About changing drillsize and not changing the lib

On Thu, 9 Apr 2009 10:10:32 +0200, "Peter Andersen"

<noname@noadress.com> wrote:

Hi

 

I am etching a lot of PCB's my self and using 0,5mm drill for all drillholes

in Eagle. When I drill the hole on the final printboard I use the correct

dillsize according to each component. The reason for this is that it's very

easy to center the dill on the board when I'm using a 0.5mm hole on the

board, otherwise often the dill will be in the edge of the hole and not 100%

in the middel.

 

The problem is now: I have changed the drillsize on a lot of components in

my database to 0.5mm but if I want the have a PCB made by Olimex I can't

have 0.5mm drillsize on all the holes. At least that will be the problem if

I sent out the brd file directly to Olimex.

 

But how can I come around this? I will change the drill size in my database

back to the correct size on each component, but I would still like to be

able to make my homemade boards with 0.5mm hole when I do a kitchen table

etching and drilling.

 

Is it possible to make a gerber or similar file (I dont know anything about

gerber!) that could change the drillsize from the correct size and to my

0.5mm so I can print the board layout on my laserprinter and still preserve

the correct dillsize in Eagle?

Do you want to change just the drill size?  Or do you want to change

the pad size too?  If it is only the drill size, then put the correct

drill sizes in Eagle.  Then run the CAM Processor Job, excellon, which

will make the drill file, *.drd.  This file is just an ordinary text

file.  You can edit it with any text editor.  So edit it and simple

change the drill sizes to 0.5mm, or whatever.  You only need to change

it for each different drill size, because the drill file has already

grouped all the holes according to drill size and given each drill

size a "T" number.  Once you chance the drill size of a given "T"

number, it will apply to all holes that are grouped in the same "T"

group.

Robert Scott

Real-Time Specialties

Ypsilanti, Michigan

Robert Scott wrote:

On Thu, 9 Apr 2009 10:10:32 +0200, "Peter Andersen"

<noname@noadress.com> wrote:

 

Hi

 

I am etching a lot of PCB's my self and using 0,5mm drill for all

drillholes in Eagle. When I drill the hole on the final printboard I

use the correct dillsize according to each component. The reason for

this is that it's very easy to center the dill on the board when I'm

using a 0.5mm hole on the board, otherwise often the dill will be in

the edge of the hole and not 100% in the middel.

 

The problem is now: I have changed the drillsize on a lot of

components in my database to 0.5mm but if I want the have a PCB made

by Olimex I can't have 0.5mm drillsize on all the holes. At least

that will be the problem if I sent out the brd file directly to

Olimex.

 

But how can I come around this? I will change the drill size in my

database back to the correct size on each component, but I would

still like to be able to make my homemade boards with 0.5mm hole

when I do a kitchen table etching and drilling.

 

Is it possible to make a gerber or similar file (I dont know

anything about gerber!) that could change the drillsize from the

correct size and to my

0.5mm so I can print the board layout on my laserprinter and still

preserve the correct dillsize in Eagle?

 

Do you want to change just the drill size?  Or do you want to change

the pad size too?  If it is only the drill size, then put the correct

drill sizes in Eagle.  Then run the CAM Processor Job, excellon, which

will make the drill file, *.drd.  This file is just an ordinary text

file.  You can edit it with any text editor.  So edit it and simple

change the drill sizes to 0.5mm, or whatever.  You only need to change

it for each different drill size, because the drill file has already

grouped all the holes according to drill size and given each drill

size a "T" number.  Once you chance the drill size of a given "T"

number, it will apply to all holes that are grouped in the same "T"

group.

It is only the drill size i want to change. The padsize is fixed.

But yes, that could work! but what can I then use to print out the excellon

file with drill file on my laserprinter?

Peter

Peter Andersen schreef:

Robert Scott wrote:

On Thu, 9 Apr 2009 10:10:32 +0200, "Peter Andersen"

<noname@noadress.com> wrote:

 

Hi

 

I am etching a lot of PCB's my self and using 0,5mm drill for all

drillholes in Eagle. When I drill the hole on the final printboard I

use the correct dillsize according to each component. The reason for

this is that it's very easy to center the dill on the board when I'm

using a 0.5mm hole on the board, otherwise often the dill will be in

the edge of the hole and not 100% in the middel.

 

The problem is now: I have changed the drillsize on a lot of

components in my database to 0.5mm but if I want the have a PCB made

by Olimex I can't have 0.5mm drillsize on all the holes. At least

that will be the problem if I sent out the brd file directly to

Olimex.

 

But how can I come around this? I will change the drill size in my

database back to the correct size on each component, but I would

still like to be able to make my homemade boards with 0.5mm hole

when I do a kitchen table etching and drilling.

 

Is it possible to make a gerber or similar file (I dont know

anything about gerber!) that could change the drillsize from the

correct size and to my

0.5mm so I can print the board layout on my laserprinter and still

preserve the correct dillsize in Eagle?

Do you want to change just the drill size?  Or do you want to change

the pad size too?  If it is only the drill size, then put the correct

drill sizes in Eagle.  Then run the CAM Processor Job, excellon, which

will make the drill file, *.drd.  This file is just an ordinary text

file.  You can edit it with any text editor.  So edit it and simple

change the drill sizes to 0.5mm, or whatever.  You only need to change

it for each different drill size, because the drill file has already

grouped all the holes according to drill size and given each drill

size a "T" number.  Once you chance the drill size of a given "T"

number, it will apply to all holes that are grouped in the same "T"

group.

 

It is only the drill size i want to change. The padsize is fixed.

 

But yes, that could work! but what can I then use to print out the excellon

file with drill file on my laserprinter?

 

Peter

 

 

Hello Peter,

There is a ULP made for this.

You can design your lib parts with the correct drill diameter and layout

your board. When you're finished run 'drill-aid.ulp'. It creates a new

layer (116) with 'pads' overlapping the real pads, having a hole with a

size that you can select. (ie. 0,5mm). When you print your board select

this layer as an extra, if you make gerbers (or send your .BRD file)

just leave it out.

Regards,

Richard

Hello Peter,

 

There is a ULP made for this.

 

You can design your lib parts with the correct drill diameter and

layout your board. When you're finished run 'drill-aid.ulp'. It

creates a new layer (116) with 'pads' overlapping the real pads,

having a hole with a size that you can select. (ie. 0,5mm). When you

print your board select this layer as an extra, if you make gerbers

(or send your .BRD file) just leave it out.

 

Regards,

 

Richard

Thank you SO MUCH for that! I have asked a lot of people about this problem

and also posted on a eagle NG a couple of times - with no luck at all.

You've just made my day!! ;.))) great!!

Thank you so much - I just love that kind of things with Eagle

Peter