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Prusa USS Drybox  

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SamuelJesus
(@samueljesus)
Member
Prusa USS Drybox

Hello everyone,

Just wondering if there are any news about the DryBox.
To be honest, I never saw it available on the website, and I cound't find any videos on youtube about it. Even on the Prusa Blogs, its not shown a lot of information about it.

Was it actually ever available and just sold out really fast ? or are we still waiting on it being released? 

Prusa, can we have more info about it ? 

 

Thanks 😉 

Samuel Jesus

Posted : 27/02/2026 9:26 pm
1 people liked
James Kirk
(@james-kirk)
Trusted Member
RE: Prusa USS Drybox

That’s a good question. 
I signed in to get a notification when available. But until now, I did not get anything. 

Imho it’s also a little bit expensive compared to the polydryer box. 

Posted : 27/02/2026 10:25 pm
cwbullet
(@cwbullet)
Member
RE: Prusa USS Drybox

 

Posted by: @james-kirk
Imho it’s also a little bit expensive compared to the polydryer box. 

Probably true.  

 

--------------------
Chuck H
3D Printer Review Blog

Posted : 27/02/2026 11:03 pm
Jürgen
(@jurgen-7)
Famed Member
RE: Prusa USS Drybox

Tommy from Prusa mentioned on Reddit that they had to do several revisions of the injection mold to get a well-sealed box, and that these respins are pretty time-consuming. So the USS boxes have not been available yet.  

Posted : 28/02/2026 7:20 am
3 people liked
Malvineous
(@malvineous)
Eminent Member
RE: Prusa USS Drybox

I'm keen on getting this too, and I just noticed that they've added some more details and photos to the page on their shop: https://www.prusa3d.com/product/prusa-uss-drybox/

Hopefully that means it's not too long now until they are available!

With the current offer for free shipping over US$200 until April 21, I hope the dryboxes become available for purchase before the free shipping offer ends.

Posted : 31/03/2026 7:39 am
Malvineous
(@malvineous)
Eminent Member
RE: Prusa USS Drybox

Looks like they are now available for preorder!  They started off yesterday saying a lead time of 3-4 weeks, but unfortunately they weren't eligible for the current free shipping offer as expected since they are not currently in stock.  I planned to wait to see if they became available before the free shipping offer expired, but now the page says they're in high demand so the lead time is 5-6 weeks, which will be after the free shipping offer expires unfortunately!

Bit of a shame, since shipping to Australia is the same cost as 2-3 dryboxes alone.

Posted : 02/04/2026 8:55 pm
hyiger
(@hyiger)
Famed Member
RE: Prusa USS Drybox

Frankly, I don't think they are worth the cost. I'm able to buy 2 Polydryer boxes for the price of one USS box (plus shipping). Sure, I can't mount them directly on the C1 but I really don't care about that. 

Posted : 02/04/2026 9:38 pm
1 people liked
cwbullet
(@cwbullet)
Member
RE: Prusa USS Drybox

It will depend on the quality and needs of the individual.  

Posted by: @hyiger

Frankly, I don't think they are worth the cost. I'm able to buy 2 Polydryer boxes for the price of one USS box (plus shipping). Sure, I can't mount them directly on the C1 but I really don't care about that. 

 

--------------------
Chuck H
3D Printer Review Blog

Posted : 02/04/2026 9:58 pm
1 people liked
Jürgen
(@jurgen-7)
Famed Member
RE: Prusa USS Drybox
Posted by: @cwbullet

It will depend on the quality and needs of the individual.  

Posted by: @hyiger

 [...]

I think the quality of the individual is alright in @hyiger's case. 😎 

Posted : 02/04/2026 10:00 pm
hyiger
(@hyiger)
Famed Member
RE: Prusa USS Drybox

 

Posted by: @cwbullet

It will depend on the quality and needs of the individual.  

yep

Posted : 02/04/2026 10:06 pm
Mike Daneman
(@mike-daneman)
Estimable Member
RE: Prusa USS Drybox

It seems to be in-stock now, but doesn't support free shipping.

