Prusa Mk3 Dry Spool Holder

note: I've been using this quite a while and it works great. I also found that the fan is not necessary at all, just the desiccant works perfect.  In my environment I just drain out the desiccant once a month, dry it per manufacturers recommendation, and put it back it.  Easy Peasy. 

Here is my single dry spool holder for my Prusa Mk3 or can be used as a attachment to the side of a larger container to make changing the desiccant much easier. This presentation focuses on the adding of it directly to the Prusa MK3 for one spool.

This project was a natural outcome of making the 5 gallon storage moisture sensor. I looked at a number of different methods and thought I would try something that is maybe a little more complicated but simpler to use and doesn't take up any more space.

It uses the bottom half of a $4 dollar Lowes bucket https://www.lowes.com/pd/Encore-Plastics-5-Gallon-General-Bucket/1000309157and a ring with a 1/8 or 3mm o-ring for a seal. The desiccant is held in a printed container with a viewing window with space for a 50mm fan to draw air over the desiccant.

I did a Video https://youtu.be/WZhjauw293I to describe the build process which has all the details.

The code is in a zipped file. Rui Santos gives a good introduction to the Node Red setup.https://RandomNerdTutorials.com/esp32-mqtt-publish-bme280-arduino/

The Fusion 360 file https://a360.co/3jyALCo for the ring is included with the formula to calculate diameter for different heights. Go into parameters to change the diameter.

I've included a DXF file for cutouts to the end cover. I've included to mount to the side of a bucket and a small file to mount the Moisture sensor listed almost flush to the cover. Enough room is left to allow changing the battery.

Dessicant I used https://www.amazon.com/gp/product/B01I5Y2DG6/ref=ppx_yo_dt_b_asin_title_o05_s00?ie=UTF8&psc=1

Moisture sensors https://www.amazon.com/gp/product/B07WJJ9265/ref=ppx_yo_dt_b_asin_title_o07_s00?ie=UTF8&psc=1

Sealer I used https://www.amazon.com/gp/product/B000GAUTW8/ref=ppx_yo_dt_b_asin_title_o08_s00?ie=UTF8&psc=1

4 x 2 mm filament tubing https://www.amazon.com/gp/product/B07WVYXVZK/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1

50 mm fans https://www.amazon.com/gp/product/B06XQDMMJ5/ref=ppx_yo_dt_b_asin_title_o09_s00?ie=UTF8&psc=1

213 O-ring 15/16" ID, 1-3/16" OD, 1/8" Width https://www.amazon.com/213-Buna-N-Ring-Durometer-Black/dp/B000FMUT86

Have fun making.

Cheers

Kisssys

Print Settings

Printer Brand:

MK3

Printer:

Prusa i3

Rafts:

No

Supports:

Yes

Resolution:

0.4

Infill:

25%

Filament: Prusa PETG

Orange

Category: 3D Printer Accessories