Powder Coated PEI Sheets  

Re: Powder Coated PEI Sheets

Obviously spring steel would be better for our use, but if they cant find a way to properly coat it, and there is already a way to properly coat aluminum, Prusa may have to make a choice to go with whats possible over whats impossible.

Nathan, it seems that you don't understand the point... let me explain again: aluminium can't be bent without damaging it! As i wrote above: when you bend it first time it will STAY BENT and ruined very first time you bend it! So, using aluminium isn't "what's possible" but it's quite useless in prusa situation, because main and only goal is to remove the bed and BEND it in order to remove part easily.
And, as teije.k said: aluminium isn't magnetic, so it's useless again for prusa situation.
IN builtak shop aluminium plate is manufactured only AT REQUEST. That tells me something: noone orders it, since it's useless...otherwise they would have some stock. Something also tells me that it's quite thick, for the very reason so it won't bend.

True, hopefully they can invent a way to powdercoat spring steel that actually works then. Seems like only option to meet marketing specifications is going to be getting the spring steel working as intended. Hopefully they are successful soon.

And yes i would imaging the aluminum sheet is thick enough to avoid bending, not sure the thickness is an issue though ive seen people clip thick glass sheets onto their printers before right ontop of stock beds and get amazing results once dialed in to compensate for extra thickness. Glass seems to be a very common upgrade to most printers printing surfaces. Glass also appears to be good for releasing your prints without the need to freeze or bend the bed. Perhaps Prusa was to ambitions with the spring steel PEI coating and should have went with a more well known and currently possible with current tech solution. Time will tell.

Re: Powder Coated PEI Sheets

Obviously spring steel would be better for our use, but if they cant find a way to properly coat it, and there is already a way to properly coat aluminum, Prusa may have to make a choice to go with whats possible over whats impossible.

ive seen people clip thick glass sheets onto their printers before right ontop of stock beds and get amazing results once dialed in to compensate for extra thickness. Glass seems to be a very common upgrade to most printers printing surfaces. Glass also appears to be good for releasing your prints without the need to freeze or bend the bed. Perhaps Prusa was to ambitions with the spring steel PEI coating and should have went with a more well known and currently possible with current tech solution. Time will tell.

i think you forget about the fact that glass wont work with the pinda probe.
i print on heated glass and it sucks most of the time. you need to keep it absolutely grease free, to the point its as sterile as surgeon tools.
you have to resort to glue stick to get at least some reliable adhesion. glass is only good for its absolutely plane surface. it kinda sucks as pure print surface, way to maintenance intensive.

Re: Powder Coated PEI Sheets

ive seen people clip thick glass sheets onto their printers before right ontop of stock beds and get amazing results once dialed in to compensate for extra thickness. Glass seems to be a very common upgrade to most printers printing surfaces. Glass also appears to be good for releasing your prints without the need to freeze or bend the bed. Perhaps Prusa was to ambitions with the spring steel PEI coating and should have went with a more well known and currently possible with current tech solution. Time will tell.

i think you forget about the fact that glass wont work with the pinda probe.
i print on heated glass and it sucks most of the time. you need to keep it absolutely grease free, to the point its as sterile as surgeon tools.
you have to resort to glue stick to get at least some reliable adhesion. glass is only good for its absolutely plane surface. it kinda sucks as pure print surface, way to maintenance intensive.

Interesting, pretty sure ive seen mk2's videos on youtube printing on glass, there must be a work around for the pinda.

Re: Powder Coated PEI Sheets

It is a workaround:first you calibrate and only after that you put glass on the bed. Printing is then done with z offset.

Re: Powder Coated PEI Sheets

My Mk1 Prusa had a Glass Printbed, I was glad to get rid of it!

no going back for me!
regards Joan