New Scanner-Is this right??

[c6craig]

Hi all,

I ran my first scan with the probe tonight and I'm not too sure if my results are typical. Maybe someone with more experience can tell me if this is what I can expect?

The scan was of a Woodcraft knife blank. I specifically wanted to scan something metal to see if it scratched the surface.

What suprised me...and what I am wondering if is normal...when the probe moved along the knife surface, I expected more of a dragging motion. This was more of a sewing machine style rapid paced tapping. As a result, instead of the smooth surface I expected, I ended up with this.

Any advice?? Am I doing something wrong or is this typical?

Thanks in advance,
Craig

knifescan1.ptn

[bjbethke]

Hi all,

I ran my first scan with the probe tonight and I'm not too sure if my results are typical. Maybe someone with more experience can tell me if this is what I can expect?

The scan was of a Woodcraft knife blank. I specifically wanted to scan something metal to see if it scratched the surface.

What suprised me...and what I am wondering if is normal...when the probe moved along the knife surface, I expected more of a dragging motion. This was more of a sewing machine style rapid paced tapping. As a result, instead of the smooth surface I expected, I ended up with this.

Any advice?? Am I doing something wrong or is this typical?

Thanks in advance,
Craig

knifescan1.ptn

It should be smooth, the last time I had a problem like that was the item was not mounted tight to the sled.

[geekviking]

That's how some of my knife scans came out too. I used blur or degauss or something in the pattern editor to smooth them out.
By the way, thanks for the pattern, would you mind sharing any others you do, I've been trying to get a good wooden knife collection going...
Thanks again!

[eromran]

Try taking a small mirror or piece of glass make sure and clean it good then scan it. It can be a really small piece so the scan wont take long (2 or 3 inches) be sure when you scan you are picking normal or best and the scan should come out smooth on top. If it does not post the results. Let us know how it comes out any how.

[c6craig]

Thanks, I will try the mirror trick tonight. I have the machine doing a 4 hour scan now on a different knife blank to see if it does the same thing. I really made sure this one was solidly attached to the sled and not moving in any way. I can pretty much already hear the thing tapping along the surface though so I expect the same result...

Truck seems to move along smoothly until it contacts the item, I even removed the flexshaft from the truck as recommended.

I do select Best quality and set the depth just off the board, using a credit card to touch down on.

Thanks,
Craig

[c6craig]

Well this is a little disappointing. I did a Best quality scan on a nice smooth piece of corian i had laying around just to use both the "glass" and "non metal" theories and it came out the same way. It kind of chattered across the surface which I know understand is normal. But there is so much noise on the pattern I don't see how I am going to be able to clean up anything detailed....

Thanks,
Craig

coriantest.ptn

[AskBud]

Thanks, I will try the mirror trick tonight. I have the machine doing a 4 hour scan now on a different knife blank to see if it does the same thing. I really made sure this one was solidly attached to the sled and not moving in any way. I can pretty much already hear the thing tapping along the surface though so I expect the same result...

Truck seems to move along smoothly until it contacts the item, I even removed the flexshaft from the truck as recommended.

I do select Best quality and set the depth just off the board, using a credit card to touch down on.

Thanks,
Craig

The Probe is quite sensitive! I talked with another user a few weeks ago, where he scanned a carving he did, so he could make a pattern of just one specific portion. the probe even picked up the grain of the wood, which he could not fathom, as it felt smooth to the touch.

If there is any texture to your model, it will appear in the scan.

Since there is no metal/conductor on the floor of your scanning sled, there is no way for an electrical transfer to the probe of any sort.
My guess is that the knife has contours/textures/pits that you can not see with the naked eye or feel with your fingers. Knives are generally pounded into shape and then ground & polished. Even other items that appear flat & smooth may have pits that will appear. The probe, by design, have a feel/touch finer than the trained blind person!

You could clean the Z-rails and bearings to assure a smoother up & down movement, however, this may give you even more sensitivity. As a former Toolmaker's apprentice, I bet on pits on the knife!
AskBud

[c6craig]

That's how some of my knife scans came out too. I used blur or degauss or something in the pattern editor to smooth them out.
By the way, thanks for the pattern, would you mind sharing any others you do, I've been trying to get a good wooden knife collection going...
Thanks again!

I just posted both this one and a Woodcraft Tanto blank over in pattern sharing depot if you want it..

Craig

[geekviking]

Awesome! Thanks!

[CarverJerry]

Did you make sure the probe was tight in the chuck, and are you using the QC, Rock or Carvetight.

CJ