Vacuum needle attachment

Before I got myself a dedicated vacuum pump, I had to improvise. I designed this. Later I figured it had more use than just that, tight corners in my PC, under the furniture and such. Attachment limits the flow though, so not really for large cleanings. 

It fits on the end of the hose, this one on diameter 38mm, but model can be scaled up to fit larger endings. Warning, scaling down can lead to clogging of inner channel as I made it as thin as possible while still sturdy enough to be useful. 

Recommended material is PETG, again due to how thin the needle is. 

Attachment can be further sealed by putting line of silicone inside. Hot glue also works, but there is risk of melting plastic.