Bump flaking

[Braeden P]

Started flaking a lathe bed that I got planed it will become bench centers soon! It is 48”by 5” excluding the slot in the center.

 

[Richard King 2]

You should swing the hammer a bit more parallel to the surface . Your hitting down to much. I tell folks to aim at your belly button. It looks good, but it could look better.

 

[Braeden P]

That really helped! I will need more practice this way but one side is done!

 

[Braeden P]

Got it done! On the final one the scraper went off of the bed and the handle hit me in the chin! That hurt!

 

[Richard King 2]

So I learned how to bump flake yesterday and I want to know what rake angle I should use. Currently it is a 120mm radius as recommended and a 5 deg negative rake on an Anderson scraper since is too stiff to be a scraper

One of last weeks class students brought a tube type Anderson scraper with a carbide blade we ground and lapped to a 60 deg. radius and he did a good job flaking with it. He didn't like it as a hand scraper and preferred the German style I recommend.

 

[Braeden P]

If a sandvik blade is strong enough I will use it but I don’t want it to break since it’s the one Paolo gave me.