TRIM Cutting & Grinding Fluids SC520/1 General Purpose Semisynthetic Fluid Concentrate, 1 gal Jug

Works very well at a cheap price Not intended for mister system

5 star product and seller.

Havent had a lot of time working with this coolant bu so far so good. Lubricity seem good . No rust issues yet . It maybe a problem down the road with residue. Machine is sticky after use . It calls for 1.8 binx dilution. I guessed at mixing it ( 1 gallon jug) in 3 machines with 5+gallon sumps . So at 1.8 binx i have another 6 gallons mixed . 22:1 would be a good starting point

It’s probably because I don’t use my equipment regularly, and it’s not specific to this product but I’m done with water based coolants. They have all jammed my pumps with a waxy build up. It may work well if you use it every day but it’s absolute garbage if you’re a hobbiest who may let it sit for a week or two.

I have used this in Milltronics VMC for about 8 months with no bubbler and it still has the same mild scent, almost unnoticeable. Corrosion prevention appears good. It will irritate your skin wear gloves when handling for very long.

Wide range of effective concentration. Stays emulsified well with intermittent use a few weeks in between. Has almost no smell and hasn’t cause any skin issues. Protects the metal well, the mild steel filings I left on my bandsaw have little to no rust which was surprising to me.

Been using it for a while machine is not rusting

Wide range of effective concentration. Stays emulsified well with intermittent use a few weeks in between. Has almost no smell and hasn’t cause any skin issues. Protects the metal well, the mild steel filings I left on my bandsaw have little to no rust which was surprising to me.

Works well. No smell. Keeps lathe and mill clean

I read through some of the comments on the mix ratio and settled on trying 5 oz per gallon. Ran my mill in the evening and shut down. In the morning I came into shop and the mill had started to rust. I cleaned that up and increased my concentration to about 1/3 of a gallon of Trim to 4 gallons of water. That works pretty good but I still see a little bit of tendency to rust here and there. Thus I am going to use a full half gallon of Trim to 4 gallons of water. That might be a bit heavy, but rust is no fun! I spent about 20 years in the machine shop in one career. that ended in 1994. So I have seen my fair share of coolant. I would say Trim does a nice job and is pleasant to work with vs what we used back in the day. But do watch your concentration level! P