Problems with final product

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Problems with final product

Postby tonybell96 » Sat Feb 13, 2016 8:14 pm

Hello,

I am rather new to Aspire, but have an interesting, yet frustrating, problem.

I purchased the attached model and ran it on a piece of 3/4 in walnut (Love working with walnut) using a 1/8 in ballnose.

In the center of the ship there is a triangle piece that did not cut, there is also a "line" that stretches out on both sides of the triangle. I have attached screenshots of my setup, but when I preview the file it looks perfectly fine.

Thanks in advance!
Tony
Attachments
Screenshot 2016-02-12 13.49.42.png
Screenshot of setup
Screenshot 2016-02-12 13.50.09.png
screenshot of setup 2
IMG_4165.JPG
final piece
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Re: Problems with final product

Postby mtylerfl » Sat Feb 13, 2016 8:54 pm

Perhaps your Z-zero was "off" and left that bit of material behind when you carved the project. Hard to tell from the tiny photo. Try running it again, but make certain your Z-zero is correctly set. Maybe run the project on cheap wood or MDF for the test before running on more Walnut.

Another thing some folks like to do is to set the model slightly below the top surface of the material (to assure no "flat spots" are left uncarved). This is done in your Material Setup menu (Gap Above Model setting).
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Re: Problems with final product

Postby tonydude919 » Sat Feb 13, 2016 9:29 pm

Your z setting is set too high, lower it to 1 losing step and hitting your upper z limit

Tony
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z1.JPG
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Re: Problems with final product

Postby mtylerfl » Sat Feb 13, 2016 10:19 pm

tonydude919 wrote:Your z setting is set too high, lower it to 1 losing step and hitting your upper z limit

Tony


Hmmm. Possibly. I understood the Shark HD had 7" of Z, so I wouldn't think the 3" Home Position setting he has would normally be a problem. (Unless his spoilboard is unusually thick and "wasting" a lot of Z capacity.)

In any case, I agree it's likely just a z-zero issue as I stated above.
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Re: Problems with final product

Postby Bob Jr » Sat Feb 13, 2016 10:30 pm

The actual Z clearance on that machine is closer to 5.5 inches minus 1 to 2 inches for the bit extension, and the 3" home, and a .75" spoil board.
Yup, that's real close to end of Z travel.
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Re: Problems with final product

Postby mtylerfl » Sat Feb 13, 2016 10:32 pm

Thanks, Bob. Good to know.
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Re: Problems with final product

Postby Pete Cyr » Tue Feb 16, 2016 5:40 pm

The model you cut appears to be inverted ( the high parts are low and the low parts are high)
If you are setting Z to jump clamps your setting makes sense for the rapid move setting.
I suspect the job material thickness and model height are the problem with the flat spots in the finished model......the inverted appearance...I am unsure what you did to achieve that
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Re: Problems with final product

Postby mtylerfl » Tue Feb 16, 2016 6:29 pm

Pete Cyr wrote:The model you cut appears to be inverted ( the high parts are low and the low parts are high)...


Might be an optical illusion. I don't think the model is inverted.
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Re: Problems with final product

Postby Pete Cyr » Tue Feb 16, 2016 6:55 pm

I have carved that model quite a few times - -if you look at the handle of the sword (bottom of the pic) you will note it is concave vice convex

The waves are convex vice concave.
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Re: Problems with final product

Postby mtylerfl » Tue Feb 16, 2016 7:44 pm

Pete Cyr wrote:I have carved that model quite a few times - -if you look at the handle of the sword (bottom of the pic) you will note it is concave vice convex

The waves are convex vice concave.


I must need new glasses. I'm still not seeing that. :shock:
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Re: Problems with final product

Postby Frunple » Tue Feb 16, 2016 9:40 pm

Pete Cyr wrote:I have carved that model quite a few times - -if you look at the handle of the sword (bottom of the pic) you will note it is concave vice convex

The waves are convex vice concave.


Look at the shadow from the shield... It's carved right. Just an optical illusion.
I can't see the "triangle" referenced in the OP though. Looks like it all cut but hard to tell from such a small image capture.

I see it now, it's on the cut part, not the model....
Is that triangle flat? IE, is it the top of the board you used?
Probably help if you post the toolpaths used.
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Re: Problems with final product

Postby tonybell96 » Wed May 18, 2016 2:48 am

Here is my toolpath... again any help would be great as the "line" is still there.
Attachments
swo 2.jpg
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Re: Problems with final product

Postby Frunple » Wed May 18, 2016 1:24 pm

tonybell96 wrote:Here is my toolpath... again any help would be great as the "line" is still there.


That's not the toolpaths, just the setup.
post the .crv3d file.
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Re: Problems with final product

Postby Pete Cyr » Thu May 19, 2016 4:03 pm

In the last screen shot it shows 0.0003 material on top.
that number should be 0.00000 or else you will be left with some material on top......like the triangle you refer to.
Are you cutting this model to make a mold?
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Re: Problems with final product

Postby martin54 » Thu May 19, 2016 11:28 pm

Pete Cyr wrote:In the last screen shot it shows 0.0003 material on top.
that number should be 0.00000 or else you will be left with some material on top......like the triangle you refer to.
Are you cutting this model to make a mold?


Don't think that's right Pete, by setting a gap above the model it forces the model further into the material as far as I know. People use this when the material may not be completely flat to ensure that the highest parts of the model cut & are not left unmachined due to a low spot in the material
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