AM8 - Z 12mm upgrade

thingiverse

Note: This is only a tiny part of my AM8 upgrades. You can find the links to the other parts at the bottom of this description. About ===== This Z rework aims to reduce ringing and wobble on tall parts. It's designed as a drop-in replacement, fully compatible with the original AM8 X arrangement. This upgrade is meant to be a cheaper alternative to the MGN upgrade while still providing rigidity. To maintain compatibility, two options are available: a) 12mm linear rod upgrade with sinter or igus bushings This option keeps the outer bearing diameter of LM8UU/LM8LUU while using 12mm rods, allowing for a plug'n'play upgrade that maintains compatibility with the A8 and AM8 X axis. b) 8mm linear rod upgrade with reinforced printed parts This option benefits from the reinforced printed parts but retains the weak points of the 8mm rods. I recommend this option only when high-quality Z rods have already been purchased. The leadscrew and linear rods are 22.2mm apart, just like on the standard AM8 and A8 to maintain compatibility. BOM ==== 24x slot nut 24x screw for slot nut (for example M5x10) 8x M3x16 ISO 4762 2x M3x20 ISO 4762 8x M3 DIN 125 washer 2x M3 DIN 934 nut If you choose the 12mm rod option, you will need IGUS or sinter bearings: 4x bushing 12mm ID, 15mm OD, length 10mm (length isn't crucial and can be longer) If you choose to mount the top brackets with M6x60 screws, you'll also need: 4x M6x60 ISO 4762 screws (M6x55 will also do) Remix & Sources ============== There are STEP sources available in the files section. I'm happy to see improvements and remixes of this Z upgrade. Assembly Instructions ================== **Instructions are available as PDF in the files section** You might also want to check out my Y rework with horizontal belt: https://www.thingiverse.com/thing:2970681 Version History ============ -none yet- ------