(Un)original Prusa Drybox

The (Un)original Prusa Heated Drybox is now available!

https://www.printables.com/model/883817-unoriginal-prusa-heated-drybox 

The (Un)original Prusa Heated Drybox is a heating add-on for the (Un)original Prusa Drybox. The heating add-on gives the extra functionality of drying wet filaments and even constantly heating to reduce the relative humidity. The add-on is available for both the CLASSIC and SLIM Edition of the drybox and is a good project for anyone who wants to learn how to solder and work with electronics.
The heating system features a 200W PTC heating element in combination with two fans to blow hot air through the drybox. The heating system is located under the top panel of the drybox ensuring that the drybox still holds up to 6 spools with a diameter of 21 cm. Using the 2mm polycarbonate panels and with all 6 spools the heating system can reach temperatures of up to 45 degrees Celsius or 113 degrees Fahrenheit in 15 minutes making it perfect for drying multiple spools of PLA at the same time*. It can also reach temperatures of up to 65 degrees making it suitable for PETG**.

Update July 6, 2024

• Relabelled the top Beam A1 & A2 to Beam A3 & A4 so it is easier to understand what parts to pick for your configuration. Functionally both parts are exactly the same. 
• Added image with an overview of the location of each part in the frame to the assembly section.

Update June 28, 2024

• Added image with measurements to the gallery

Update May 24, 2024

• A full kit with printed parts for the SLIM Edition is now available through Blurolls!

Update April 21, 2024

• Published 3MF files for the SLIM Edition
• Added longer versions of beams A, F & G for the SLIM Edition that can be printed in one piece if you have a large printer.

About

The (Un)original Prusa Drybox (CLASSIC) is a drybox made out of printed parts and 2mm acrylic or pc panels. The drybox is designed to match the aesthetic of the Original Prusa Enclosure and works perfectly with it. It features an internal PTFE tube that goes through the center hole on top of the Prusa Enclosure making it not visible from the outside, the PTFE tube can be placed in six slots inside the drybox ensuring a straight path from each spool. The drybox also has two silica gel containers to keep your filament dry. An optional humidity sensor can also be used to track the humidity inside. The drybox isn't sealed but will keep most air out, and to improve its performance you can add a rubber seal. Finally, it fits most 1 kg spools by having a maximum diameter of a little over 21cm. 

There is also a new SLIM Edition of the (Un)original Prusa Drybox available. This edition can hold up to 6 spools with a diameter of 21 cm just like the CLASSIC Edition. However, unlike the CLASSIC Edition this version can be stacked upon each other, it can also be stacked on top of your CLASSIC drybox. This version does not have the internal passthrough hole to the Original Prusa Enclosure, but you can still directly print from it using the standalone parts. Finally, the filament is a little bit easier to access in the CLASSIC Edition due to the door being at an angle.

Support

If you like this or any of my other models consider buying me a coffee.
https://www.buymeacoffee.com/bramelema 

If you donate over €5 as a thank you you will be added to a list of supporters below (write the name you want to see here in the comment box). 

Supporters
#1 Mikko Laaksonen, #2 Vespercorp, #3 Anonymous, #4 Andrewlb.com, #5 Peter from Blurolls, #6 Walter Bracke, #7 Alex Krasno, #8 Sarah, #9 Greg & Maud, #10 Arcaik, #11 Joost, #12 Psych0h3ad, #13 T. J. Domsalla, #14 Photastro, #15 Anonymous, #16 Ment57, #17 Jim Callahan, #19 Werner, #20 Svaar Caldersson, #21 Bronco7794, #22 CowboyWillT, #23 Filip, #24 Kukulin, #25 mdandersen, #26 Anonymous, #27 Dennis, #28 JT, #29 Thomas Trueten, #30 Kilsgaard

Special thanks to #18 WBSP

Thank you everyone for your support!

Buy the panels

The parts for this project are available through Blurolls and can be bought here:

Classic Edition:

• The panels-only kit is unfortunately no longer available  
• Blurolls or Aliexpress(full kit except for printed parts)
• Blurolls or Aliexpress(full kit including printed parts)

Slim Edition:

• The panels-only kit is unfortunately no longer available  
• Blurolls or Aliexpress(full kit except for printed parts)
• Blurolls or Aliexpress(full kit including printed parts)

Note: I receive a small portion of each sale which helps me develop future projects like this one

Reviews

Kanrog Creations

Adventures with Dr. Joe

Gallery

Classic Edition                                                       Slim Edition

Both versions of the dry box feature two removable containers for silica gel

The Classic edition also features an internal PTFE tube connected to a PC4-M10 connector which can be used for a nice path directly to the original prusa enclosure. The Slim edition doesn't have this feature.

