Hello, I am new to the community and am desperate for some help. I own a CNC shark I purchased a couple of years ago. I purchased it with BobCam for Solidworks instead of Vcarve and have been sorry every since. I have never been able to get BobCam to work... so I recently purchased Cut2D to try and cut some pockets in a piece of oak lumber for a project. I have been able to generate the code and preview the cut paths in the software but I cannot get the Shark to be consistent with the code. Sometimes is runs is OK. other times it freaks out and doesn't follow the correct path. I have been asking for help from NextWave and Vectric, but I am not getting help very fast. They are trying, but its taking too long.
I have tried both versions of the control software from Next Wave, I have gotten post processor files from both companies - but nothing is really fixing the problem. It seems fine with basic files - circles, squares, etc,. But I need a multi-layered pocket.
Can anyone help?
I can send a .tap file if that helps
CUT2D AND CNC SHARK COMPATIBILITY
Moderators: ddw, al wolford, sbk, Bob, Kayvon
Re: CUT2D AND CNC SHARK COMPATIBILITY
Hi,
Posting your cut 2D crv file would probably be more helpful to let us see what you are trying to machine. You can also post your tap file and we can use it to compare.
Buc
Posting your cut 2D crv file would probably be more helpful to let us see what you are trying to machine. You can also post your tap file and we can use it to compare.
Buc
I have not failed. I've just found 10,000 ways that won't work.
Thomas A. Edison
The Only Easy Day Was Yesterday
Thomas A. Edison
The Only Easy Day Was Yesterday
-
FERGUSOPTICAL
- Posts: 10
- Joined: Sat Nov 26, 2011 5:39 pm
Re: CUT2D AND CNC SHARK COMPATIBILITY
Thank you, attached is the .crv file. I cannot get the tap file to upload - I am getting a message that its not allowed, nor is a txt. file. I pasted the code below instead.
G90
G20
F100.0
G64 P0.1
S 2000
M3
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G20
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F100.0
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F100.0
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M02
- Attachments
-
- IPHONE CASE.crv
- CUT 2D .crv file
- (149 KiB) Downloaded 261 times
Re: CUT2D AND CNC SHARK COMPATIBILITY
When I was having trouble getting my Shark to go exactly where I wanted it to I tried adjusting the Path Control Mode. That's the line near the top starting with G64. It basically helps the machine run smoother by telling it what tollerance you're willing to allow in the cut paths.
I tested the adjustment on a couple of tap files then finally adjusted the setting in my post processor file.
here are the allowable values for this line:
Path Control Mode
G61 Exact Path mode
G61.1 Exact Stop mode
G64 Px (where x is a number. I use .001) Continuous mode with optional path tolerance
The G61 setting can really make your machine rattle and shake so if you're going to use them slow it down.
Hope this helps.
I tested the adjustment on a couple of tap files then finally adjusted the setting in my post processor file.
here are the allowable values for this line:
Path Control Mode
G61 Exact Path mode
G61.1 Exact Stop mode
G64 Px (where x is a number. I use .001) Continuous mode with optional path tolerance
The G61 setting can really make your machine rattle and shake so if you're going to use them slow it down.
Hope this helps.
Paul Fison
Tacoma, Washington, USA
(253) 925-0855
Tacoma, Washington, USA
(253) 925-0855
Re: CUT2D AND CNC SHARK COMPATIBILITY
i had to do the firmware updateFERGUSOPTICAL wrote:Hello, I am new to the community and am desperate for some help. I own a CNC shark I purchased a couple of years ago. I purchased it with BobCam for Solidworks instead of Vcarve and have been sorry every since. I have never been able to get BobCam to work... so I recently purchased Cut2D to try and cut some pockets in a piece of oak lumber for a project. I have been able to generate the code and preview the cut paths in the software but I cannot get the Shark to be consistent with the code. Sometimes is runs is OK. other times it freaks out and doesn't follow the correct path. I have been asking for help from NextWave and Vectric, but I am not getting help very fast. They are trying, but its taking too long.
I have tried both versions of the control software from Next Wave, I have gotten post processor files from both companies - but nothing is really fixing the problem. It seems fine with basic files - circles, squares, etc,. But I need a multi-layered pocket.
Can anyone help?
