Stackable Shoe Rack with Riser

I like both 3DDIY's "Stackable Shoe Rack" (https://www.thingiverse.com/thing:4676909) and JIMBO_SL1CE's "Shoe Rack v2 (3x beams)" (https://www.thingiverse.com/thing:5170316). So I merged ideas from both and created this one. It has the open honeycomb lattice and the 3-beam design. Like 3DDIY, I printed mine with no top or bottom layers so that you can see the 5% honeycomb infill. I used a 0.8 mm nozzle, and 4 perimeters worked great. Like JIMBO_SL1CE, this uses common 1x2 inch boards (0.75" x 1.5" actual dimensions). Bonus -- I also created a stackable riser. My wife wanted one more row that could hold taller shoes. Two risers can be printed at once. You'll need about 220 x 210 mm space on your build plate. Heads up -- I had serious warping/curling issues at the corners of this big print. I tried a lot of ideas, but the one that worked was using 3DLAC spray adhesive.