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It took me a while to figure out the settings to cut out the traces from the copper. I used the provided .png file for the FAB ISP and started testing.
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My first try was with 2 cm/s speed and a force setting of 80. |
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There was some gouging up near the location of the zero ohm Resister solder jump. But I decided to try and use it to test the process of removing the copper from the sheet. |
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The first try was quite fruitless. |
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I thought at first the knife had not cut through at all, but found that it had. First casualty. |
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My first reaction was that the traces needed to be cut loose more effectively, so I bumped the power up to try and establish and appropriate upper bound for experimentation. |
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A Power setting of 90 was slightly extreme. |
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However, it did allow me to have some practice at removing the copper using painters tape. it was a little sloppy in part from the gouging that happened, but it was useful to go through the transfer process. |
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Not a clean pass. Second Casualty. |
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So I did a bunch of tests for power settings trying to get a board with minimal gouging. I swung back and forth between 75 and 90 and finally zeroed in on 83 as a good one. Although we did have some gouges there too.
In the end, I also remembered to check the blade, which was protruding a lil to far, so after adjusting that and the power settings, the traces cut out with the power setting of 80 and 83 were useable. |
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I also discovered an effective way to help the initial transfer process along. I used the knife to pry loose the beginning. |
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First transfer sans casualty. |
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At a loss for a substrate to transfer the copper to, I eventually just stuck it to a piece of vinyl left over from last week's assignment. |
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Practice weeding on the first casualty. |
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Finally weeded the traces cut out on the power 80 setting without tearing anything necessary off the vinyl. I would NOT reccommend using the vinyl. The copper did not really stick to it nicely. |
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Power 80 wins. |
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So, then I thought: Well, I'm probably going to screw this up by trying to solder it, but let's have a go. and it turned out to be not that hard even though there was significatnly less space between traces.
I had to use the copper braid to remove solder once on the USB connector and even used the knife to cut apart some traces that I soldered together, but
after I tried that I thought: Well, I doubt its programmable. But it was, and I managed to program it first try again. |
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Shoot, Son! |