Ender7 Z axis upgrade

M5X20mm screw X 3 pair nuts
M5X8mm screw X 2 , pair T nuts

mirror file Ender7 - 托盘支撑-1.STL

sorry did not specified too much details, more can be found in this post (in chinese) https://www.bilibili.com/read/cv28482346/?spm_id_from=333.999.0.0&jump_opus=1

can find me at bilibili: https://space.bilibili.com/36317034

Add more details:

1. Linear Rails Z axis
   refer here: https://www.thingiverse.com/thing:5257605

2. 2 Lead screw for a stable Z axis

   1. T8 Lead screw, length 400mm, lead 8mm * 2
   2. T8 Lead screw nut pitch 2mm * 2
   3. 2GT Synchronous wheel 20 teeth inner diameter 8mm for 6mm belt * 3
   4. T8 Lead screw lock ring * 2
   5. Z axis fixer module(plastic) *2
   6. Z axis fixer module(metial) *2
   7. 2GT-6mm circle Synchronous belt perimeter 1180mm *1
   8. 2GT idler wheel no teeth, inner diameter 5mm, for 6mm belt *3