Wow, this thread was *waaaay* down on the third page when I went searching for it.

Just wanted to let everyone know that my mask generator has been updated.

Here's a list of the changes:

Moved to new hosting provider.
Complete rewrite of mask generation code.
SVG opens fine in Corel Draw 12 (and, I think Corel Draw X4) now.
SVG now converts to DXF cleanly in Inkscape. You should be able to take the resulting .DXF directly to a machine shop/laser cutter/etc.
Split the existing generator page up into 4 pages (Overview, Generator, FAQ, and Change History) to make them more manageable.
Segregated parameter entry so it's not so overwhelming - broke it into Basic parameters, Advanced parameters, and Print options.
Entry validation added.
Appropriate parameters will accept numbers with decimal points.
Added an option to make the center of the left-hand side a bar instead of a slot.
Added an override for the slot width.
Added an option to scale the SVG to 72DPI for use with Adobe Illustrator.
Cleaned up the text a bit - now consistently use "slot" to mean an opening in the mask and "bar" to mean a solid bit.

Oh, and I've changed my position on printing from the browser - don't do it - the larger the mask, the farther "off" it was.

Please, please, please let me know if you have any problems with the update.

The new FAQ page is pretty barren, but I'm working on it.

Other things I'm either thinking about adding in the future and/or working on include:

Presets for various scopes
Direct output to .DXF
Color pickers
A Silverlight version that will display the mask and update in real time.
Ability to upload an existing SVG to tweak it.

Let me know if you have any great ideas for the generator.

David