This is a modification of several filament guides. This one need to be screwed to the front with 3mm cap screws & nuts. Run a 5mm tap through the printed thread (as 5mm thread in PLA is not well designed) …. then put a 5mm long screw down the hole and place the front frame, this will align the small hole in the hot box, then drill 3.2mm hole through…… attach the back section inside & secure with 3mm cap screws and nuts.
I think you will find this more sturdy.
The author marked this model as their own original creation.