This unit has a 3 wire plug White and Black neutral and line (120v) and a Red wire. This unit is powered with 120v AC and has 9v DC Battery backup. The wife did not what me to wait, so she went to Wally-land and got me a "Kidde FireX Smoke Alarm" for a whopping $11.59 USD +tax. So any little protection is a great investment. I don't know about anybody else's machine, but my CNC mill is dumb as a rock and has no concept of right and wrong. It only takes a few seconds for something to go south. sometimes you have to go get something to eat or go wash your hands. I agree with everyone, it's always best to keep your eyes on the machine and generally I always do. Wow, really great discussion and I really like all the feedback and suggestions. If I burned that down the next thing I would really need to build is a small storage shed to live in for the foreseeable future.īut yea, I am going to look at your stuff because it would be handy if I were doing something and did not see it start to burn. When it comes to wives? Her shop is in the other half of the building, all her glass stuff, kiln, wheel, pottery molds, etc. Insurance be damned, I have spent years making tools, jigs, etc that I use.įrankly, I cannot see any justifiable reason to leave a cnc router running because something is more important than the shop burning to ground. So what if I lose maybe 5 or 10 minutes cutting time? I have way too much time and money invested in my shop to start all over if it burns down. That said, I do not leave it running unattended for more than maybe a bathroom break, and even then I feel stupid for doing it so that will probably change. My shop is quite a distance from our home, so if I do get a fire the whole house will not burn down. They do not have a flammable spoil board. They are made out of steel/aluminum/cast iron. Our machines are very different from cnc machines that run 24/7 in an industrial environment "lights out". Turning off the power may or may not stop the fire. The dust collector is running, lots of oxygen and embers, dust in the hose and the DC.
(not trying to be negative here, just some food for thought)īy the time the smoke detector does it's job may be too late. The way I see it, it's a pretty cheap insurance policy. Let me know if you're interested in the parts list and the design drawing to build your own. I should have a working prototype in about a week or two. As of now, I'm using off-the-shelf parts from Amazon at a cost $36 USD. This solution would drop the power to my complete system (controller, spindle, and PC) in the event of smoke being detected. This morning I've designed and ordered the parts to assemble a 240v - 60Amp CNC master power shut off if smoke is detected. I do have to walk away from my machine and leave it unattended, but I'm definitely not interested in installing a camera system for remote monitoring. Well, after watching the video multiple times, I responded with, yes dear, but we can put some protection in the shop to prevent this type of (CNC Mill, 3D printer) runaway. The other day, my wife showed me a video of a unattended CNC mill that was malfunctioning and basically caught fire (link below) and she asked me Could this happen to us?.
The workpiece needs to be flat, smooth and without warps or significant thickness change.