I have already built the relay computer and it is fully functional. Unfortunately the lower right corner got damaged during shipping. Luckily though the damage is confined to the scored/perforated edge Joe told me is meant to be broken off.
Has anyone here tried to snap this edge off after having assembled the board. I wouldn't hesitate too much on an empty board - worst case I would buy a new one, but with a fully assembled board considering the amount of work and cost of components I am very reluctant.
Thanks
Tom Hunter
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The board I got didn't have any extra edges. Depending on how big the section in question is, you can use sandpaper, file and/or a dremel grinding wheel to remove the rough edge or at least weaken it before trying to snap it. Granted this will generate some PCB fiberglass dust so take precautions like a dust mask and covering up surfaces to keep the dust from spreading.
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I recently did this... it's not bad. Assuming you board is the same as mind with the "extra" area to be removed should have already been scored top and bottom.
I just used a set of heavy duty pliers (for better leverage and control), and griped the part to be removed near (but not at) the scoring. Then I applied a LIGHT bit of pressure rotating it up and then down, starting at the top of the board. I continue to do this going down the board repeating this every 1-2 inches. You will hear a small crackle sound as the fiberglass breaks. Once I got to the bottom, I start back at the top and bent it a bit more continuing down. Eventually it broke nice and cleanly.
Last edit: Jim Bailey 2020-12-06
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Just FYI, those edges are not in the design package I send to the fab house. I think the board must be close the panel size, so they just left them on, or something.
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The left and right edges are only about 1/4" wide with what look to be registration or mounting holes on the top and bottom of each strip. So I suspect you are right about its being close to the panel size.
Lucky it's really not hard to remove if someone wants to.
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I have already built the relay computer and it is fully functional. Unfortunately the lower right corner got damaged during shipping. Luckily though the damage is confined to the scored/perforated edge Joe told me is meant to be broken off.
Has anyone here tried to snap this edge off after having assembled the board. I wouldn't hesitate too much on an empty board - worst case I would buy a new one, but with a fully assembled board considering the amount of work and cost of components I am very reluctant.
Thanks
Tom Hunter
The board I got didn't have any extra edges. Depending on how big the section in question is, you can use sandpaper, file and/or a dremel grinding wheel to remove the rough edge or at least weaken it before trying to snap it. Granted this will generate some PCB fiberglass dust so take precautions like a dust mask and covering up surfaces to keep the dust from spreading.
I recently did this... it's not bad. Assuming you board is the same as mind with the "extra" area to be removed should have already been scored top and bottom.
I just used a set of heavy duty pliers (for better leverage and control), and griped the part to be removed near (but not at) the scoring. Then I applied a LIGHT bit of pressure rotating it up and then down, starting at the top of the board. I continue to do this going down the board repeating this every 1-2 inches. You will hear a small crackle sound as the fiberglass breaks. Once I got to the bottom, I start back at the top and bent it a bit more continuing down. Eventually it broke nice and cleanly.
Last edit: Jim Bailey 2020-12-06
Just FYI, those edges are not in the design package I send to the fab house. I think the board must be close the panel size, so they just left them on, or something.
The left and right edges are only about 1/4" wide with what look to be registration or mounting holes on the top and bottom of each strip. So I suspect you are right about its being close to the panel size.
Lucky it's really not hard to remove if someone wants to.