Sorter - three levels

[Zaratustra]

Here's a small level pack to start things up. This will be the ruler by which every other user level will be held against! Or not.

The Sorter is a sequence of three levels with almost the same objective. Play one, play all.

easy - gobudif
medium - kedodib
hard - soryxin

[flerdle]

There appears to be no F generated by the random barrel generator.

[finka]

You can always hack your way around the no-F problem, as in derubyd.

[flerdle]

Perhaps I should have put this as a support topic.

[Kevan]

It's alright, I've just been asleep. I've fixed it now, random crates and barrels can now generate Fs. Thanks.

[borogove]

(SPOILERS!)

I don't know if it's what you had in mind, but here are my solutions for your medium and hard levels:

nudolig - medium solution
cudabur - hard solution (with lots of extra decorations that aren't part of the solution, but look funky!)

Is there any way of getting two arbitrary crates to swap sides?  I just rely on few tricks repeated lots of times: replicating crates lots,  using gates+furnaces to ween out what I want, and pipes to conserve space by protecting good crates from furnaces.

[Handi]

--> More SPOILERS!

I really like your solution for the hard, borogove and it's much MUCH clearer then mine.
But for some kind of reason, I didn't think about the double filtering (ex: to get an 8, filter first all that is >8 and then all the <8 )
Instead, I tried the "funnel" trick and luckily got enough room! 

ropalys - hard solution   (I've added some decorations)

[jf]

Here is a solution that works for all three levels, by setting the typeface blocks in the "typewriter": bixuvik

[Mr K]

Here is a solution to the medium one, using only ONE sorter (gate): boditur

Edited to say:

Seeing sluutthefeared's solution to another puzzle made me realize I made boditur way more complex than necessary. Here's a  much simpler solution: sazykad

[jnz]

Here is a solution to the medium one, using only ONE sorter (gate): boditur

And here I thought I was being clever with a solution that only used 2 gates: pudifed.  It takes about 10 minutes to run.

[Hand-E-Food]

The hard level was a good challenge!  I didn't bother with the medium one after working out the hard one.

easy - gobudif - solution - nebizig
hard - soryxin - solution - reduzan