I can send a .tap file if that helps
-
FERGUSOPTICAL
- Posts: 10
- Joined: Sat Nov 26, 2011 5:39 pm
Re: CUT2D AND CNC SHARK COMPATIBILITY
Fison, thank you for the advice. Can you just update the top line of your g-code .tap file each time? Do you just type in "G64P.001"? +/- .001" is very tight and if it helps I am totally on board. I see the code I uploaded has "G64P0.1" is this a looser setting? Am I understanding what you mean?
baby15, Thanks for your help. I did manage to update the firmware. I am not sure if that made any difference, but I am current for now. - I have been asked to update it a few times now - should I be worried?
I did get a reply from Vectric that helped a lot, They suggested I slow down my feed rates to below 50lpm. That fixed most of the problems, but not all of them. I have a few pockets that have several hundred lines of code and they still have problems at the end... They will cut 99% right, but on the last pass, they start cutting a totally different shape as if it were programmed to do so. Also, I am worried about a slow feed rate for materials other than wood. I am pretty sure I need a faster feed rate for plastics.
I did notice the cuts that had troubles were cuts that didn't start a Z,0. I had them programed to start cutting inside another pocket - that pocket was recessed from the surface of my material. When I re-programmed them to start at zero they worked. But I had to sit and watch my machine cut air for 10 minutes before it hit the recessed material.
Thanks again for your help, Chris
baby15, Thanks for your help. I did manage to update the firmware. I am not sure if that made any difference, but I am current for now. - I have been asked to update it a few times now - should I be worried?
I did get a reply from Vectric that helped a lot, They suggested I slow down my feed rates to below 50lpm. That fixed most of the problems, but not all of them. I have a few pockets that have several hundred lines of code and they still have problems at the end... They will cut 99% right, but on the last pass, they start cutting a totally different shape as if it were programmed to do so. Also, I am worried about a slow feed rate for materials other than wood. I am pretty sure I need a faster feed rate for plastics.
I did notice the cuts that had troubles were cuts that didn't start a Z,0. I had them programed to start cutting inside another pocket - that pocket was recessed from the surface of my material. When I re-programmed them to start at zero they worked. But I had to sit and watch my machine cut air for 10 minutes before it hit the recessed material.
Thanks again for your help, Chris
Re: CUT2D AND CNC SHARK COMPATIBILITY
If I can be of any help on the BobCAM Software I am just a phone call away!
Al DePoalo
BobCAM Team Leader
877-262-2231 X147
Al DePoalo
BobCAM Team Leader
877-262-2231 X147
Re: CUT2D AND CNC SHARK COMPATIBILITY
You can adjust that each time. Actually putting the P.1 to P.01 would work just as well.
We will have new Post processors out this week on our website.
We will have new Post processors out this week on our website.
-
FERGUSOPTICAL
- Posts: 10
- Joined: Sat Nov 26, 2011 5:39 pm
Re: CUT2D AND CNC SHARK COMPATIBILITY
Thanks Tim,
Do you think the new post processor will help with my issues?
Do you think the new post processor will help with my issues?
Re: CUT2D AND CNC SHARK COMPATIBILITY
I ran the crv file through my workflow and it cut with no problems.
If your machine is from the BobCad era, are you running Mach3 direct into the Shark with a parallel cable?
The only adjustment I made was to slow down the ipm to 60 rather than the 100 it was intending to use.
100 ipm with a .250 cutter is quite fast on the initial full width cuts.
I have found that I need to be much slower for maintaining any kind of tolerances. (cutting gears and pockets for bearings etc.)
My workflow was Cut2-d to Mach3 to Shark (direct into xylotex driver), No NCpod.
I ran the files 3 times , two into wood, 1st one in air. all ran fine at 60 ipm.
The back of the case is very thin, ( .007ish inches.) What material are you cutting for this part ?
good material holding and setting the z very closely will be important.
Hope this helps
Bob
If your machine is from the BobCad era, are you running Mach3 direct into the Shark with a parallel cable?
The only adjustment I made was to slow down the ipm to 60 rather than the 100 it was intending to use.
100 ipm with a .250 cutter is quite fast on the initial full width cuts.
I have found that I need to be much slower for maintaining any kind of tolerances. (cutting gears and pockets for bearings etc.)
My workflow was Cut2-d to Mach3 to Shark (direct into xylotex driver), No NCpod.
I ran the files 3 times , two into wood, 1st one in air. all ran fine at 60 ipm.
The back of the case is very thin, ( .007ish inches.) What material are you cutting for this part ?
good material holding and setting the z very closely will be important.
Hope this helps
Bob