Diamond drag bit problem
Diamond drag bit problem
I am using Aspire with thin brass sheets. This is the second project in a row that I am having a problem with. One just before these two came out fine. I am still fairly new to the Aspire/CNC scene, so, I believe the problem is my ignorance.
On both projects, the engraving is coming out bigger than it shows in the Aspire program. No matter what parameters I change it does not change the size of the actual engraving. I have tried creating a sized box and putting the text within the box to make sure it does not engrave outside the boundary of the box. That does not help either.
Any advice would be greatly appreciated.
Thanks,
David
On both projects, the engraving is coming out bigger than it shows in the Aspire program. No matter what parameters I change it does not change the size of the actual engraving. I have tried creating a sized box and putting the text within the box to make sure it does not engrave outside the boundary of the box. That does not help either.
Any advice would be greatly appreciated.
Thanks,
David
- Adrian
- Vectric Archimage
- Posts: 14544
- Joined: Thu Nov 23, 2006 2:19 pm
- Model of CNC Machine: ShopBot PRS Alpha 96x48
- Location: Surrey, UK
Re: Diamond drag bit problem
Can you attach some pictures and ideally the project file (CRV3D) itself? It could be many things so a bit more info will help narrow it down.
Re: Diamond drag bit problem
I am working on attaching the aspire file. It says file too large....
Re: Diamond drag bit problem
Here is the file. Thanks
this was an ealier version that was actually a larger font and material size; yet it is only 1 kb where my smaller font and smaller material size file in 18 kb?
this was an ealier version that was actually a larger font and material size; yet it is only 1 kb where my smaller font and smaller material size file in 18 kb?
- Attachments
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- macy bigger.crv3d
- (1.14 MiB) Downloaded 81 times
- Adrian
- Vectric Archimage
- Posts: 14544
- Joined: Thu Nov 23, 2006 2:19 pm
- Model of CNC Machine: ShopBot PRS Alpha 96x48
- Location: Surrey, UK
Re: Diamond drag bit problem
Can't really tell a lot from that file as the single toolpath doesn't relate to the vectors.
There are a couple of issues with the font though which may or may not be the cause of your problems. The lower case b's have a crossover on them which can mess up some toolpaths. You would need to convert the text to curves and node edit to remove those or convert to curves and do an offset/inset.
What type of toolpath are you using for the text? If it's a v-carve/engraving toolpath one problem I've seen a few times is people setting a start depth when they meant to set a flat depth and that will make all the text bigger due to the nature of how an angled bit cuts.
Grasping at straws a bit though without pictures or the full file.
If the file with the issues is too big to upload you could try zipping it or using a cloud service such as DropBox or OneDrive.
There are a couple of issues with the font though which may or may not be the cause of your problems. The lower case b's have a crossover on them which can mess up some toolpaths. You would need to convert the text to curves and node edit to remove those or convert to curves and do an offset/inset.
What type of toolpath are you using for the text? If it's a v-carve/engraving toolpath one problem I've seen a few times is people setting a start depth when they meant to set a flat depth and that will make all the text bigger due to the nature of how an angled bit cuts.
Grasping at straws a bit though without pictures or the full file.
If the file with the issues is too big to upload you could try zipping it or using a cloud service such as DropBox or OneDrive.
Re: Diamond drag bit problem
Thanks Adrian! I will try your suggestions.
I will work on this this morning. Also trying to watch the Annual UGM.
I will work on this this morning. Also trying to watch the Annual UGM.
Re: Diamond drag bit problem
Well, I fixed the problem with the lower case “B”.and reran it. That did not help.
Here is the link to the file in Dropbox.
Again, thank you for taking your time to help me. I know how valuable time is!
https://www.dropbox.com/s/qmpepqdxne6gq ... crv3d?dl=0
Here is the link to the file in Dropbox.
Again, thank you for taking your time to help me. I know how valuable time is!
https://www.dropbox.com/s/qmpepqdxne6gq ... crv3d?dl=0
- Adrian
- Vectric Archimage
- Posts: 14544
- Joined: Thu Nov 23, 2006 2:19 pm
- Model of CNC Machine: ShopBot PRS Alpha 96x48
- Location: Surrey, UK
Re: Diamond drag bit problem
There's nothing obviously wrong with the file that I can see. The preview is correct and that generally means it's going to be an issue outside of the Vectric software with how you're setting up the job in your controller software and/or physically on the machine.
Is there anything different that you can think of that you did with the ones that worked correctly and the ones that didn't?
Is there anything different that you can think of that you did with the ones that worked correctly and the ones that didn't?
Re: Diamond drag bit problem
Well, I fixed the problem with the lower case “B”.and reran it. That did not help.
Here is the link to the file in Dropbox.
Again, thank you for taking your time to help me. I know how valuable time is!
https://www.dropbox.com/s/qmpepqdxne6gq ... crv3d?dl=0
Here is the link to the file in Dropbox.
Again, thank you for taking your time to help me. I know how valuable time is!
https://www.dropbox.com/s/qmpepqdxne6gq ... crv3d?dl=0
Re: Diamond drag bit problem
No, not that I can think of. The two different projects each use different fonts than the one that did work. I am using the Quick Engrave tool path. I am stumped.
- adze_cnc
- Vectric Wizard
- Posts: 4327
- Joined: Sat Jul 27, 2013 10:08 pm
- Model of CNC Machine: AXYZ 4008
- Location: Vancouver, BC, Canada
Re: Diamond drag bit problem
Unfortunately "bigger" and "change the size" aren't very diagnostic without qualifiers (e.g. twice as big, should be 1cm but is 10cm, etc.).
Can you upload a picture of the bad brass engraving and perhaps a picture of the Aspire toolpath simulation (for those of use without Aspire)?
Perhaps also some details describing where on the brass piece things are wrong?
Re: Diamond drag bit problem
I will do that in a little while. Thank you.
Re: Diamond drag bit problem
This is an engraving of a poem that a friend of mine wrote for another friend for a hole in one. At the end, the last line is "Let it fly, and do it again". For the portion of the line that reads "Let it fly and DO IT", A measurement in the 2D view shows 3.01 inches. However, the actual engravement shows 4 3/16 inches, approximately 39% larger than the correct measurement.
The placement of the entire engraving is proper.
One of the attached pics is the measurement of the actual engraving; the second one is the measurement of the Aspire 2D measurement.
Thanks for looking.
The placement of the entire engraving is proper.
One of the attached pics is the measurement of the actual engraving; the second one is the measurement of the Aspire 2D measurement.
Thanks for looking.
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- Vectric Craftsman
- Posts: 129
- Joined: Tue Feb 06, 2018 9:18 pm
- Model of CNC Machine: CNC 6040, Vectric Aspire, UCCNC
- Location: Skane, Sweden
Re: Diamond drag bit problem
Could it be a machine/controller problem? You have not mentioned what machine&controller you have.
What preprocessor do you use?
How do you transfer the gcode from you computer to the CNC?
What preprocessor do you use?
How do you transfer the gcode from you computer to the CNC?
Re: Diamond drag bit problem
I have the Longmill 30 x 30 with an Arduino controller. I use Gsender to communicate with the CNC router.