Flour Bolting Questions

I have been getting back in to grinding hard red winter wheat into flour. 

One of the most exciting techniques that I have been experimenting with is Bolting my flour using a #20 and then a #55 sieve (bought from Pleasanthill). 

The resulting flour is absolutely wonderful. 

Using the #20 sieve is really easy.

The problem is that bolting a kilo of flour through the #55 sieve is a real pain. It is time consuming and extremely messy. I'm also concerned with breathing the flour dust. 

Does anyone have any suggestions for automated flour sieve machines? I have tried the Komo sieve, and was completely unimpressed using the finer sieve. 

How about re-milling the material (chaff?) left in the sieve? 

Thanks in advance