Rinnai Hot Water Heater Cleaning Vacuum Attachment

Our hot water stopped working one day and I discovered the burn buried in carbon dust. Not wanting to remove the whole burner, I created this narrow, curved vacuum attachment to suck up as much dust as I could and blow the rest out with my shop vac.

Printed in PLA at 0.3mm layer height, build plate supports for the curve. I would recommend gluing the coupler. I have included a file with it as one single piece if you'd like to try printing it like that. I broke it apart to reduce support material needed. If I reprinted I would probably do it in PETG