.plt too .ngc

What program are you using to read the dxf files that is showing the size is wrong?
If it is a CAD program you can scale the project there then export it.
If 1" =25.4 " output and you cannot change the inch metric problem can you scale your work in Vinyl Master by a factor of 25.4?

Rick G

Set the LinuxCNC machine to metric (G21) and it will scale down the numbers by a factor of 25.4. That will probably fix the problem.
(Just accept that you are being given metric DXF files)

Not sure he has gotten the file to Linuxcnc yet.

Rick G

i did not know emc2 cud import a dxf.
i'l try that tomoro and see what hapons.

to anser the queston on programs i use to
import the dxf file.
vinyl master pro
corel drow 4
corel drow 9
k-cam 4 (kelly ware demo)
k-cam 4 (kern electronics) i use on my 4'x8' and 5'x10' table.
cut2d demo
gsimple
galaad demo

every program demo i downloaded.
i can't rember them all.

i did not know emc2 cud import a dxf.

Sorry No it can't,

You must convert it first to a ngc file that Linux can understand. See some of the earlier post of this thread.
If you are use to using Cut2d.

In your case you could create your drawing in Vinyl Master or Corel, export it as a dxf type file.
Then import the dxf file into Cut2d.

Cut2d has the ability to work in inch or metric. Select what works for you.
It also has the ability to scale your drawing. If your drawing it too large just scale it down.

When finished export it as a ngc.
I have not looked in a while but Vectric has had good tutorials. Take a look for one on Cut2d.

From Vectric's web site...

The Cut2D interface is very easy to understand and includes
the following design and machining functionality:
Boundary Creation & Vector Tools

* Open or Import industry standard file formats DXF, EPS,
AI & PDF files that contain vector data.

* Work in Inches or Metric units.

* Fix open shapes to make them continuous, machinable profiles. This is a typical problem with many DXF designs that are constructed from separate entities.

* Automatically identify and select duplicate shapes in a file. This is a typical problem when working with designs from older sign making packages.

* Text entry using any True Type or Open Type fonts installed on the PC as well as access to a selection of Single Line fonts.

* Text editing to increase or decrease individual character spacing and bend the text on a simple curve.

* Drawing Tools for standard shapes - Rectangles, Circles and Ovals with interactive sizing and positioning and a Polyline sketching tool.

* Scaling and Positioning interactively using the mouse or with precise typed input.

Rick G

i have two problums with cut2d.
or aney program like it.

(one) i only have the demos.
(two) $$$$$$$$$$$$$$.

i drow a small ssi check.
not mutch money to spend on a hobby.
the machines i have were built when i
was working.
the big C put a stop to that.
looking for somthing verry cheep or free.

sorry if i wasted your time.
just looking for a little help.

Hey, you are not wasting anybody's time. It will take a small amount of your time to experiment and understand how to do this. It really is a non problem that just needs a bit more knowledge to fix.
Any free cad program such as Librecad or Draftsight (google them) and many others will rescale a DXF, once that is figured out, then move onto the DXF> GCode conversion. It just takes time to figure out.
Can you give a few more details about your machines, a 10' x 5' cnc machine is something I can only dream about having in my 6'x6' home workshop.

www.dakeng.com/ace.html

Ace converter is free. You can use it to take a dxf file and convert it to an ngc that Linuxcnc can run.

If you cannot fix the inch metric issue try just scaling your design in vinyl master.
Say you want a 12" square can you draw that and then scale it in Vinyl Master by a factor of 25.4?
1/25.4 = .03937

12" * .03937 = .47244 so a 12" box turn out to be a .47244" box save that as a dxf file and see what happens.

Have you tried to import any of the converted files to Linuxcnc yet?

If not try that first, see what happens.

Also as pointed out before put Linuxcnc in metric mode and 25.4 can become 1". In which case you will not need to scale anything in Vinyl Master.

Rick G