AMS three-layer stack

Personally, my first-layer AMS has space to be pulled out, so only the second layer has sliding rails. The second layer uses 35cm rails (a personal mistake, I initially didn't notice that 30cm rails don't extend 30cm, so it wasn't set up properly when fixing the angle steel). The third layer is fixed, and I later thought I should have fixed two more 30cm angle steels, which would allow printing four small plates directly to hold the AMS, making it sturdier. The released model is an incomplete version; the pegboards on both sides do not yet have alignment holes for fixation. If the first-layer AMS also needs to be pulled out, replace the 650mm angle steels with 700mm or longer ones, and just add two 300mm ones to the existing angle steels mentioned above. Angle steel dimensions and quantities: 475mmX4 + 300mmX8 + 650mmX4. Recommended quantities: 475mmX4 + 300mmX10 + 650mmX4 (the two extra ones are used on the top layer) + 650mmX4. Angle steel quantities for the version where both the first and second layers can be pulled out: 475mmX4 + 300mmX10 (or 12) + 700mmX4. Angle steels bought with stacked coupons can be obtained for free, so I won't write down the prices.