Schaafmes Slijphouder

This equipment is safety category 6: Other equipment with no limits.

This equipment is Noise Category 3: Can be used at all hours. No limits.

Speciale houder om messen te slijpen op de Vlakslijpmachine / Surface Grinder.

Met dank aan HansD. Vraag demo bij HansD of Dirk-Willem. Het is absoluut niet moeilijk.

Movie: https://vimeo.com/manage/videos/663078557 or https://vimeo.com/manage/videos/663078557

Instructions / use

1. You typically will have to remove the magnetchuck. You need Spanner #22 for this. Note that you do not have to unplug the magnetchuck - if no one is using the Abene Metal Mill / Freesbank - them placing it on that table is convenient. Make sure the cable does not snag.
2. Check that the surfaces are clean - so that the jig is mounted parallel to the table. Remove any cruft.
3. Mount jig on the Surface Grinder; It will be diagonal. This is intentional. # Ensure the jig is clean (so the knifes will seat well/flush)
4. Ensure the knifes are clean (so the knifes will be tightly packet)
5. Put the knifes in the jigs; hand tighten and then tighten the bolds gradually; in several stap. To avoid asymmetry/building up needless stress.
6. Puth the endstoppers as far left/right as you can; but where they still easily 'lock' in place.
7. Lower the wheel over the knifes until you can just about no longer have a piece of (thin) paper in between. Err on the side of 'too high'.
8. Gently check that it also does not touch (at all) at the far left/right
9. Start the wheel. Move table forward so that the wheel is just 'before' the knifes.
10. Start motion & coolant.
11. Now gently lower the wheel in small steps until it just touches (usually at the far left or right side; the middle is often a bit lower.
12. Make a full pass; then go down in steps of 5 to 10 until all nicks and scratches are gone. It pays trying to be economical; the less you take off - the longer we can postpone buying new knifes again (they have to come from Germany; a new set is a bit over a 100 euro's including shipping).
13. Best to use fairly small steps in the Y direction; and towards the high end for the X travel. You will see blueing/discoloration or pretty patterns if you dwell too much or try to take too much off. Usually this starts on the far left/right first. In that case; increase the X travel speed; and decrease the steps down you are taking. And check that the coolant hits the work (and _not_ the stone).
14. Step down (just) 2; and do a 2 final passes (or 3 if it it still touches somewhere) - i.e. letting it spark out. It may take a bit - as something seems quite heat/expansion sensitive.
15. Remove knifes & use the wetsteen(speksteen) to remove the burs on the back.
16. Check that the surface is clean and that there is no crust/cruft on the magnetchuck before putting it back. Light oiling recommended.