About this 3D model

Made these little guys up to hold dual filaments on the Rostock Max stock mount. Worked great for ages till I got a Polybox. Found other filament spool feeders/holders online but they were mostly way OTT things taking ages to print and tons of plastic. These will not! Just use a 12mm tube (carbon fiber tube pictured) between the two stock towers on the Rostock Max. I put some tape on the end to ensure the filament spools didnt slide off. You could print a 12mm tube too but best to use something slidey and premade like the carbon fiber or plumbing pipe.