Summary This is a peg board bracket for my filament storage system. The bracket uses 1 1/2 inch diameter PVC pipe for the axle that the filament spools ride on. The lengths for the PVC pipe are as follows: 1 filament spool - 5 inch length of pipe 2 filament spools - 8 inch length of pipe 3 filament spools - 10 inch length of pipe 4 filament spools - 13 inch length of pipe. I tried a six spool storage section and had catastrophic failure of the bracket so I do not recommend storage racks of greater than 4 spools. These brackets were printed in PLA with support for the end pegs. Print Settings Printer Brand: RepRap Printer: Prusa i3 Rafts: Doesn't Matter Supports: Yes Resolution: .35 mm using custom .68 mm dia nozzle