HPGL Generator - 2 hole flange

Plate width
Plate height
Hole diameter
Horizontal hole offset
Vertical hole offset
Horizontal repeat
Vertical repeat
Cutter kerf offset
Spacing for multiples
Detail auto-zoom %
- usually 1021 for plotters

HPGL output:

1000 steps per inch


Detail - approx. zoom = 166.25%

picture 1

Bed Layout - 120" x 48"

picture 2

Hand-coding HPGL is boring. Unless you want to pay big bucks for buggy commercial software, you're left with drawing in Corel (or something even more painful) and then tweaking the output with a text editor. Not exactly a day at the beach.

This is a tool for generating HPGL files for cutting metal on my groovy homemade plasma cutter. I've set it for a resolution of 1000 steps per inch to make it easier to tell where I am in a file.

Lead-ins are automatically generated from the center of each hole and 100 steps outside the rectangle. The funny-looking dotted lines are just the torch path when it's not cutting. The first move is the red one. If the kerf offset is big enough, you may be able to see that a red line indicates the cutting path, while a black line indicates the finished piece.

If you put in stupid dimensions, you will get stupid results. I am not responsible for any problems with this or anything else. Actually, I'm just plain not responsible.

Just copy and paste the code from the text box into a file and give it a .plt extension, and you're good to go!

This project was written using the extremely useful and free open-source tools PHP and GD and served up with Apache. If you use this and like it, please let me know.

© 2003 Hal Eckhart