Trochoidal, trochoidal!!! Chant it with me… 
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Absolutely!! I use it for acrylic too
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How much IPA are you pumping? Is it a steady state or computer controled?
Its just an amazon mist coolant setup. I have the air at 20psi on my regulator and just barely crack open the IPA. Just enough to keep things cool but it evaporates as fast as it comes out.
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Technically it’s not mist it’s a minimum quantity lubrication (MQL) system.
well 
second time tonight the machine has been cutting along and then just taken off in a straight line. First time it did it down a clear path it had already cut. This time it was 3/4 of the way thought the FINAL cut and it took off home and broke the bit, then returned back and tried to start back where it left off. Said G?1 ******* on the screen. A few times it just hickuped in the cut. hung for a second then went back to work. No idea why its doing it and I’ve never had a cut do that before. Checked the gcode and everything seems like it should. That’s it I’m done messing around. Tomorrow morning the jackpot gets installed and we will see how it goes finishing the cut out. I have no doubts it will go well!
I had mine just deciding to go at full speed, even more than I had put in, in a straight line. I restarted the cut, happened again. Then it slowed down to a crawl. After all it was the ESP32 that hada hiccup. Restarting it completely fixed it.
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Hello @Jonathjon - would you be able to share some photos of your mist system?
In addition to the photo from above, I’m looking for some detail as to how you have mounted the valve body to your core, how you have mounted the IPA bottle to the gantry, and how you have routed the air and liquid hoses.
Also do you have any feedback/recommendations on which mister you are using? I am looking at this one, which seems somewhat similar to the one that you have .
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I am unfortunately still at work but will be home the end of this week and try to get you some more pictures.
For the mount I’m using @DougJoseph kinematic mount and he has a mount specifically for the air mister that I am using.
For the hoses I have compressed air run through pex all over my garage. Overhead where my dust collection comes off of the wall to run accross to the LR I installed a regulator and a valve. From there I run the 8mm tubing along the dust collection hose all the way to the core.
For the ipa bottle for smaller pieces I just stand it on the table, for longer stuff like struts I just sat the bottle on the back of the x beam on top of the dust collection hose. It’s rides along there just fine
This is the air mist I am using…
Mist Coolant Lubrication Spray… Amazon.com
The tubing…
Utah Pneumatic 5/16 Or 8mm Air… Amazon.com
The regulator…
PneumaticPlus SAW2000M-N02BG… Amazon.com
Hopefully all of this helps and if you have any other questions just let me know
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Fantastic! Many thanks, and thanks also to @DougJoseph (and you say that you feel that you just hack at stuff… I beg to differ!). Looks like I have a kinematic tool mount print job in my near future.
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Wood chips and plastic make for big static charges which can cause issues. Running a grounding wire will keep that from happening.
Yes all of my dust collection is grounded. I haven’t had any issues with that
Probably a dumb question, but what material is your spoilboard for aluminum? Is the IPA safe for an MDF spoilboard? I’m thinking I could put a thin layer of something else down with tape and CA glue, but I’m not sure what material would be best but inexpensive.
My spoilboard is mdf. You aren’t using much ipa. Basically just enough that you can see it hit the aluminum then it evaporates. My mdf never gets wet. Very fine mist. That’s all that is needed to keep the aluminum ice cold. I run my air regulator at about 20 psi and then just adjust the ipa valve on the mister till I barely see it on the aluminum
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I’m hoping to be cutting a few aluminum parts for the V5 either Friday or Saturday and if that works out I’ll take some video on how I set it and how the mist looks on the aluminum. Hopefully that will help take some guess work out of it
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Did you buy your sheets of aluminum locally or online? Would love to get some learning done on aluminum!
I go to a local welding shop and get drops usually. Aluminum isn’t cheap but it’s not terrible if you don’t need a bunch
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