Print settings

I recommend printing with 3 walls and 25% infill. 
The beams, corners, and hinges have to be printed using supports, all other parts can be printed without. The parts have already been placed in their optimal orientation and are designed to be printed with little and easy-to-remove supports.

Bill of Materials

The BoM is the same for both editions of the drybox with the only difference being the amount of filament used for the printable parts.

Filament

For the Classic edition the printable parts add up to around 1300 grams of filament when using 3 walls and 25% infill. The Slim edition requires around 1250 grams of filament when using the aforementioned settings.

Since the drybox isn't exposed to heat any material can be used however I recommend printing with something a little more durable than PLA, such as PLA+, PETG, or ABS.

Panels

6 acrylic or polycarbonate (PC) panels with a thickness of 2mm or 3mm are required, I recommend PC for higher durability. 
The dxf files for the panels are in the files section.

Note: the drybox is designed for 2mm panels so 3mm panels will stick out a little bit but now the hinge will also work with the thicker panel.
Note: the side panel is needed twice.

Screws

In total 82 M3*8 screws are needed. M3*10 would also work in most places except for the hinges.

There are also 42 M3 nuts required as well as 40 M3 heat-set inserts, For the threaded inserts I accounted for the ones from Ruthex, they require a hole with a diameter of 4mm and a depth of 5.7 but other brands would also work.

Other

Two tubes are also required with a length of 49 centimeters and a diameter of 1.8 centimeters. Preferably of a low friction material as they are used to hold the spools.

Standalone

6 PC4-M10 connectors are recommended

Optional 

A PC4-M10 connector can be used in combination with a PTFE tube to ensure an “easy” path for the filament to your hotend.

Two 10*5*2 mm neodymium magnets can be used for closing the door.

A generic rectangular humidity sensor can be added.

Silica gel can also be used in printable containers to keep your filament dry.

When using the drybox with feet, 4 felt or rubber pads with a diameter of 15 mm can be added.

Printed parts

CLASSIC EDITION:

Note: Beams A, F & G also have a version that can be printed in one part instead of two (Labelled with “1+2” or "3+4").

Note: Beams A1 & A3 and A2 & A4 are the same parts but labelled differently for more clarity when picking your configuration.

SLIM EDITION

Note: Beams A, F & G also have a version that can be printed in one part instead of two (Labelled with “1+2” or "3+4").

Note: Beams A1 & A3 and A2 & A4 are the same parts but labelled differently for more clarity when picking your configuration.

ACCESSORIES (for both editions)

Assembly

The installation process is the same for both versions. The instructions below show images from the Classic edition but the parts from the slim edition are labeled the same.

1)  Heat-set inserts

Insert the threaded inserts in the correct places using a soldering iron.

Install the heat-set inserts in the following way in beams A2, A4 & G2 

Install the heat-set inserts in the following way in beam E1, E2, D, G1, A1, A3, B, C1 & C2

Note: G1_humidity has a different way of installing the heat-set inserts

Install the heat-set inserts in the following way in beams F1 & F2 

Install the heat-set inserts in the following way in beam G1_humidity & G2_humidity 

The heat-set inserts for the door-related parts can be installed like this

2) Assembling the frame

Install "Hinge_Connect" into Beam G1 and G2 as shown in the picture above and screw it in from the back. If you chose the standalone version now the PC4-M10 connectors can also be installed. After that start assembling the frame with the M3*8 screws as shown in the pictures below. When using the longer beams (number 3) this step can be skipped.

Note: In the image the top two beams are labelled as A1 & A2 whereas they are now labelled A3 & A4, these parts are the same and can be installed in the same way.

Note: When using a humidity sensor connect the parts as shown at the top of the image, otherwise use the bottom instruction.

The final result should look like the image below (CLASSIC Edition).

