USB stick getting hot  

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HeLi
 heli
(@heli)
New Member

Yesterday I finally got my Mini - assembly was really smooth and everything works fine so far.

After my first print i pulled the USB stick (the one delivered with the printer) and it felt quiet hot. I am a little concerned, because high temperatures and electronics don't work so well together 😉

Is my USB stick the "real hotend" of the printer (is there something wrong with the stick?) or is it normal (e.g. due to exessive reading from the stick?) Did others already burn their fingers when touching the stick after a 5 hour print? 😉

Posted : 23/05/2020 8:57 pm
robee
(@robee)
Eminent Member

The first thing I replaced on my Mini was the usb stick, I found it took too long to mount on my Macbook, and was very slow. I don't remember it getting hot though, but I don't think these are good quality!

Posted : 24/05/2020 10:07 pm
3DK liked
crawlerin
(@crawlerin)
Honorable Member

USB sticks in general can get very hot - like, you can barely touch them to yank those out of USB port if you just copied something to them, especially those fast USB 3.x. It's not a big problem, flash chips don't mind heat. Actually it's the opposite, being hot prolongs their life.

Sidenote - this is the same with SSDs, if you want to keep them last longer, don't cool flash chips. Other electronic components like controllers disagree though and like to run cold. Cool those, not flash. Some manufacturers realize this and approach it in smart way with their m.2 drives, where heat from controller gets used to heat flash chips. Sticker made out of thin metal is one of the best solutions for this.

Posted : 25/05/2020 4:01 am
Matteo Cristini
(@matteo-cristini)
Reputable Member

Mine gets quite hot, too. I haven't measured but I'd say it gets to at least 50°C after a couple hours.

Posted : 25/05/2020 8:42 am
robee
(@robee)
Eminent Member
Posted by: @crawlerin

USB sticks in general can get very hot - like, you can barely touch them to yank those out of USB port if you just copied something to them, especially those fast USB 3.x. It's not a big problem, flash chips don't mind heat. Actually it's the opposite, being hot prolongs their life.

Sidenote - this is the same with SSDs, if you want to keep them last longer, don't cool flash chips. Other electronic components like controllers disagree though and like to run cold. Cool those, not flash. Some manufacturers realize this and approach it in smart way with their m.2 drives, where heat from controller gets used to heat flash chips. Sticker made out of thin metal is one of the best solutions for this.

Um, where did you read or hear this? None of this sounds like good advice at all. :/

Posted : 25/05/2020 9:57 am
bobcousins
(@bobcousins)
Estimable Member
Posted by: @crawlerin

Actually it's the opposite, being hot prolongs their life.

I've never heard that before, and that advice is opposite to established wisdom. Do you have any sources?

Possibly the confusion here is that some experimental Flash chips have internal heaters to do self-repair, but AFAIK all chips currently on the market are conventional. The m.2 "heat shield" is a gimmick, doesn't do anything practical.

Regardless, typical industrial temperature rating goes to 85°, so a USB stick could get hot to touch but still be in permissible temp range. Unfortunately, excessive temperature may also be a sign of imminent failure.

Posted : 25/05/2020 11:20 am
towlerg
(@towlerg)
Reputable Member

I think somebody is trolling (is that the correct InterWeb word). I've never had a USB thumb drive get hot or even warm. If I had a USB stick that was hot to the touch I'd copy whatever was on it quick smart, then drop it in the round filing cabinet.

Posted : 25/05/2020 1:47 pm
Matteo Cristini
(@matteo-cristini)
Reputable Member
Posted by: @towlerg

I think somebody is trolling (is that the correct InterWeb word). I've never had a USB thumb drive get hot or even warm. If I had a USB stick that was hot to the touch I'd copy whatever was on it quick smart, then drop it in the round filing cabinet.

I don't know about others here but my usb stick does get warm, no trolling. Maybe I should try with another one and see if it only happens with the included one.

Posted : 25/05/2020 2:32 pm
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