exported dxf to sheet cam

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bikerman883
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Joined: Sun May 05, 2019 6:35 pm

exported dxf to sheet cam

Post by bikerman883 » Mon May 27, 2019 7:07 am

i am hoping someone can help, I am new to using sheet cam and have scaled down a file and when I load into sheet cam it goes back to the original size of 24" I am wanting it at 12". am I doing something wrong or is this not possible to do?

plasmanewbie
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Re: exported dxf to sheet cam

Post by plasmanewbie » Mon May 27, 2019 8:39 am

Not judging your expertise but I have the same issue in the past and it was a simple fix. Turned out I kept opening the original file and not the re-scaled file. Try naming your re-scaled file a unique name so you know you have the right one.

53hudson
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Re: exported dxf to sheet cam

Post by 53hudson » Mon May 27, 2019 8:53 am

Another option to solve the issue is when you import image into sheetcam a popup menu appears, on it you will see a scaling option by default it is set to 1:1 but you can change the factor to anything you want it to be not having to necessarily go back to your drawing file.

bikerman883
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Re: exported dxf to sheet cam

Post by bikerman883 » Mon May 27, 2019 10:15 am

Ok thanks, I got it. Now have an issue with torch firing and staying in one position for about 3 seconds before cutting a line. Then when it does it doesn’t always do the whole line and does segments.

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plasmanewbie
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Re: exported dxf to sheet cam

Post by plasmanewbie » Mon May 27, 2019 10:59 am

bikerman883 wrote:
Mon May 27, 2019 10:15 am
Ok thanks, I got it. Now have an issue with torch firing and staying in one position for about 3 seconds before cutting a line. Then when it does it doesn’t always do the whole line and does segments.
Check your Pierce Delay time. It is important to delay long enough to fully pierce the material before the torch moves but yours is obviously delaying for far to long. This will ruin your nozzles very quickly which leads to other problems and so the snowball of issues begins for many new users :-x

As for the segmented lines that could be a number of things. Is your plasma cutter showing you an error? Is the machine still moving through the cutpath and just not cutting anything? More info would be helpful on this issue.

Les Newell
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Re: exported dxf to sheet cam

Post by Les Newell » Mon May 27, 2019 2:12 pm

Are you using Mach3?
If so go to Config->ports and pins->spindle setup and make sure the spindle delays are all set to 0.
When you say you are getting segmented cuts, is the torch stopping then restarting to continue the cut? If so you could have breaks in your outlines. In SheetCam any outlines with breaks are coloured grey. Fully closed outlines are red or yellow.

bikerman883
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Re: exported dxf to sheet cam

Post by bikerman883 » Mon May 27, 2019 3:41 pm

I have pierce delay set at .5 the torch fires and sits there too long before moving. I don’t have that issue with fusion 360. Only with sheet cam, yes I am using mach3. I didn’t get any errors when I did the tool path, it cuts and then sits there and turns off, and starts again for the other half of the line.

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acourtjester
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Re: exported dxf to sheet cam

Post by acourtjester » Mon May 27, 2019 4:29 pm

I think the problem is the drawing having way to many nodes, here is the same in SheetCam and you can see there is far lass nodes in it. I cut it fine. Are you using any cut rules when you post process? The files I used was downloaded from here as a DFX file. I am attaching it I did not do the original drawing just downloaded it.
American flag and bald eagle.dxf
eagle.JPG

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DIY 4X4 Plasma/Router Table
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bikerman883
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Re: exported dxf to sheet cam

Post by bikerman883 » Tue May 28, 2019 5:27 am

Thanks for the help, I was able to make it with that file and shrinking it down

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