Ruined Pocket and Profile Sign

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Ruined Pocket and Profile Sign

Postby dbornyk » Mon Feb 27, 2017 3:03 am

Created a simple sign using pocket and v-bit paths with advanced options cutting down .200" then cut out sign with profile path. Works with .200" but I tried another with .275" and re calc all paths. Cuts fine for v-bit and numbers and border but when the Profile goes to cut out, first its rests in middle of 4 where v-bit left off. Before it lifts to move and begin its path it slices through the top of 4. See images. Happened Twice.

Is it advanced toolpath options?
Is it post processor?
Is something else wrong?

Please Help
Attachments
Cut.JPG
Cut
TP1.PNG
Path 1
TP2.PNG
Path 2
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Re: Ruined Pocket and Profile Sign

Postby Will Williamson » Mon Feb 27, 2017 3:51 am

Router bit could have slipped down.
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Re: Ruined Pocket and Profile Sign

Postby dbornyk » Mon Feb 27, 2017 4:41 am

No. It didn't slip down. Did the exact same thing twice. Good suggestion though
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Re: Ruined Pocket and Profile Sign

Postby highpockets » Mon Feb 27, 2017 4:43 am

Check your safe Z and Z1 and Z2 setting on the project
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Re: Ruined Pocket and Profile Sign

Postby dbornyk » Mon Feb 27, 2017 1:55 pm

Mine are set as follows, in the image. I set them the same as Vectric's Tutorials in several places on their site.
Attachments
z_settings.JPG
Z Settings
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Re: Ruined Pocket and Profile Sign

Postby Leo » Mon Feb 27, 2017 1:58 pm

Why do you have "project onto 3D model" selected. You don't need that.
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Re: Ruined Pocket and Profile Sign

Postby scottp55 » Mon Feb 27, 2017 2:57 pm

There was a bug way back in VCP8.014 that was cured, but maybe check and see if the toolpath has a blue line through the "4" like on this Fleur-de-lis button in pics?
Is your endmill made to plunge cut?
What are Z Plunge rates for that cut?
Just wondering if possibly you were losing steps on that cut(if the plunge was last move)?
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Attachments
VCP8.014 TOOLPATH DUPLICATED TOOLPATH 2.jpg
VCP8.014 TOOLPATH DUPLICATED TOOLPATH 2A.jpg
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Re: Ruined Pocket and Profile Sign

Postby Adrian » Mon Feb 27, 2017 4:26 pm

Are you re-zeroing the Z after changing the bit? Is it 100% accurate?

As Leo says turn off the Project onto 3D. You don't need that as there is no 3D model and it can sometimes cause issues if it's turned on when not needed.
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Re: Ruined Pocket and Profile Sign

Postby dbornyk » Mon Mar 13, 2017 8:49 pm

My suspicions appear to have been correct. I haven't paid too much attention to the Z1 and Z2 and home position settings until now. I've attached a new image for explanation sake. So when the 60° vbit finished its path it stopped and moved for tool change. After changing to 1/4" mill the machine moved to position where the vbit finished. In the middle of the number 4 on my wooden piece, .200" above the pocket's bottom. Because the pocket is .250" the mill skimmed the top of the 4.

When I changed the z settings to .400" there was enough clearance that the bit was now higher above not only the pocket but the whole wooden piece
Attachments
z_height.JPG
Z height
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Re: Ruined Pocket and Profile Sign

Postby Olle » Sun Jun 11, 2017 3:28 pm

dbornyk wrote:My suspicions appear to have been correct. I haven't paid too much attention to the Z1 and Z2 and home position settings until now. I've attached a new image for explanation sake. So when the 60° vbit finished its path it stopped and moved for tool change. After changing to 1/4" mill the machine moved to position where the vbit finished. In the middle of the number 4 on my wooden piece, .200" above the pocket's bottom. Because the pocket is .250" the mill skimmed the top of the 4.

When I changed the z settings to .400" there was enough clearance that the bit was now higher above not only the pocket but the whole wooden piece

I'm probably missing something here, but how can this happen when you have zero set to the top of material? What you describe makes it sound like you're zeroing at the bottom of the pocket cut...?
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Re: Ruined Pocket and Profile Sign

Postby TReischl » Sun Jun 11, 2017 9:09 pm

Doesn't sound like he zeroed the second tool.
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Re: Ruined Pocket and Profile Sign

Postby Olle » Mon Jun 12, 2017 6:30 pm

TReischl wrote:Doesn't sound like he zeroed the second tool.

Or zeroed below the actual top of the material.
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