What's the *best* native build plate for PETG?

Bambu Filament and Accesories
1

By “native”, I mean without the need for adhesives or release agents. Just as-is, so that ideally the PETG sticks perfectly well while printing (no lifting from warping on large prints), and releases automatically.

Any of the Bambu build plates?

Or a G10 build plate? Or Wam Bam Carbon Fiber build plate? Or Wam Bam gold PEI build plate? Or… what exactly?

Although it would be nice if it could be general purpose, I wouldn’t mind if it were special purpose and only good for PETG.

I had good luck with my Lightyear G10 build plates, but after a while they bubbled up (both the white and the black ones). They were nice because the G10 was thin enough that it remained flexible. My DIY G10 build plate continues to work, with no signs of wear, but the G10 on it, even though it’s only 2mm thick, is a bit too rigid for easy flexing.

My Wam Bam Carbon Fiber build plate seems to work well for small PETG, but maybe I need to scuff it or raise the bed temperature or build more robust mouse ears to reliably hold down large PETG prints that are warp prone. Or cave-in and add a chamber heater. I’m fairly new to this build plate, so I’m wide open to any suggestions.

2

Textured PEI plate works great for PETG.
Holographic and smooth PEI plates are a close second - but they seem to have some trouble with transparent PETG (somehow it’s more oily?).

3

Which one, exactly? The Bambulab, Wam Bam, or other?

And it works for PETG without adhesive or release agent? Just making sure.

I wasn’t aware there was all that much difference between different PEI build plates… I had assumed PEI is PEI is PEI… All the same material, so all the same result.

4

Bambu lab textured PEI (aka the default). No adhesive or release agent needed.
No, there is a large difference between flat and textured PEI. And even different textures can affect adhesion.
The only time I’ve needed glue was for TPU on the textured plate.

5

OK. I just now ordered it: