Maybe I'm getting the wrong end of the stick here but you're planning to sharpen the roller? Good quality stainless shouldn't need a lot of maintenance when being used with willow I wouldn't have thought?
Lol
My fault for poor explanation. Of course there would be no need to sharpen the roller! I was referring to the problem of shaping the blade face profile to match that of the roller so you're not fitting a square peg into a round hole, so to speak. If, unlike me, you are lucky enough to have a profiler then you can simply machine the blade face to match the curve of the roller. Of course if you want a flat face profile, like many modern bats, profiling the face is not a problem, but I feel it's better to offer an option to any customer. For this reason I made my own concave plane so I can manually shape the face of the blade prior to pressing. Which of course means having to maintain a concave cutting edge which can be a bit of a tricky think to do.
Hope this makes sense.
The bat press has been modelled in AutoCAD Inventor so all the stress analysis is done done for you, but thanks for the offer.
The whole thing is designed around an old lathe that was originally used to clean up the inside of wooden barrels apparently and had been sat in the hedge for over 50 years according to the hedge owner. It took days to clean it up and get it moving again but is perfect for using as a slide for the press.