Hole Schedules and Excellon drill with non-plated holes

On 21/01/2014 7:33 p.m., Jack Gratteau wrote:

My design has multiple instances of a hole dia as both plated and

non-plated holes.

 

The schedule table shows the items and quantity for each, but uses the

same symbol for both of them. It should have different symbols.

The symbols are for the drill diameter. Same diameter, same symbol.

 

This then carries into the Excellon outputs, and it lumps all the xy

coord for plated and non-plated drills into one tool. It should have

separate tools and there should be means to generate separate drill

files for plated and non-plated holes.

I suggest this is not needed. The board houses have rules that take care

of that for you.

You need to design in your chosen CAD product with an understanding of

the manufacturing process. There is only one excellon (drill) file

provided to the board house and yet they can deliver what you want with

no other conversation if you design your board to their rules.

For example check out Eurocircuits design-guideline document, section on

Holes, for an understanding. PCB-Pool quotes something similar

http://www.eurocircuits.com/images/stories/ec13/ec-design-guidelines.pdf

The right combination of hole and copper or no copper will attain a PTH

or non-PTH hole as required.

HTH

Warren

 

Any solutions would be appreciated.

 

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Am 21.01.2014 07:33, schrieb Jack Gratteau:

My design has multiple instances of a hole dia as both plated and

non-plated holes.

 

The schedule table shows the items and quantity for each, but uses the

same symbol for both of them. It should have different symbols.

 

This then carries into the Excellon outputs, and it lumps all the xy

coord for plated and non-plated drills into one tool. It should have

separate tools and there should be means to generate separate drill

files for plated and non-plated holes.

 

Any solutions would be appreciated.

 

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To view any images and attachments in this post, visit:

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As Warren already wrote: The symbols represent the drill diameter...

EAGLE knows "drills" as they are used in pads and vias (plated) and

holes placed with the HOLE command (non-plated). If you prefer to have

two separate drill files, you could use the CAM Processor and let it

create an Excellon file for the Drills layer and one file for the

Holes layer.

In general the board manufacturer decides about plated or non-plated:

That's very simply. If a drilling is surrounded by copper it is

possible to make it plated. If it is not in an copper area, it is

simply impossible to make it plated.

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Mit freundlichen Gruessen / Best regards

Richard Hammerl

  CadSoft Support -- hotline@cadsoft.de

  FAQ: http://www.cadsoft.de/training/faq/

On 21/01/14 08:25, warrenbrayshaw wrote:

On 21/01/2014 7:33 p.m., Jack Gratteau wrote:

My design has multiple instances of a hole dia as both plated and

non-plated holes.

 

... snip ...

 

You need to design in your chosen CAD product with an understanding of

the manufacturing process.

On which point I would note that some board houses explicitly request

that you don't do that. You tell them which drill codes (=sizes) are PTH

and which are non-PTH, you can't define it on a per-hole basis.

On 22/01/2014 7:02 a.m., Rob Pearce wrote:

On 21/01/14 08:25, warrenbrayshaw wrote:

On 21/01/2014 7:33 p.m., Jack Gratteau wrote:

My design has multiple instances of a hole dia as both plated and

non-plated holes.

 

... snip ...

 

You need to design in your chosen CAD product with an understanding of

the manufacturing process.

 

On which point I would note that some board houses explicitly request

that you don't do that. You tell them which drill codes (=sizes) are PTH

and which are non-PTH, you can't define it on a per-hole basis.

 

All good information. I wonder, how those board house handle the board

of the OP where there are the same sized hole, some PTH and others not.

As always, cater to the requirements of the board house.

Regards

Warren