Mist Coolant Lubrication Spray System For 8mm Air Pipe CNC Lathe Milling Drill 1

Works fine, low cost and gets the job done. We are using this on a chainsaw chain sharpener with carbide teeth. The unit works well to keep the tooling and the chain cool plus helps the grinding wheel to remain open and not clog to retain effective cutting.

Works great for the price. I removed the 8 mm fitting and replaced with a standard male quick connect, same thread, and also teflon taped the ball valve at the aluminum body piece. I tapped the mounting holes to 1/4-20 (gives about a 50% thread, good enough), turned down a six inch piece of 3/8 inch steel rod to 1/4 inch for half an inch, then threaded it 1/4-20 and screwed it in. Now it works with my magnetic indicator base! As others have noted, mount your fluid reservoir about the same height as the mist unit. The flexible purple tube leaks some air, but this doesn't affect operation, and the siphon tube runs all the way to the nozzle, so no leaks there. Just used this to cut a 2 1/2 hole in 1/2 by four inch cold rolled bar. I used CRC SL2512 Soluble Oil, available on Amazon, diluted 10 to 1 with water. Set my compressor to about 30 PSI. Worked much better than squirting oil on it Also convenient for blowing chips off work so you can see layout markings.

Buy a kit with tubing, push fittings and regulator to make installing easier and less expensive. A 5/16 or 8mm fitting was not available locally. I got a regulator from Harbor Freight for $7. I wanted to use the tubing instead of a 1/4 or 3/8 air hose. The push fitting and tubing is less bulky and light weight. Tube is available but I had to use a compression fitting to connect to regulator. The reservoir should be about the same level as the valve, if higher the fluid may syphon out even with air off. I did put a brass fitting on the end of the pickup tube for weight, it wanted to curl up and not stay in the bottom of the jug. Other than that it will be fine for my needs.

I changed out the quick connect fitting to a 1/4” quick connect for pex style poly line, and used about 3’ of that to a compression adapter with a 1/4” quick connect for my compressor. I also installed a decent magnet thru one of the provided holes and spaced it out a couple of inches. I tested w/ water @ 140psi shop pressure and it does a really good job. I’m definitely happy with it. After alot of reading i found that water works just fine for the “lubricant” as apposed to actual cutting fluid. Its a lot cheaper and you can just drain the catch basin and fill the feed jug right back up.

You CANNOT go wrong with this. Mixed my mobile cut cutting fluid with water in a water bottle. Mounted the block on my splash gaurd and ran my air hose using a male quick connect. Mists great. Done with the wasteful messy squirt bottle method tripping over my machine squirting while it runs. Great value. Gonna buy more just to store cause these aren't gonna be $10 for long

*UPDATE* Since fixing the oring seat and damaged section of hose from the oring, I have managed to get this thing to work a lot better. I have found that if you put the coolant tank as high as possible it will pull enough of a vacuum and actually produce a decent mist. I was able to put my coolant tank above the nozzle head, and it has consistently been working now. However, if I put the coolant tank as far below the nozzle as the hose will allow, it will not pull a consistent vacuum, and thus the mist will be intermittent at best. I do some detail carbide and diamond drilling in glazed ceramics and glass, so I was hoping to use this to keep the drills cool, while pulling the coolant back up from the drilling catch basin. This doesn't really work. It barely pulls any vacuum to make a mist unless you cut out the damaged section from their poor o-ring setup clamping down too hard on the tube and remachine and reseat everything. Even then you have to run it at an absurd pressure, over 90PSI for me, to get it to pull anything. At 90PSI every air fitting joint leaks. I tested this with pure water, no cutting additives at all. Fortunately for me, I only wanted it for the air nozzle and not the mist feature, but someone that expects a proper vacuum mist system will be disappointed. Even only wanting it for the air nozzle, it's fairly marginal at best.

These folks are really attentive to the customers satisfaction with their products and any follow up questions or issues. This is a quality product at a great price, and is exactly what I needed.

There is no hole through the brass piece at the end. I've had this unit for right at 2 years but didn't have a chance to use it until now due to an injury that required surgery. Now that I have set it up to use the spray nozzle attached to the suction tube doesn't have a hole in it in order to pull liquid through... I have no way to fix this issue and since it's been so long I have no recourse but to leave a bad review.