.plt too .ngc

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21 Sep 2012 09:33 #24502 by andypugh
Replied by andypugh on topic Re:.plt too .ngc
twscnc wrote:

winstead of cutting a 1" box it will cut 25.400" box.

That just seems to indicate that it is generating metric G-code.
Put the machine in metric mode (G21) and it will make a 25.4mm box, and that is exactly 1".
(Or tell the CAM package that you want Imperial G-code)

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21 Sep 2012 10:23 #24505 by Rick G
Replied by Rick G on topic Re:.plt too .ngc

when i export my 1" box design as a dxf to a 3.5" disk i take it to my
router computer open the program select my design.


What program are you selecting your design from on the router computer?
As cncbasher has pointed out sounds like a metric/imperial issue.

Rick G

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22 Sep 2012 03:23 #24542 by twscnc
Replied by twscnc on topic Re:.plt too .ngc
i have given up on trying to convert dxf to ngc.
is there is a program out thare that will convert plt to ngc?

i don't know how to send an attachment.:blush:
i will take a colect call if somone has the time.
256-441-9347 (cell phone free mi.)
or e-mail your no. i will call you back on my dime
This email address is being protected from spambots. You need JavaScript enabled to view it.


thanks for all your help

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24 Sep 2012 11:29 #24578 by andypugh
Replied by andypugh on topic Re:.plt too .ngc
twscnc wrote:

i have given up on trying to convert dxf to ngc.

That ought to be simpler than PLT to G-code.
Have you tried SheetCAM, for example? (www.sheetcam.com/downloads.shtml)

is there is a program out thare that will convert plt to ngc?

PLT is an output file for controlling a plotter, so it is quite likely to not include some data that a G-code converter would need.
For example, the geometry may well be scaled to paper-size, and have no data on actual physical size.

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25 Sep 2012 02:45 #24596 by twscnc
Replied by twscnc on topic Re:.plt too .ngc
i ues vinyl master pro to make my designs.
then save it as a .plt on a 3.5" disk.
i take that to my cnc computer.
open my machin program.
select the image i need to cut.
and cut it.

but this machin program and controler
is very old (app. 15 years) it may not last much
longer.

thats whay i am trying to get emc2 to take it's place.

i need help getting my .plt file converted to .ngc.
i don't understand how to run a program that don't work the same way.
please help.

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25 Sep 2012 11:29 #24603 by andypugh
Replied by andypugh on topic Re:.plt too .ngc
twscnc wrote:

i ues vinyl master pro to make my designs.
then save it as a .plt on a 3.5" disk.


Can you save it in any other formats at this stage?

It would be really helpful to know what a .plt file looks like.

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25 Sep 2012 12:14 - 25 Sep 2012 12:17 #24606 by stevec
Replied by stevec on topic Re:.plt too .ngc
If you really want to work with HPGL files, take a look at HP2XX www.delorie.com/gnu/docs/hp2xx/hp2xx.1.html I have used it on Linux, but I think there is a windows version too.

Edit, that is a dead link, I will repair it soon ... done.
Last edit: 25 Sep 2012 12:17 by stevec.

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25 Sep 2012 12:16 #24607 by BigJohnT
Replied by BigJohnT on topic Re:.plt too .ngc
Interesting thread on SketchUp on the Home Shop Machinist forum.

John

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26 Sep 2012 11:16 #24635 by Rick G
Replied by Rick G on topic Re:.plt too .ngc
From VinylMaster's web site...

Can I operate an Engraver or Router?

Yes. VinylMaster can operate many engravers and routers and also exports .dxf which nearly all engravers and routers use to operate with their bundled software.


If you are using windows you may want to take a look here, it is simple, free and works...

www.dakeng.com/ace.html

Export your file as dxf then use Ace Converter to convert the dxf file to a ngc file that Linuxcnc can understand.

Rick G

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27 Sep 2012 02:13 #24657 by twscnc
Replied by twscnc on topic Re:.plt too .ngc
don't forget i have a problum exporting dxf files.
no matter what i export it comes out too big.
exporting 1" it inports as 24.400" not
24.400mm.
i don't know how to fix it .
even the software makers can't fix it .
i can export as .ai .
will that work?

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