How can I make a large 0.900 in (23mm) pad diameter for a wirepad?

THANKS SO MUCH!!

In the attached graphic you will see the work around. A polygon can be used but not arcs or circles (strangely enough!).

So thanks again both of you, really appreciate having a new library item for my large pad!

Tim

THanks very much for all your help.

I'm using EAGLE Version 5.6.0 for Windows and I'd like to have a library part

for a wirepad that is larger than .5 inch. I'll try Pauls technique with the stop mask,

maybe that is my problem. Thanks again!

Tim Economu schrieb:

a), I really have absolutely no idea what you mean. I have been using

Eagle for maybe 6 or 7 years now, and really never needed much

support until now.

You are posting via element14, which is just a web based gateway to the

newsgroups, where the discussions originate. Sadly, this gateway doesn't

work correct, so any image you are posting there does not appear at the

newsgroups. There is another web gateway at eaglecentral.ca, which works

significantly better. The majority of posters uses the newsgroups or

that other gateway, so your image is visible only for a small part of

the users.

I recommend having a look at direct newsgroup access (with a decent

newsreader) or at the webgate at eaglecentral.ca.

b) I am asking about how to build a pad larger than the Eagle default

of 1/2 inch. That is (as far as I know) only possible in the library.

As I said I tryed using two arcs to define a larger pad, on top of

the existing .5 inch pad, and as the image shows, the copper polygon

pour will not connect to the new copper pad. If I delete the "new"

larger pad made of arcs, the existing .5 in pad 'will' connect to the

pour.

As Paul already asked: maybe you are working with an older version of

EAGLE? Then you should create your larger "pad" directly within the

board. Even if it's part of some package definition - you can put the

hole and the stop masks in the package, then add the required copper

directly in the board using a polygon (and/or two ARCs of proper width,

if you need copper up to the hole for plating-through).

Tilmann

On 08/31/2011 07:17 PM, Tim Economu wrote:

Thanks again for the help Tilmann,

About your answers,

a), I really have absolutely no idea what you mean. I have been using Eagle for maybe 6 or 7 years now, and really never needed much support until now.

b) I am asking about how to build a pad larger than the Eagle default of 1/2 inch. That is (as far as I know) only possible in the library.  As I said I tryed using two arcs to define a larger pad, on top of the existing .5 inch pad, and as the image shows, the copper polygon pour will not connect to the new copper pad. If I delete the "new" larger pad made of arcs, the existing .5 in pad 'will' connect to the pour.

 

I find it hard to believe there is no easy way to get a larger than 0.5 inch wirepad in Eagle!!

 

Thanks,

Tim

 

Eagle version???

with 4.1x you can't really add copper to lib's. With 5.+ I think you can

but I never upgraded.

With eagle 5.+ in the lib make a square polygon and then round with the

miter tool.

With 4.1x fix the stop mask to the larger size then use a named polygon

on the board.

Paul R.

Thanks again for the help Tilmann,

About your answers,

a), I really have absolutely no idea what you mean. I have been using Eagle for maybe 6 or 7 years now, and really never needed much support until now.

b) I am asking about how to build a pad larger than the Eagle default of 1/2 inch. That is (as far as I know) only possible in the library.  As I said I tryed using two arcs to define a larger pad, on top of the existing .5 inch pad, and as the image shows, the copper polygon pour will not connect to the new copper pad. If I delete the "new" larger pad made of arcs, the existing .5 in pad 'will' connect to the pour.

I find it hard to believe there is no easy way to get a larger than 0.5 inch wirepad in Eagle!!

Thanks,

Tim

Tim Economu schrieb:

Thanks Tilman, I tried your method, in the library editor, I made

two 180 degree arcs on the top copper layer overlapping the pad on

the pad layer. Trying to put a copper polygon pour of the same net

name in board layout unfortunately  Image:padnotconnectedtopour.JPG

does not connect the new copper arc pads to the top copper polygon.

a) If you put images in that badly broken webgate, they never appear in

the original newsgroups or in the other (significantly better working)

webgate.

b) You didn't mention before that you want to do this within a library

(i.e. package). The method I described is fine directly in the board. In

a package, you better draw a round-appearing polygon (outlines also

built with two ARCs). It will be "merged" with an SMD pad inside (that

you need for defining the connections).

Tilmann

Thanks Tilman,

I tried your method, in the library editor, I made two 180 degree arcs on the top copper layer overlapping the pad on the pad layer.

Trying to put a copper polygon pour of the same net name in board layout unfortunately does not connect the new copper arc pads to the top copper polygon.

I can connect with a trace of course, and simulate a thermal on the pour by hand, but I would like the new pad to look just like a regular pad and connnect to the pour with thermals or without thermals, either way would be fine.

Tim Economu schrieb:

I  am trying make a large pad diameter of 0.900 inches, and maximum

pad  dia. allowed in Eagle is only 0.51 inches. Is there a work

around, or  another way to get a large pad size?

 

I tried making a circle on the same layer as the maximum allowed pad

(Pads) that overlapped the pad, but that did not work: It would not

connect to a copper pour polygon of the same net name.

Don't draw into the PADS layer, draw into the copper layer(s).

Then, a circle cannot be assigned to a signal - but ARCs can, simply use

two arcs of (say) 180° each.

Tilmann