How to draw a filled, rounded rectangle in Eagle

[Anonymous]

My task sounds quite simple: draw a filled square of 0.25 mm with rounded corners (where r = 0.05 mm) to denote solder paste (i.e. on layer tCream).

Unfortunately, I haven't figured it out yet how to do this easily. I'd tried

• using rectangle but its roundness is not adjustable.
• using circle but its straight is not adjustable.
• using polygon with miter, radius equal to my desired size, and L or S shaped wire bend but micro-adjusting all of its 8 line segments to their exact places is extremely inconvenient since as you move just one segment, the whole polygon blows up. But, at least, I know how to draw spaceship Enterprise.
• creating straight-edged polygon and then using the Split command on their lines. This way the split command result is barely visible and prone to error since I operate with mouse.

What do you think is the easiest way to create a rectangle with rounded corners?

Just to be easier to imagine, I have to draw the red squares:

[Anonymous]

I think I've started figuring out a possible solution but feel free share anything you think is easier.

1. Adjust the grid size to the required roundness (in my case it's 0.05 mm).
2. Create polygon with straight (I-shaped) wire bend, 0 width, straight corners, 0 radius in a shape which roughly follows the desired rectangle shape. Place it around the object not to have to move it around later.
   In corners create a 45° cutoff with one polygon-segment where its both ends cut in the amount of radius (in my case it was 0.05 mm). Follow the actual coordinates in the upper status bar while placing down the corner segment.
   An example of this:
   
   
   
   
   
   
   
   
   
   
3. If necessary, resize it to you liking but be sure to keep the 0.05-0.05 mm empty triangle in the corners.
4. Shift+click on all four corner segments and in the Inspector enter the Curve value of -90°. The result will be:
   
   
   
   
   
   
   
   

If you have any additional ideas how to create it quicker, please let me know.

[one-of-the-robs]

If you're using a polygon, there's a rounded-corner bend style that should allow you to draw it straight off. You may need to right-click to get each bend the right way before placing vertices.

[rachaelATWH4]

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@one-of-the-robs wrote:

If you're using a polygon, there's a rounded-corner bend style that should allow you to draw it straight off. You may need to right-click to get each bend the right way before placing vertices.

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Either this or draw it as a plain rectangular polygon of the right size and then do MITER <miter size> then click each of the 4 corners to insert the miters. This is probably less fiddly than getting the auto-bend to go in the direction you want.

Best Regards,

Rachael