PADS: hatch vs pour

[John Larkin]

Can anybody explain to me the difference between a copper hatch and a
copper pour in PADS? The documentation seems to use different words to
say the same thing about each one, and they look pretty much the same.

Thanks,

John

 

[William Lenz]

John Larkin

Can anybody explain to me the difference between a copper hatch and a
copper pour in PADS? The documentation seems to use different words to
say the same thing about each one, and they look pretty much the same.

Thanks,

John

Copper pour is that which exists before "copper pour" becomes "copper hatch"
).
You select a copper pour area then pour it, the result is copper hatch. When
you save and close a board that has copper hatch then open it agian you'll
see the hatch outlines. You'll have to use the Hatch command to fill them in
agian. So the user can select where they want copper pour, Pads then
generates the copper hatch. Copper hatch can then be edited or deleted. To
go back to the original copper pour after you've see the hatch results (if
you don't like it and want to change it) type "po" return.

(note use the keepouts and the net rules "copper" section to set up your
clearances and such)

Hope this explained it )

bill

 

[Mark]

On Thu, 18 Sep 2003 21:17:50 -0700, John Larkin
<jjlarkin@highlandSNIPtechTHISnologyPLEASE.com> wrote:

Can anybody explain to me the difference between a copper hatch and a
copper pour in PADS? The documentation seems to use different words to
say the same thing about each one, and they look pretty much the same.

Thanks,

John

Hatches usually are open in the middle, like the empty spaces between
lines on graph paper. Pours are usually solid areas (no open spaces).
Pours usually use the same algorithms as hatches; the line widths and
spacings are altered to leave areas either open or overlapping. For
example, 12 mil wide tracks on 10 mil centers would overlap to produce
a "solid" pour area. 10 mil tracks on 30 mil centers would produce a
hatch pattern.

Mark

 

[Simon Peacock]

and there are reasons for this.. it has been noted that some PCB
manufacturers tend to gas.. gas under solid copper bubbles.. gas under a
hatch 'farts'. Some materials are worse than others in this respect but FR4
isn't one of them.. unless the PCB manufacturer has a problem.. in which
case its usually seen by outgasing around pads & dry joints.

Simon


"Mark" <blockspam@spamblock.com> wrote in message
news:6n5nmv0a91finsn4iq6cnjenk00sn7umkp@4ax.com...

On Thu, 18 Sep 2003 21:17:50 -0700, John Larkin
jjlarkin@highlandSNIPtechTHISnologyPLEASE.com> wrote:


Can anybody explain to me the difference between a copper hatch and a
copper pour in PADS? The documentation seems to use different words to
say the same thing about each one, and they look pretty much the same.

Thanks,

John

Hatches usually are open in the middle, like the empty spaces between
lines on graph paper. Pours are usually solid areas (no open spaces).
Pours usually use the same algorithms as hatches; the line widths and
spacings are altered to leave areas either open or overlapping. For
example, 12 mil wide tracks on 10 mil centers would overlap to produce
a "solid" pour area. 10 mil tracks on 30 mil centers would produce a
hatch pattern.

Mark

 

[John Larkin]

On Thu, 18 Sep 2003 21:17:50 -0700, John Larkin
<jjlarkin@highlandSNIPtechTHISnologyPLEASE.com> wrote:

Thanks for the comments. But it still seems to me that, if you play
with the grid and line widths, you can make a pour hatch, or a hatch
pour.

Oh well... we'll just use pours and pretend that "hatch" doesn't
exist.

John

 

[Simon Peacock]

so... let me guess... you've never heard of short cuts ???????

Simon


"John Larkin" <jjlarkin@highlandSNIPtechTHISnologyPLEASE.com> wrote in
message news:s77pmvsq3vgakjvn877938fh7dskoui25e@4ax.com...

On Thu, 18 Sep 2003 21:17:50 -0700, John Larkin
jjlarkin@highlandSNIPtechTHISnologyPLEASE.com> wrote:

Thanks for the comments. But it still seems to me that, if you play
with the grid and line widths, you can make a pour hatch, or a hatch
pour.

Oh well... we'll just use pours and pretend that "hatch" doesn't
exist.

John