Step 1: Use something else to space the 2 layers of acrylic instead of the typical spring system. I used these nice little scavenged ceramic parts from work. There is just enough clearance for the belt clips.
Step 2: Use 2 strips of 3/8" x 1.5" wood and drill holes for this style "nut" to secure in.
Step 3: After all 4 are in place, use a bolt to compress the spring and spring load the wood the platform
Step 3 alternate view: With a careful eye you should be able to see the warpage on both sides showing. It's really bad in the middle.
Step 4: Put the larger acrylic over the smaller as before, but now the springs are on top supporting the wood, not under it separating the two acrylics. Using the heated bed spacers, suspend the headed bed above the wood. And if you have a precision ground high grade ceramic plate like I do, put on top of that.
Whoa Whoa WHOA!!! Look at how tall that is and all the wasted space! Design change time :) It will be in the next post. More details on why I want to level the bed like this in that post. Remember, this is not the option I choose! See the next post.