[hornychz]

I plan to buy the Crealy Ender 3.
Some questions:
Are there any accessories that must be purchased immediately?
what type of filament do you recommend for the case?
how much filament is needed for a case?
How long does it take to print the case?
thank you in advance

Hi,

You will get the best answers from Jarek. 

But for now, at least, I have a brief reflection. If you buy it, you don't need anything but the filament.
It would be better to buy min. 1 kg of filament, Jarek recommends PLA. It is ecological (I mean from maize)
and relatively UV-resistant. I myself think that ABS is more weatherproof, but it is not UV-resistant
and harder to print. The actual amount you want the printer to tell you at the beginning of printing,
it depends a bit on the print settings. The quantity required is also reported on Thingiverse, but in this case
it is not. https://www.thingiverse.com/thing:3137127

When installing the kit, it is good (I'd like to say "important") to look at the video in advance, link from Jarek again:

And you might want to buy some extensions or improvements to the printer, there are a lot of them
on the Internet, some of them are very useful. E.g.: https://info.pcboard.ca/creality-ender-3/
Some can be printed alone, but some of them are better to buy straight, the price is low.

Good luck!