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TOPIC: How would you sharpen this? (Thermomix Vorwerk)

How would you sharpen this? (Thermomix Vorwerk) 8 months 3 days ago #15237

  • razoredgeknives
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So I had a customer want to know if I can sharpen this... I figured yea why not? (after looking at a pic he send me). After I get it in my hands, I can't really tell which side the blades are sharpened from (onside or outside?) I'm assuming that Leo and Mark may have more insight into this due to your geographical location :-) does it matter which side I sharpen these blades from?

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How would you sharpen this? (Thermomix Vorwerk) 8 months 3 days ago #15240

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razoredgeknives wrote:
So I had a customer want to know if I can sharpen this... I'm assuming that Leo and Mark may have more insight into this due to your geographical location :-) does it matter which side I sharpen these blades from?

I can't even figure out what it is :-)
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How would you sharpen this? (Thermomix Vorwerk) 8 months 3 days ago #15241

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Ah, I should read better :-) . I now see what it is. However, I'm afraid I don't quite understand the question. What do you mean by "which side these blades are sharpened from". Why not follow the form a blade already has (by sharpening or gotten otherwise)? And what is onside and outside here?
Last Edit: 8 months 3 days ago by mark76.
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How would you sharpen this? (Thermomix Vorwerk) 8 months 3 days ago #15242

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A blender or food processor blade?
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How would you sharpen this? (Thermomix Vorwerk) 8 months 3 days ago #15243

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Bobg wrote:
A blender or food processor blade?

Exactly :-)
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How would you sharpen this? (Thermomix Vorwerk) 8 months 3 days ago #15244

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mark76 wrote:
Ah, I should read better :-) . I now see what it is. However, I'm afraid I don't quite understand the question. What do you mean by "which side these blades are sharpened from". Why not follow the form a blade already has (by sharpening or gotten otherwise)? And what is onside and outside here?

Because it's actually quite difficult to tell which side it was originally sharpened from... Look close at the pics and see if you can see? I'm leaning on sharpening from the inside edge (or the side of the blade that is closest to the gear and rubber gasket). It looks like there's some way to take this thing apart, but I don't want to try and break anything (I think these things are around $150 to replace).
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How would you sharpen this? (Thermomix Vorwerk) 8 months 3 days ago #15247

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I'll be interested in hearing how it works out, and what angle you used. I think I'd sharpen the same side you are referring to.
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How would you sharpen this? (Thermomix Vorwerk) 8 months 2 days ago #15255

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Josh, I don't know this brand of food processor, but I took a look at my own. In fact we have even two at home :-). On one of the the blades have quite certainly been sharpened. On the other they have quite certainly not been and these blades look much like yours. I don't know what process they use to get these blades into shape, but that process has also been used to make a sort-of edge on the blades of the latter. But this edge is not just blunt, it is extremely blunt (and not because the food processor has been used so much). I guess the reason this food processor still cuts relatively well is that quite large forces are used to cut the veggies. But, then, I must say, these veggies sometimes look more mashed than cut.

My intuition also says to sharpen the side you are referring to, because you keep the original angles in tact as much as possible. Maybe a very small bevel on the other side. I'd also use a large angle, since these blades use much more force to cut than a human-driven knife.

Success! And let us know what you did and how it works out.
Last Edit: 8 months 2 days ago by mark76.
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How would you sharpen this? (Thermomix Vorwerk) 8 months 2 days ago #15256

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Do you have any way to compare it to an original blade just to be sure how sharp it should be?
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How would you sharpen this? (Thermomix Vorwerk) 8 months 2 days ago #15262

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Bobg wrote:
Do you have any way to compare it to an original blade just to be sure how sharp it should be?

Nope... They're apparently harder to find in the US. Well I did end up getting it sharpened! It was ridiculous and pretty difficult to figure it out. I ended up getting cut in a few places on my hands. Unfortunately I forgot to get any after pics! Maybe I can swing by and get a couple in a few. It went pretty well... I used my radiused wheel that I use for serrated sharpening to fit all of the contours, I also used a 1" belt somewhat. Turned out sharp enough to shave the hair on your arm at least! :-)
Last Edit: 8 months 2 days ago by razoredgeknives.
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