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Originally Posted by raf4far
The first time i crashed a CNC was in the 6th grade. Our team was showing me how to work a CNC at basic commands. The veteran mentor was right next to me and i scrolled the z axis down to much with out switching the nob to a smaller amount. I smashed right into the part. At that time i was really really scared i couldnt believe i did that and the members of the team were going crazy trying to look for another bit. It ended up ok when they found the tool. I proudly put the part on my desk and the part is still there right now. We treat our machines better than royalty but it doesnt mean we never screw up once in a while. And when we do after we make sure everything is ok we can just joke about it.
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only time i crashed a cnc due to operator error was when i broke a 3/4 inch 60 degree helix carbide endmill (not the cheapest of tools) because i slide held the machine and turned off the spindle bnefore it entered a part and forgot to turn the spindle back on and ran the part =/
after that i only broke like two or three small endmills when i tried making our parts go faster or just the wear and tear of an engraver bit until it needed to be sharpened and ive been machining a long tiem