Glass plate?  

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AnnieR
(@annier)
Eminent Member

Do they make, Prusa or anyone, a glass plate for the printer?

As in one that will give you that almost mirror finish to the bottom side of the print?

Posted : 09/01/2021 5:47 pm
Diem
 Diem
(@diem)
Reputable Member

Do you have a smooth PEI plate?  If it's not reasonably shiny (but not mirror) then you need to check your first layer setting.

You could fit a glass plate - your local glazier will be able to cut some to size but it seems rather a backward step for a Prusa...

What are you trying to do?  In which plastic?

A coat of metallic paint, polished, will get you quite  long way.

Cheerio,

 

Posted : 09/01/2021 6:18 pm
bobstro
(@bobstro)
Illustrious Member

I have not seen one. It will be a challenge to use a thick, non-metallic surface with the PINDA probe. You could try coating one side of the glass with foil, then flipping it after mesh bed leveling, but then you've defeated the purpose of mesh bed leveling. Glass is often not as flat as expected.

My notes and disclaimers on 3D printing and miscellaneous other tech projects
He is intelligent, but not experienced. His pattern indicates two dimensional thinking. -- Spock in Star Trek: The Wrath of Khan...
Posted : 09/01/2021 6:20 pm
cwbullet
(@cwbullet)
Illustrious Member

@bobstro

This is what I did.  I had terrible results.  I did get it to work, but gave up.  

--------------------
Chuck H
3D Printer Review Blog...
Posted : 09/01/2021 7:00 pm
AnnieR
(@annier)
Eminent Member

I'm trying to get a very shiny small surface for some print fabric, kinda like a plastic sequin would reflect light. 

If glass and foil won't work, can anyone think of any reason why a ferrotype plate would not work? If you don't know what this is, they were used by wet darkroom photographers, and still are sometimes, to get that glossy finish on photo prints before coated paper stock became common. 

It would probably stick just fine to the magnetic plate, the only thing is finding some way to cut one down to the right size. 

I'm assuming that the Magic Goo or whatever would help if the print does not want to stick. 

Anybody tried this?

Anybody know any reason why this would not work?

Thanks in advance. 

Posted : 16/01/2021 5:49 pm
AnnieR
(@annier)
Eminent Member

For anyone who is interested, I borrowed a ferrotype plate from another member of my photo club and tried it. 

It sticks right to the magnetic base just fine. You need to set the live Z down about 200 points or so. It needs some stick-um to hold on the plate and both the stick glue and hairspray work just fine. 

Leaves a nice totally shiny mirror finish to the bottom of the print. 

Posted : 20/02/2021 5:19 pm
bobstro liked
cwbullet
(@cwbullet)
Illustrious Member

@annier

Thanks,  Can you post a picture? 

--------------------
Chuck H
3D Printer Review Blog...
Posted : 20/02/2021 5:25 pm
Xanthe
(@xanthe)
Active Member

For anyone attempting to use a glass bed, please remember to use borosilicate glass, 'normal' (i.e. float, plate, window or mirror) glass can shatter if subjected to thermal shock.

Posted : 21/02/2021 7:09 pm
Diem
 Diem
(@diem)
Reputable Member

@annier

Look up 'liquid mirror paint'  - remarkable stuff.

Cheerio,

Posted : 22/02/2021 2:23 am
AnnieR
(@annier)
Eminent Member
Posted by: @cwbullet

@annier

Thanks,  Can you post a picture? 

Uh, sorry if I appear to be ignoring you but I'm not. This is just not one of the boards I check daily so I missed ya.

Yes, when I get home tonight I'll post some pictures, if I can figure out how to post them, of course. I think I've done it before here so if I did it before I can do it again. 

Posted : 27/02/2021 5:27 pm
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