Ender 7 Linear Rail Mount Blocks
thingiverse
Blocks to mount linear rails to the Z axis on the Ender 7 Using the block as a template you need to drill holes into the side brackets. I was going to add a 2nd set of rails on the back but didn't get to it. I remounted the rear wheels for added stability. These are the rails I used -MGN12 400mm Linear Rail Guide with Mini MGN12H Linear Block Carriage Miniature Linear Motion Guide Way https://www.amazon.com/gp/product/B08HVP58KL/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 Bolted directly to the 2020 channels with sliding T slot nuts. The Z axis vertical beam was actually not straight and this straightened it out. This improved my vertical stability dramatically.
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