Ninja Flex or Fila Flex Gide for prusa I3 Hephestos and Whitbox

I had several problems to print flexible materials in my prusa and witbox from BQ, after a little research i came up with these idea and i model it. I have tested and i am very happy whit the results, i mount it and i have printed with all materials pla abs and ninjaflex and filaflex.