Drill Sizes

analog wrote on Wed, 16 December 2009 12:06

and made unfounded assumptions about my attitude.

Try not complaining, instead ask why with a open mind.  Deciding something

is "ridiculous" and "nutso" before getting all the reasons behind it is a

unproductive attitude and will annoy those you seek help from.

In any case, complaining to fellow users is pointless since there is

nothing we can do about it even if we did agree with you.

-

I just tried a experiment in Eagle.  I did a CHANGE DRILL to see the list

of sizes that I think you are so offended by because they were listed with

lots of digits.  Then I did SET and went to the DRILL tab and defined a

custom size like 20mil.  That showed up in the list as ".02" as expected.

However, when I went back to CHANGE DRILL, this size didn't appear in the

list.  I thought that's what the SET drill-tab was for, but apparently

there's more to it than that.

Whether that's a bug, or more likely, my misconception due to not having

read the help on the subject, I don't think it's a problem either way.  I

wasn't even aware of the many decimal places since there is very little

reason to ever do a CHANGE DRILL and then pick a size from the drop down

menu.  Drill sizes for thru hole pads belong in the libraries.  Drill sizes

for vias  should come from the net class with some input from the DRC

settings.

There are only two cases I can think of right now where you'd enter a drill

size manually.  One is when you're manually routing.  Eagle doesn't seem to

default the drill size from the net class as perhaps it should.  Second is

if your board needs other holes, like for mounting.  In both those cases

I've always just typed "cha drill xxx".  You know the size you want, so

it's quicker and easier to just enter it than fumble around in a dialog

looking for it or something close.

--

Browser access to CadSoft Support Forums at http://www.eaglecentral.ca

analog wrote on Wed, 16 December 2009 12:06

and made unfounded assumptions about my attitude.

Try not complaining, instead ask why with a open mind.  Deciding something

is "ridiculous" and "nutso" before getting all the reasons behind it is a

unproductive attitude and will annoy those you seek help from.

In any case, complaining to fellow users is pointless since there is

nothing we can do about it even if we did agree with you.

-

I just tried a experiment in Eagle.  I did a CHANGE DRILL to see the list

of sizes that I think you are so offended by because they were listed with

lots of digits.  Then I did SET and went to the DRILL tab and defined a

custom size like 20mil.  That showed up in the list as ".02" as expected.

However, when I went back to CHANGE DRILL, this size didn't appear in the

list.  I thought that's what the SET drill-tab was for, but apparently

there's more to it than that.

Whether that's a bug, or more likely, my misconception due to not having

read the help on the subject, I don't think it's a problem either way.  I

wasn't even aware of the many decimal places since there is very little

reason to ever do a CHANGE DRILL and then pick a size from the drop down

menu.  Drill sizes for thru hole pads belong in the libraries.  Drill sizes

for vias  should come from the net class with some input from the DRC

settings.

There are only two cases I can think of right now where you'd enter a drill

size manually.  One is when you're manually routing.  Eagle doesn't seem to

default the drill size from the net class as perhaps it should.  Second is

if your board needs other holes, like for mounting.  In both those cases

I've always just typed "cha drill xxx".  You know the size you want, so

it's quicker and easier to just enter it than fumble around in a dialog

looking for it or something close.

--

Browser access to CadSoft Support Forums at http://www.eaglecentral.ca