Hey Modonnell,
Nice job putting together your first Vector Image!!! I have a few suggestions that might help you out in the future....
I attached a image of your DXF that you posted. I marked it up to show you what I mean. Loyd mentioned that you do not need a gap in your number 0 and number 4. The cut out numbers will be a lot stronger if you close the gap up. Also, you have a lot of open contours, which means that lines are not matching up. Refer to the JPEG that I posted, and you will see a whole bunch of red squares. All those squares are open lines. If you zoom in to those areas, you will see what I mean. This is a big factor when it comes down to machining the part out of metal, since your start and stop point is different, the contour might tab itself in, and not come out.
When it comes down to drawning parallel lines, most CAD programs has a feature called horizontal line, vertical line, and offset. These are the commands that are most useful when drawing things to cut out. They are guaranteed to be straight left and right (horizontal), and straight up and down (Vertical). Then you can offset that line to the left, right, up, or down a certain distance. Then you will have parallel lines. Another useful feature to most cad programs are something called construction lines. These are fake lines that help you draw something out, but are not real lines that a machine will cut. Mostly just reference lines, that you can insert a line on and it will snap to construction line.
Another command I like to use is the TRIM command and BREAK command. The Trim command will extend two different lines or arcs and make them join each other instead of adding a line to meet another. The less lines in a DXF, the better it cuts on a CNC. The Break command will cut up a line or arc in many different pieces. So you can draw a horizontal line across a drawing, and then break it up where you want to erase, then you will have a straight line that matches heightwise across the drawing.
I hope I did not confuse you anymore then you are now. There are wonderful people here at PlasmaSpider that will answer all of your questions if you have anymore......
Eric
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