Posted : 02/04/2026 10:11 pm
hyiger
(@hyiger)
Famed Member
RE:

This is what I'm seeing... ~$50 for a Tupperware container

Posted : 02/04/2026 10:13 pm
1 people liked
Malvineous
(@malvineous)
Eminent Member
RE: Prusa USS Drybox
Posted by: @mike-daneman

It seems to be in-stock now, but doesn't support free shipping.

Still showing as 5-6 week lead time for me.

Posted : 02/04/2026 10:14 pm
Mike Daneman
(@mike-daneman)
Estimable Member
RE: Prusa USS Drybox

 

Posted by: @hyiger

This is what I'm seeing... ~$50 for a Tupperware container

For a NICE Tupperware container. 🙂

Posted : 02/04/2026 10:21 pm
Eds_3D_Odyssey
(@eds_3d_odyssey)
Estimable Member
RE: Prusa USS Drybox

Did Prusa just give us a sneak peek of a new product hidden in a joke video?? I want more info about this Prusa Pro ACU!!!

 

https://www.printables.com/@Eds3dOdyssey
Posted : 03/04/2026 11:22 am
Malvineous
(@malvineous)
Eminent Member
RE:

I was wondering that too - it seems a bit too well designed for a one-off.  I suspect if it was only done as a joke there might be enough demand to turn it into a real product!

They have already put the files online so you can print your own copy.  It seems like a particularly detailed model for just a joke.

EDIT: Link https://www.printables.com/model/1657964-prusa-pro-acu-design-files

Posted : 03/04/2026 1:34 pm
1 people liked
hyiger
(@hyiger)
Famed Member
RE:

 

Posted by: @eds_3d_odyssey

Did Prusa just give us a sneak peek of a new product hidden in a joke video?? I want more info about this Prusa Pro ACU!!!

I wondered about that as well. That it's really a filament dryer. That would be kind of nice. Knowing Prusa, it'll probably be stupidly expensive and underpowered. 

Posted : 03/04/2026 2:20 pm
cwbullet
(@cwbullet)
Member
RE: Prusa USS Drybox

I hope and suspect that it will not be under powered.  Prusa has been moving more and more into higher temp filaments.  They are producing a nextruders nozzle that can take 400 C.  I pray I am not wrong, but anything less than 90 C would be a disservice.  

Posted by: @hyiger

 

Posted by: @eds_3d_odyssey

Did Prusa just give us a sneak peek of a new product hidden in a joke video?? I want more info about this Prusa Pro ACU!!!

I wondered about that as well. That it's really a filament dryer. That would be kind of nice. Knowing Prusa, it'll probably be stupidly expensive and underpowered. 

 

--------------------
Chuck H
3D Printer Review Blog

Posted : 03/04/2026 2:27 pm
hyiger
(@hyiger)
Famed Member
RE: Prusa USS Drybox

 

Posted by: @cwbullet

I hope and suspect that it will not be under powered.  Prusa has been moving more and more into higher temp filaments.  They are producing a nextruders nozzle that can take 400 C.  I pray I am not wrong, but anything less than 90 C would be a disservice.   

Would really depend on what kind of plastic the dry box is made from. By the looks of it and the fact that the material itself would need to be hydrophobic I would say confidently that it's polypropylene. If that's the case, depending on the grade and formulation it can start to soften and warp at 80-90°. If I were to take a wild guess I would say the dryer will probably max out at 70°. 

Posted : 03/04/2026 2:36 pm
cwbullet
(@cwbullet)
Member
RE: Prusa USS Drybox

 

Posted by: @hyiger

 

Posted by: @cwbullet

I hope and suspect that it will not be under powered.  Prusa has been moving more and more into higher temp filaments.  They are producing a nextruders nozzle that can take 400 C.  I pray I am not wrong, but anything less than 90 C would be a disservice.   

Would really depend on what kind of plastic the dry box is made from. By the looks of it and the fact that the material itself would need to be hydrophobic I would say confidently that it's polypropylene. If that's the case, depending on the grade and formulation it can start to soften and warp at 80-90°. If I were to take a wild guess I would say the dryer will probably max out at 70°. 

I hope that is incorrect.  

--------------------
Chuck H
3D Printer Review Blog

Posted : 03/04/2026 3:31 pm
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