xyz printing kiss new bracket for moving the sensor to the front of the bed

thingiverse

Military personnel know this term: "KEEP IT SIMPLE STUPID". If you don't use your entire bed, you won't even notice it until parts start to overheat and stop adhering to the middle of the bed. It's not so bad with ABS, but PLA will melt small parts while trying to print. While printing my Princess Parking Sign, this takes up the whole bed, and the first layers of ABS would just bubble up off the bed from too much heat and turn into a mess. This problem with XYZ heated beds only lasting for 3-6 months before they go to wide ranges of 120C in the center to 70C around the edges has driven me crazy for years. I went through three beds, not wanting to buy another one, and went through all kinds of ideas of fixes with none making me happy. To make the mods work, I put a bed on the bench to find out what's going on, found that the bed heats normally with no extremes only when putting it into the printer does this. What I've discovered is that the place XYZ has put the sensor is the worst part of the bed that takes extreme heat to reach the sensor just by moving the sensor to a more sensitive part of the front edge solves the problem. The bed is fairly normal now, going from 120C in the center to 100C and coming down as the bed normalizes and 90C all around the edges except at the point where the old sensor was, it's about 10C colder but just at the sensor spot moving around past that spot goes back to 90C. You'll have to lengthen the pad wires to the back as they no longer reach, but if you're like me and have given up on XYZ calibration, not a big deal.