This is how I made my Kallax shelves extra strong for holding vinyl records and explains some of the decisions I made. This guy's videos are great- https://www.youtube.com/channel/UC40wiRfP8u2DrVvUm_VGcqw/featured So are this guy's- https://www.youtube.com/channel/UC2oq8RM-S7dBk_cwF-Vvv5g Thanks to both of you fellas! I learned a lot.