So, because I’m a lazy fuck with an extra print sheet, I decided to go against the advice on the internet, and test how my print sheet would handle my dishwasher.
It endured the “extra power” programme just fine, as I had some pots and pans that needed a thorough clean. I threw in a tablet of a reasonably OK brand of dish washer soap.
I figured the print sheet was built to handle temperatures hotter than what my dish washer would cause, so that wasn’t really much of a concern.
The water where I live is extremely soft, so I didn’t have to worry about any calcium or the like.
I’m thinking that the dish washer soap is the main concern, as I’m sure some might leave a small residue to ensure nice clean-looking glassware, but I have not found this to be an issue in my case.
Prints work as well as they did after handwashing the print sheets, so all in all, I’d say it was a success in my case. I will continue to clean this one particular print sheet in the dishwasher and see if a difference becomes apparent over time.
Note: I learned recently, thanks to Technology Connections, that american dish washers are supposed to be connected to hot water. This is not the case here, and I suspect the ability to also rinse with cold water help the print sheet clean up nicely.
EDIT: Textured print sheet from Prusa, by the way.
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Man I don’t judge, but it takes me a minute to clean a sheet I’ve covered in glue
Then again, I dont have a dishwasher, maybe I need to get one and be lazierI’d be more concerned about the abrasive factor of dishwasher soap over time, rather than temperature issues. Dishwasher soap is very gritty since it needs to use that as an abrasive to get food off, rather than someone wiping with a scrub.
Really gonna depend on what type of print sheet as well. If you have a coated sheet, that coating is probably going to get worn off.
Depends on the soap probably, but I don’t think most soaps are like that, they dissolve into the water and the pressure of the jets is the main physical action.
Not sure if it’s really gritty. Seems it is to a degree. But more like table salt. I stirred it for a bit and it was pretty scratchy for a while but then dissolved entirely after about 2min. I think it’s more water pressure and chemicals doing that job. It sure seems abrasive to coated surfaces, though. I used to put my non-stick pan into the dishwasher. And it wrecked the surface over the course of several months or a year or so. Now I’m not doing that any more and the pan after that lasted me longer. Just my anecdotal evidence, not science… But I’m positive that’s why we’re not supposed to put these things in there. I guess putting a non-stick pan in 5 or 10 times wouldn’t make a noticeable difference, though. But there are other materials, where once does damage. I once (acidentally) put some kind of scoop in, I believe made of aluminum, and that had wrecked it immediately. Had disgusting colors after that.
Occasional cleaning in the dishwasher is probably fine, as long as it’s occasional. Dishwasher detergent contains enzymes that eat away at the food on your dishes. Just be sure and do it with a full load of dirty dishes, otherwise those enzymes will start eating away at whatever else is in the dishwasher. 
It’s why if you read the manual of your dishwasher, it will usually tell you to not rinse your dishes before putting them inside. Those enzymes need something to work on, and if there is no food for them to munch on, they will start munching on your glasses and dishes, dulling their finish. 
Enzymes are specific to a particular molecule, or class of molecules with a particular pattern. A PEI buildplate is not getting eaten by the proteases in a dishwasher tablet. The reasons you’re not supposed to rinse things before putting them in the dishwasher are:
- most dishwashers have sensors to detect how much material is ending up in the water, and if things have been rinsed, it can mislead them into thinking the load is lighter than it really is.
- dishwashers replace some of the dirty water part way through the load, and the enzymes are more soluble than the dirt, so if there’s not much food residue for them to stick to, they can end up getting rinsed away part way through the cycle.
- it uses water and your time to rinse the dishes first, which is a waste if it doesn’t make them end up any cleaner.
I’ll have to take your word for it. I’m just parroting what the dishwasher repair guy told me.
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What plastic are you referencing on the print sheet? Some delamination of a layer from the metal sheet?