3) The panels

Once the frame is done it is smart to put the two tubes on which the spools will rest in place, this can also be done later but now it is the easiest to access. If you will be using the optional throughput holes in the bottom/back run a PTFE tube through the hole, under the beams, and then install it in part “PTFE_Connect” with a PC4-M10 connector.
The panels can be attached with the M3 nuts and screws, the nuts should fall into the holes inside of the frame. Repeat this step for the left, right, top, bottom, and back panels.
If you decided to use the optional feet you can install these by putting the corner screws that hold the bottom panel in place through them first.
Note: The front panel doesn't have to be assembled during this step as we will do this later.

4) Finishing touches

If you use the silica gel containers you can fill them and place them as shown in the picture above. Right now the humidity sensor and PTFE tube can also be installed.

Finally, the door can be installed, this can be done by sliding the hinges into the connectors from the side and securing them to the panel, the door handle can also be installed and the magnets can be glued into place on the handle and the bottom of the frame.

Done!

Change log

Update February 22, 2024

• A panel kit and a full kit (hardware+panels) are now available through Blurolls!

Update February 5, 2024

A new SLIM Edition of the (Un)original Prusa Drybox is now available. This edition can hold up to 6 spools with a diameter of 21 cm just like the CLASSIC Edition. However, unlike the CLASSIC Edition this version can be stacked upon each other, it can also be stacked on top of your CLASSIC drybox. This version does not have the internal passthrough hole to the Original Prusa Enclosure, but you can still print from it using the standalone parts. Finally, the filament is a little bit easier to access in the CLASSIC Edition due to the door being at an angle.

• 3MF files with supports will be added soon
• A panel kit will also be available through Blurolls soon

Update January 9, 2024

• Added an extended version of “PTFE_Connect” that puts the PC4-M10 connector closer to the spool.

Update January 8, 2024

• Added French cleat mounting option for a 19mm (¾ inch) French cleat.
• Added the ability to raise the drybox above the Prusa enclosure by making it compatible with this model. To achieve this replace beams C1&2 with the RepBox (RB) mount version.

Update December 7, 2023

• Blurolls now has a full kit including the printed parts available!

Update October 24, 2023

• A full kit with everything except for the printed parts is now available through Blurolls on Aliexpress. This kit also includes 24 bearings that can be used for spool rollers.

Update September 29, 2023

• Added optional cover for the internal passthrough to the Original Prusa Enclosure.

Update September 24, 2023

• Added “Hinge_Connect_4mm” for more clearance when using 3mm panels with weatherproofing (sealed panels).

Update September 20, 2023

• Added support for 20mm rods.

Update September 18, 2023

• An official panel kit is now available through Blurolls on Aliexpress.

Update September 17, 2023

• Added OBJ file for remixing.

Update September 11, 2023

• Added version of Beam_F3_Standalone with a closed bottom.

Update September 8, 2023

• Re-added 3mf files for beams F1&2_(Humidity).
• Added 3mf files for beams A1&2 Throughput & PC4-M10.
• Updated existing 3mf files (Changed wall count from 2 to 3 and infill to 25% as recommended).

Update September 6, 2023

• Added longer versions of the A, F & G beams for printers with a large build volume.

Update August 26, 2023

• Fixed the hole for the handle screws not being in the correct place in Beam F (all versions), it has now been lowered by 3mm.
  Note: The 3mf files for these parts have not yet been updated and therefore have currently been removed. The updated version will be added next week.
• Added optional feet.
• Added a version of “PTFE_Connect” that puts the PC4-M10 connector at a 15-degree angle to ensure a more direct filament path.

Update August 22, 2023

• Added assembled version of the model as STL file.

Update August 21, 2023

• Added blender file for remixing the model.
• Added PC4-M10 version of Beam A1 & A2

Update August 17, 2023

• Added optional throughput holes in the bottom/back of the drybox (for use with MMU or standalone).

Update August 15, 2023

• Fixed Beam E1 & E2 not laying completely flat (they have been rotated)
• Added .3mf files containing all the main parts of the frame with added supports. Note: these files have not been tested and only the beams and corners are included so you will have to print the other parts separately (other parts are all the orange parts in the renders). 

Update August 14, 2023

• Added support for 3mm panels Note: the drybox is still designed for 2mm panels so 3mm panels will stick out a little bit but now the hinge will also work with the thicker panel.
• Added the standalone feature enabling the drybox to be used without the Original Prusa Enclosure (this version still has the throughput hole to the Prusa Enclosure).