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Search results

  1. P

    Tool Vevor Drill Bit Sharpener Improved

    Good find. I wonder if the order would make a difference?
  2. P

    Tool Vevor Drill Bit Sharpener Improved

    I still have not found the original info I was looking for but I did find this. From https://modelenginenews.org/meng/quorn/drilljig.html First, we probably should define just what "4 facet" sharpening is, and how it differs from conventional "conical back-off" sharpening. In order to cut, a...
  3. P

    Tool Vevor Drill Bit Sharpener Improved

    I'm not disagreeing with you. This machine allows grinding great sharp drills. I still have some drills I ground with a similar machine that I am very happy with. I have looked at a completed drill bit that has gone thru all stages of the unit. Sharpen, relief, and point split. It is the...
  4. P

    Tool Vevor Drill Bit Sharpener Improved

    Just on a side note here...... the sheet metal guys where I worked had one of these drill sharpeners in their shop. It was very similar to the Vevor/Motom. I used it a number of times on bits I brought in from home. I was in love with it. I do not remember the name of it, but I'm sure it...
  5. P

    Tool Vevor Drill Bit Sharpener Improved

    PeterT is on the right path above. The second photo is from Susquatch above. It is before the relief has been added to the bit. This is a conical grind. Peter's photo shows a 4 facet grind. All the facet lines come together to form more of a point then you see on a conical grind (at the...
  6. P

    Tool Vevor Drill Bit Sharpener Improved

    On both the Vevor models, the first step of sharpening the drill is a conical sharpening of the drill. It is not facet sharpening. You can not produce a 4 facet drill with a conical sharpening. I believe most 4 facet grinding is done by moving the drill facet in a linear motion across the...
  7. P

    Tool Vevor Drill Bit Sharpener Improved

    Ok, I do not believe the Vevor sharpens a drill with a true 4 facet grind. I am most likely wrong. If the drill is turned in a eccentric path around the stone you are preforming a conical sharpening of the drill bit. The bit is then given a relief angle. (on the 13A.) This is not 4...
  8. P

    Tool Vevor Drill Bit Sharpener Improved

    I have a question for one of you gents that has one of these machines. When you place the collet assembly. in the first hole to sharpen the drill, is the motion of the drill bit concentic or eccentric to the hole that the collet goes into? (rotates around the center or offset from center)
  9. P

    Tool Vevor Drill Bit Sharpener

    From what I see these are a standard size wheel that you should be able to purchase at multiple sources. CBN or diamond. No dressing required. Long life wheels. I think SDC230 or CBN230 will get you what you need.
  10. P

    Tool Vevor Drill Bit Sharpener

    Check out this video @7:05 Sharpen, split point and web thinning. Good visuals.
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