Spool Wheels for IKEA LACK Enclosure

I really liked the idea of the wheels for the filament spools on the IKEA LACK enclosure. However, I had three issues with the design. I found that narrow spools didn't fit, the wheels didn't roll very smoothly, and the wheels fell off whenever I lifted the lid off.

I used two 14 inch long pieces of 1/2 inch CPCV thin-wall pipe (5/8 inch OD) for axles and some custom supports.

Now the wheels roll smoothly, can fit three very narrow or very wide spools, and the axles and wheels don't fall o