Claas 44s Netwrap blade sharpening?

[Longlowdog]

Basically how do I access the blades? If I can get to them I've all sorts of tools for sharpening but the book (or the one I've got anyway) doesn't give any indication of how to reach, remove or replace. I can see the crusty bandsaw looking blade beneath the final net roller but do I dismantle the roller and then the stainless cover panel and sit on the chamber rollers to sharpen or is there another way?
I've still not started the baler, I'm waiting on its owner to supply a power cable but I'm told blunt, rusty blades are the biggest single cause of baler misery on otherwise functional balers so that will be my next project now that I've got a few wriggly bearings and sloppy chains sorted and the decades of grime out of my workspace.
Thank you all in advance for sticking with me in this idiot noob baler servicing saga. Good job the weather is crud up here or we'd be paying a professional a small fortune if there was an urgent need for this baler.

 

[glasshouse]

Its unlikely it is blunt
If the net is tight it will cut it

 

[glasshouse]

It can be unbolted

 

[zr105]

I’m not sure if the 44 has the same set up as the 46 but on the 46 the knife is bolted with a series of 8mm bolts to the swing frame. Firstly be careful if the knife is set to trip it could easily end badly, best to open the door slightly and left off the spring ram thing(right hand side up on top as your looking back at the baler from the cab) that both tensions and also resets the knife so it is under no load. The knife is kind of serrated, when we sharpened the one on the 46 here we used a small triangular file and gave each serration a quick rub down to make sure it was sharp.
I clamped a lump of angle iron into the bench vice then held the knife onto the angle iron with a couple of vice grips so that the knife was sitting horizontal and made it nice and easy to work on