How to shape eagle pcb outline

I have a similar question.  I have already built the complete board (no schematic) and everything is perfect from a sizing perspective.  I thought things were all in 1MM increments on the grid but it ends up being in 10MM increments.  How do I either directly reduce the complete BRD file by 90% (board sizes now 25in x 12.5in and it actually should be 2.5in x 1.25).  If not able to do it in the software, after I input the Gerbers can I make a change to the Gerber file that will downsize all by 90%?

Thx in advance.

On 14/02/2014 1:10 p.m., Glenn Hart wrote:

I have a similar question.  I have already built the complete board (no

schematic) and everything is perfect from a sizing perspective.  I

thought things were all in 1MM increments on the grid but it ends up

being in 10MM increments.  How do I either directly reduce the complete

BRD file by 90% (board sizes now 25in x 12.5in and it actually should be

2.5in x 1.25).  If not able to do it in the software, after I input the

Gerbers can I make a change to the Gerber file that will downsize all by

90%?

 

Thx in advance.

Hi Glen

I have had a look at your board and it is large.

I will attach a ULP that will redraw the board 1/10 the current size. On

top of the current board. you can then delete the original. So i suggest

making a copy first. You can use EDIT > UNDO/REDO LIST to get rid of

every thing the ULP creates if you run it and then change your mind.

It scales the dimensions and text size but not the track or via sizes

  You will need to move the text as that does not scale well. The text

is now vector font that way the manufacturer will make what you see.

I feel the need to say that there is quite a lot that worries me about

your board. You may care to check some of the following points.

I assume this unit is used on a road truck/trailer.

The relay drills seem very small at 0.5mm. A spec sheet for what i feel

is a similar relay calls for 1.3mm

While I don't know the intended functionality of the relays (I assume

there are three side by side) all the combinations of connectivity for

flashers and tail lights day or night does not make sense to me. Right

seems OK but left does not do anything.

The tracks seem small. Its a vibration environment and the lamps draw

quite some current so get them larger where you can. You did set large

sizes in the Net Class but they are not used when manual routing so they

are smaller than listed there and they are much to large anyway.

This PCB could easily be made single sided with the tracks and screen

print on the bottom  and components on the top.

The LED is across the power rails so unless it is a 12volt one (assuming

a vehicle) it will need a current limiting resistor in series. The LED

needs its hole and trace sizes reviewed.

The board outline is on layer 1. That's fine but normally it should be a

zero width line on layer 20. Currently the way it is the manufacturer

will cut down the middle of that line leaving a thin copper edge on the

board. So long as the outline is on one of the gerber layers you should

be fine.

So you have some work to do - all the best

Warren

On 14/02/2014 1:10 p.m., Glenn Hart wrote:

I have a similar question.  I have already built the complete board (no

schematic) and everything is perfect from a sizing perspective.  I

thought things were all in 1MM increments on the grid but it ends up

being in 10MM increments.  How do I either directly reduce the complete

BRD file by 90% (board sizes now 25in x 12.5in and it actually should be

2.5in x 1.25).  If not able to do it in the software, after I input the

Gerbers can I make a change to the Gerber file that will downsize all by

90%?

 

Thx in advance.

Hi Glen

I have had a look at your board and it is large.

I will attach a ULP that will redraw the board 1/10 the current size. On

top of the current board. you can then delete the original. So i suggest

making a copy first. You can use EDIT > UNDO/REDO LIST to get rid of

every thing the ULP creates if you run it and then change your mind.

It scales the dimensions and text size but not the track or via sizes

  You will need to move the text as that does not scale well. The text

is now vector font that way the manufacturer will make what you see.

I feel the need to say that there is quite a lot that worries me about

your board. You may care to check some of the following points.

I assume this unit is used on a road truck/trailer.

The relay drills seem very small at 0.5mm. A spec sheet for what i feel

is a similar relay calls for 1.3mm

While I don't know the intended functionality of the relays (I assume

there are three side by side) all the combinations of connectivity for

flashers and tail lights day or night does not make sense to me. Right

seems OK but left does not do anything.

The tracks seem small. Its a vibration environment and the lamps draw

quite some current so get them larger where you can. You did set large

sizes in the Net Class but they are not used when manual routing so they

are smaller than listed there and they are much to large anyway.

This PCB could easily be made single sided with the tracks and screen

print on the bottom  and components on the top.

The LED is across the power rails so unless it is a 12volt one (assuming

a vehicle) it will need a current limiting resistor in series. The LED

needs its hole and trace sizes reviewed.

The board outline is on layer 1. That's fine but normally it should be a

zero width line on layer 20. Currently the way it is the manufacturer

will cut down the middle of that line leaving a thin copper edge on the

board. So long as the outline is on one of the gerber layers you should

be fine.

So you have some work to do - all the best

Warren

Thanks for the ULP (I think that would be worth posting to the download site) and all the comments/suggestions that both of you had.  I will verify my numbers on the drills to ensure they will support the relays.  As you noted I could put all the tracks on one side but decided not toas  to make it easier to solder and there was no reason not to separate (I am not an ee and this is my 1st board so if there is a reason I would be amenable to hearing it from a pro).  On your LED comment about getting them larger are you talking about the internals of the LED to allow for better support since as you noted there will be vibration involved since being used on a truck.

Totally different question: given this is using 3 relays and with all the costing factors involved will cost me about $4/US to make in quantity: is there a programmable chip that can accept four lines (three power and a ground) and output a power line (all 12V DC) that from a cost stand point and reliability (temps: -10C to 40C) can even come close to the above $4/US?

Again Thanks!!