GANTRY TO CARRIAGE SHIM

thingiverse

On my Promega, I found that the gantry just wasn't long enough to reach both sides. When I tightened it down to the carriage, it pulled the carriage too hard and caused layer shifts by binding on the linear rail. To fix this issue, first check the lubrication on the rail and the carriage to ensure they move freely. Then take a look for any gap between the gantry and the carriage. Luckily, it comes with a cuttable length that can be adjusted when you place it between the gantry and the carriage. I only needed to install it on one side to fix my problems. After installing this solution, my gantry moved freely. Take a closer look and see if this is what you need too - it could make all the difference. To get the most out of these shims, be sure to print at 0.2mm or they won't be the correct height. I've included .8mm, .6mm and .4mm shims for different printers, but I personally used the .8mm ones. Once installed, simply cut off as much of the arm as you need, and you're good to go! I recommend printing the gantry cradle first, as it makes installation a breeze. Check out this great design on Thingiverse: https://www.thingiverse.com/thing:3489125