The scanner's name escapes me as well. The company I worked with
purchased one of the scanners. However, I do know that they have long
since gone out of business.
Good luck,
Gary Ferrari
Wayne Thayer wrote:
> There used to be a vendor who sold a scanner based system for this, and had all of the utilities for turning the images back to photoplots. The name presently escapes me. I have used the photographic technique too. Pretty painful, and hard to get right: It is exceedingly easy to miss a via. You'd think backlighting would help, but any thickness to the board and you are out of boresite--could really use a linescan camera.
>
> Remember that once you have pictures, turning them into Gerber files can also be painful since this is a raster to vector conversion.
>
> Good Luck!
>
> Wayne Thayer
>
> ________________________________
>
> From: TechNet on behalf of Dave Seymour
> Sent: Wed 8/8/2007 2:48 PM
> To: [log in to unmask]
> Subject: Re: [TN] reverse engineering, legit style
>
>
>
> There maybe a vendor logo/ mark on the PCB.
> Then track down the vendor to see if the vendor still exists.
> Who knows. Maybe artwork will pop out of the archive.
>
> dave
>
>
> Brooks,Bill wrote:
>
>> I have reverse engineered boards too, and the 'layer peal away' method works
>> pretty well if you are careful. A vertical end mill or possibly abrasive
>> removal might work. John's method sounds like a very good solution.
>>
>> However you will destroy the original. Sometimes you only have one copy of
>> the board and want to preserve it... then what?
>>
>> It was suggested to me that you could send the board to a local board shop
>> and have them generate a net list by probing all the points on the board.
>> Having a netlist would help a lot... maybe even if you wanted to recreate a
>> schematic to go with the board design...
>>
>> X-ray might be useful additionally in seeing the internal layer structures
>> but seeing the details can be difficult to do thru a lot of layers...
>>
>> Just a thought... I wonder if heating it to a level that delamination occurs
>> would help in stripping off the layers or not... probably would make a mess
>> of it though... hard to say, never tried it.
>>
>> Before going through that though, I would do an exhaustive search for the
>> original artwork, in house, and at previous vendors that made the board for
>> us to see if I could obtain images of the layers that way.
>>
>>
>> Good luck.
>>
>> Bill
>>
>>
>> -----Original Message-----
>> From: John Burke [mailto:[log in to unmask]]
>> Sent: Wednesday, August 08, 2007 10:33 AM
>> To: [log in to unmask]
>> Subject: Re: [TN] reverse engineering, legit style
>>
>> Jeff.
>>
>> I had to do this once and for the record here is how I did (and still would)
>> do it.
>>
>> Take a camera and fix it in a stand looking vertically down at the base. On
>> the base you have tooling pins for your board.
>>
>> Place board on the tooling pins and take a picture.
>>
>> Remove board and using a standard sectioning equipment remove the solder
>> resist down to the copper layer 1 - take another photo. Grind down to copper
>> layer 2 - take another photo.
>>
>> You will end up with all 12 layers, effectively "pin registered" that you
>> can scale from the original board size and re-create using a CAD system.
>>
>> Have fun
>>
>>
>>
>> John Burke
>>
>> (408) 515 4992
>>
>> -----Original Message-----
>> From: TechNet [mailto:[log in to unmask]] On Behalf Of Jeff Seeger
>> Sent: Wednesday, August 08, 2007 9:02 AM
>> To: [log in to unmask]
>> Subject: [TN] reverse engineering, legit style
>>
>> ,
>> Hallooo, Technet -
>>
>> I've been handed an unusual request, to try and duplicate a PWB
>> from >10 years ago for a resupply type of contract. The OE has
>> officially declined participation and releases to that effect
>> have been obtained. Parts have largely been identified and are
>> mostly sourced.
>>
>> My question is, what manner of tool stands a chance of imaging
>> internal layers? XRay Laminography? A chance to stay in photo
>> methods would sure help keep costs down.
>>
>> Board is reasonably small, 2x5 or so, and thankfully not jammed
>> or superbly advanced for its era. Layer count is at least 6,
>> which would seem appropriate for what I see. However there is
>> one scary marking of 12L off to one corner.
>>
>> If by chance a vendor with expertise happens to be in earshot,
>> I'd love a call.
>>
>> Thanks in advance - one more thing to try and sort out before
>> vacation next week (ain't that the way)!
>>
>>
>>
>
> --
> Dave Seymour, CID+
> Catapult Communications Inc.
> 800 Perimeter Park Dr, Suite A
> Morrisville, NC 27560
>
> Direct: (919)653-4249
> Main: (919)653-4180
> Fax: (919)653-4297
>
> [log in to unmask]
>
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