Cant change bell knive

[RockyAussie]

7 hours ago, PaulineJessica said:

Is my sharpening stone too high ? Or low quality?

In the start of your short video above the cutting edge of the bell looks like it is very rough and probably the sharpening stone is not in the correct position. It may be too far forward perhaps and making it sharpen on the very edge of the bell only. I would have to see some pictures of the machine from underneath to be more sure. From under the machine with a 12mm spanner you can loosen this bolt to allow the sharpening stone to be moved further forward or backward to change the bevel angle where the sharpening happens on the bell.

A little forward as shown in this picture would be best for heavy leather and would produce a steeper/blunter angled bevel -

For softer leathers a longer angle is better as shown in this position.Note that the shaft is further back. This adjustment also helps to maintain a wide bevel when the sharpening stone wears away and needs to be moved back to keep the wide angle.

After you have finished sharpening the blade fully you should have a bevel on the bell that measures about 4mm from the presser foot as shown in this picture below. (Note: roller presser feet require different settings to these.)

 

I have loaded up a video for now to help you see how to go about the sharpening process. I may not be a good video maker but if you would care to look at about 15minutes in on the video you will see that I can get a bell skiver to do its job a lot better than 99% of the other less experienced video makers are capable of. There are a LOT of videos out there on this subject and a lot of untrue information in them as well. Follow the steps I show in this video and you should get good results. I will make a few more on how to use these machines occasionally so subscribe (follow) me on my youtube channel if you want to see them.