What you will need:
A Rotary tool ( Dremel )
A Pack of Cut-off Disks
A key Blank (..Of your choice )
A cold drink Wink
First step, ( whatever that's in red, means it needs to be cut )
Take your original key, and mark where the cuts are like in this picture.
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Next,
Cut a " line " of about 1-2mm thick down where the marks of the cuts from the original key are like so,
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This is what it would be supposed to look like after the cuts are made,
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Now,
Cut a straight line thru all the peaks, try to make the line in the middle of the peaks like this,
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This is what it is going to look like after the cuts are made,
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Next,
Cut diagonal lines on the peaks like so..
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Do this on the other side of the peak also..
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This is what it should look like after the cuts have been made to the peaks, the bumpkey is almost finished.
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Now you wanna be carful here. You need to remove a little bit of metal on the head, and a little bit of metal on the shoulder. I find that taking off 5mm on the shoulder works, and 0.2-0.3mm on the head works ok, but this could work better your own way, this is just my way Wink
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Here's the final result on the key..
