HarborFreight/HyperTough/Kobalt Mini Toolbox Cart

Here is my rendition of a cart or stand for the Harbor Freight mini toolbox. This also fits the Walmart Hyper Tough and Lowe's Kobalt mini tool boxes as well. I designed it after looking at a few different toolboxes from Harbor Freight and seeing what others have made as well. I used these casters https://www.amazon.com/dp/B0CGWTJV1L?ref=ppx_yo2ov_dt_b_fed_asin_title&th=1I designed the bottom of the cart with pockets to install 3mm heated inserts, then use 3mmx5mm screws to hold the cast