CPAP Machine Hose & Mask Dryer

prusaprinters

Post your prints. This seems like a solid replacement for much more expensive off the shelf hose dryers. Only supports needed are build plate to accommodate the two notches in the part that fits into the fan exhaust. CPAP machines need to have the hose and mask regularly cleaned with warm soapy water, then it takes a lot time to dry out. This printable dryer pushes air through the hose to create a convective evaporation environment to dry the hose quickly. Super easy to print and use.This prints in 3 parts and can be mounted to a wall or shelf if desired. It can also be freestanding. You'll need 1 basic surgical mask (everyone has these nowadays) to act as a filter so you're not pushing dust into the hose.This design is for a specific radial fan you can find on Amazon which can be found at the link below for a reasonable price <$20 ($16.99 as of July '22), plugs in to standard USB, and includes a switch for operation. The three printed pieces, fan, and surgical mask assemble with M3 bolts. https://www.amazon.com/gp/product/B012CL2V3I/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1Assembly:1: The top piece simply snaps into the fan housing. It may take some minimal filing depending on the size of the "elephants foot" from the bed adhesion.2: Mount the bottom piece to the fan with four M3 bolts.3: Using a new surgical mask, streatch it over the bottom piece and carefully place the "clamp" in position, then screw your M3 bolts in such that they push through the mask material, clamping it in place.4: Cut away the excess surgical mask on the perimeter with your favorite cutting device.5: Mount to a wall or desk if you'd like. You can also just have it freestanding in various orientations.6: Pat yourself on the back for saving a lot of money and having a handy dryer tool so you have a clean hose and mask before bedtime.Note: This is the 5th iteration of the design and I've been using it for over a year without issue. It works great, is easy to mount if you desire, and even has an addition USB plug so you get the port you're using back for another device. Comparable off the shelf commercial devices cost far more (5x) than this build does. I showed some pictures of the first designs that attempted to use a 140mm axial computer fan, however the flow was just too low. The radial fan linked in this description massively increased airflow through the hose and was what I finally ended up calling a viable product. Enjoy!Happy Printing!