What’s not to like!

Used for cutting thread on galvanised steel conduit, did excellent job easy to apply just a couple of drops so it runs around the pipe. The bottle comes with a screw on cap and this is an excellent cutting oil.

A little goes a long way and it works well so happy

I have been using CT90 for many years, I have found it improves cutting and prolongs tool life considerably. I use it for general sawing, milling, tapping and lathe work. I would not be without it now.

Handy size, small amount used on each drill hole makes drilling in metal so easy, prolongs drill bits,