>I may end up scoring the PCB with a a box knife and snapping it. That
>works but takes a lot of time.

If there is room to make the cut and you have access to one, a metal shear
could work.


Tom


----- Original Message -----
From: "Jeff Sampson" <jsampson@...>
To: tcrobots@yahoogroups.com
Sent: Friday, July 10, 2009 4:46:34 PM GMT -06:00 US/Canada Central
Subject: Re: [tcrobots] PC boards from China

I didn't leave enough room to do a full cut with a bandsaw or table saw
blade.

I may end up scoring the PCB with a a box knife and snapping it. That
works but takes a lot of time.

I may try the CNC router that is at Alan's house. I would need to find a
"V" shapped bit to do the cutting. Then snap that.

I have also thought about making a small table saw with a Dremel tool
and a cut off wheel. Again, cut just deep enough to get a groove and
then snap it.

I guess we could figure out how to mount a Dremel tool and cut off wheel
sideways in that CNC router table.

Jeff Sampson
http://tcrobots.org/members/jsamp.htm


Overkill wrote:
>
>
> I have a table top band saw, but the blades are terrible. its a
> craftsmen and the fiberglass just kills a blade in no time. I bought the
> saw specifically for cutting up PC boards and it hasn't worked very
> well. on top of it, it uses an odd size blade so im stuck with craftsmen
> only blades....
>
> A dremel tool has worked the best for me to cut PC boards.
>
>
>
> Dave
>
> -----Original Message-----
> *From:* tcrobots@yahoogroups.com [mailto:tcrobots@yahoogroups.com]
> *On Behalf Of *Martin, Jeff
> *Sent:* Friday, July 10, 2009 3:50 PM
> *To:* tcrobots@yahoogroups.com
> *Subject:* RE: [tcrobots] PC boards from China
>
> *Too bad you don’t have a nice scowl saw with a fine blade. A
> small table top band saw with a metal blade would also be nice.*
>
> **
>
> ------------------------------------------------------------------------
>
> *From:* tcrobots@yahoogroups.com [mailto:tcrobots@yahoogroups.com]
> *On Behalf Of *Jeff Sampson
> *Sent:* Friday, July 10, 2009 3:45 PM
> *To:* tcrobots@yahoogroups.com
> *Subject:* Re: [tcrobots] PC boards from China
>
>
>
>
> I picked up my mail today which was on hold. Both sets of boards showed
> up. Actually they arrived yesterday but I picked them up today.
>
> I ordered them on June 22 and they arrived July 9. So it took about
> 3 weeks.
>
> I have noticed two thing so far. The reset button on the XMega board is
> on the back of the board. I don't know how I screwed that up. But it is
> a through hole part and it is symetrical. So it doesn't matter which
> side it goes on. The Mega164 board has the silk screen screwed up. I
> think I switched from proportioanal fonts to vector fonts and didn't
> recheck how it looks. So it is now goofy...
>
> One board has several designs so I have to figure out a convenient way
> to cut those apart.
>
> Jeff Sampson
> http://tcrobots.org/members/jsamp.htm
> <http://tcrobots.org/members/jsamp.htm>
>
> Jeff Sampson wrote:
>> My Digikey parts showed up today. Man! those 0.5mm pitch pins on the
>> prcessor are small...
>>
>> I'm still waiting for the boards to show up.
>>
>> Jeff Sampson
>> http://tcrobots.org/members/jsamp.htm
> <http://tcrobots.org/members/jsamp.htm>
>>
>> Jeff Sampson wrote:
>>
>> >I got two emails on Monday saying that both of my PCB designs have
> been
>> >shipped.
>>
>>
>> >Now I have to wait for the boards to show up. I went ahead and
> ordered
>> >some parts from Digikey.


------------------------------------

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--
Tom Baraniak

Electronics and Lab Manager
Physics and Astronomy
Carleton College
1 N College Street
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507-649-2091 (cell)

http://people.carleton.edu/%7Etbarania/physicsshop.html
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-- What we have done for ourselves alone dies with us. What we have done for
others and the world remains and is immortal.
-- All people of action are dreamers.
-- Nothing in life is to be feared. It is only to be understood.