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08-02-2010 #1
I think Peter has beaten me too it but I was going to suggest using a thinner piece of steel, I dont know much about magnets but maybe a lower mass is required, as I said before the hot rails type of pick up use two thin strips, maybe this isnt a coincedence
Maybe you can create a sandwich of plastic and steel to make up the 3mm width?
Why do you need a blade anyway? is it cosmetic or are there dead spots between the poles?
Anyway good luck
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09-02-2010 #2
Magnetism....it's well esoteric! (likewise Ross, I actually know very little about the science of magnetism...hence the trial & error aspect of making a good driver is my only option! I did find one magnetism forum, but didn't get much help there!)
OK, at the risk of straying well off all things CNC/Metalworking etc, for those that might not know, a guitar pickup typically has 'slugs' (mild steel 'cylinders') directly underneath each string with a ceramic magnet attached to the bottom. My (good) sustainer, emulates such a setup...the magnetism travels from the magnet attached to the bottom of the slug through the 'slug' & makes an appearance at the top (I don't yet have a gauss meter to measure the strength, but intend making my own gaussmeter with a PIC & a hall effect transistor soon).
The problem with a 'slug' design of sustainer is that a lot of guitars have different string spacings ....so for all this style performs well, if selling these eventually it's going to be a complete hassle establishing the guitar's string spacing & then having to make a custom bobbin to suit. (& Ross, since you ask....sting fade is not a problem when the string is bent between 'slugs')
The reason for wanting to now pursue a blade design is that it circumvents having to worry about the string spacing!
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09-02-2010 #3
Only a suggestion, but how about glueing a load of 1/8" x 1/16" iron bars side by side and then cutting the part as slices off that. A sort of large format zebra strip.
The strings might not line up with any particular bar, but they will line up with some of them :naughty:
Edit: Typo :whistling:
Edit: So why isn't it showing the post as edited
Edit: How many goes do I get? Need answers.
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10-02-2010 #4
Robin - it only shows as edited if it has been viewed before you changed it... back on topic now...
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