Thank you for showing me that files do not dull faster when dragging it backwards. However, when you installed the tooth brush it ruined the test. It is the filling of filings that get pressed into the grooves on the backstroke that makes the file less effective.
Unless you are using the toothbrush every time you use a file.
Hi Jason
I watched your filing test from 3 years ago, where you filed with and without lifting the file on the backstroke. Could you run the tests again on a harder material than soft steel?
The claim from some naysayers is that your result is only because of the soft steel, and that if you file e.g. saw chains, the result will be very different. I would like to prove them wrong, as I hate to lift the file completely - it makes me loose both rhythm and angle. I also think that the “half lifting” technique is inline with my teacher’s words in “filing school” back in the seventies. (Spent 2 years working metals, the first year was mainly with hand tools)
Thanx for great videos, from uHu
Yes is on my long list of experiments that id like to further explore. Thanks for the request.