Here’s a short video of the coolant add on I made last month. Made all the difference in the world.
Originally shared by Tyler Harney
Short video of making of the SS keychain. (Instagram Video,@DesignConcepts1)
Awesome manufacturing bud! the whole machine looks great!
What bed material are you using?
Thanks @Brandon_Satterfield
It’s HDPE, McMaster p/n 8619K482
Now if only I could get small jobs lol
OOOps sorry bud meant the extruded Al. There used to be wide pieces at musimi and 8020 but cant seem to find them anymore.
Only water at this time. Just have to thoroughly dry off the end mills when I’m done. I have no idea what kind of coolant I need 
@brian_alley
@Tyler_Harney
you can make your own emulsified oil coolant. You can buy the mix too. There’s pink (synthetic) and white (organic). But to make your own mix some detergent and oil in water. Then you need to de-foam it. Alcohol works for that. Oil and water do mix with detergent. You still need to clean water based coolant up. But it is better than straight water. You don’t need a lot of detergent, or oil. You want something about the consistency of skim milk. Still really watery, but with color to it. Maybe about 40 to 1?
Instead of flood cooling maybe you can look into misting? It is a lot less messy.
Reading my comment again now I feel I need to add a bit of detail to it. You know you have your mix right by feel. You wet your fingers, and thumb, with it, and rub them together. You make the determination based on the slipperiness that you feel. It should feel a little slimy to you. Also, the recipe I gave is of course for making organic fluid. I don’t know what the synthetic stuff is made out of. Synthetics? Whatever they are. In the shop I worked in we used organic for saws, and synthetic for mills, and lathes. Though organic does work with the other machinery. I never did get an explanation of why we used which for what. I never asked either. That is just what we did. It might be as simple as we had both, so we used both? I kind of like the synthetic a bit better myself. It is just less nasty. So if you buy it, buy synthetic. Because you can make a passable imitation of organic anyways. I’m sure the commercial stuff has additives in it that increase performance though? Well, reasonably sure. For real the homemade stuff strikes me as the same.