I printed mine using PLA with a .4mm nozzle at a layer height of .2mm. Also a good test of your retraction settings since the pegs essentially print like retraction towers, so make sure you have those dialed in for clean prints!

I am not sure of the etiquette around this, but I had no reason to change @jgr7's spool model so I thought it best not to reupload it here as my own creation. Please download their original spool stl here: https://www.printables.com/model/184169-shoelace-organizer

Designed using Onshape:

https://cad.onshape.com/documents/91c1fcf3f80b5e1c02dacfc7/w/3806078b8ccd3d0f617b3264/e/06f151001da2359351155242?renderMode=0&uiState=686f6e398729c32ca0bb1eb8

https://cad.onshape.com/documents/57301626786a755a6f372e3f/w/670c8f3925f990904bd5c927/e/7a5dc692833230b37d12eef0?renderMode=0&uiState=686f6e1447e792502a95f73d

https://cad.onshape.com/documents/65c75a3e906056e8ca5e0d7c/w/24b8822fec0469d488a4391b/e/066f949ddee9dd1e329132fc?renderMode=0&uiState=686f6e4e38acdb4d2a4f7bac