03-16-2015, 07:18 PM
Hi Lads , well my magnetic DTI's had a problem, the magnetic field was leeching into the workings as when i have come to use the DTI's they were not returning properly as they had been when I tested them after making them.
So phase two was needed, the plan to space the magnets away from the DTI's with a plastic bar spacer.
Not sure what type of plastic is is but stinks when turned in the lathe.
Recessed the bottom for the magnets to sit in which turned out to be mistake in the end.
To get one of the magnets off the rear of the DTI I had to heat it slightly with pencil flame, I found out this spoils the magnet ( turns it into metal disc not magnet lol ) so after glueing the magnets in found one no longer was a magnet and the other was not sitting dead square so although it stuck, it would pivot on the most raised part.
I am starting to get bored with this project now so tried sticking another magnet ontop of the dead magnet and it worked, then tested a second magnet ontop of the still magnetic magnet on the other DTI and it was again effecting the DTI so heated the glued magnet to kill it , then glued new magnet ontop and they both eventually work
So I think and hope that is job done this time !
Cheers Mick.
So phase two was needed, the plan to space the magnets away from the DTI's with a plastic bar spacer.
Not sure what type of plastic is is but stinks when turned in the lathe.
Recessed the bottom for the magnets to sit in which turned out to be mistake in the end.
To get one of the magnets off the rear of the DTI I had to heat it slightly with pencil flame, I found out this spoils the magnet ( turns it into metal disc not magnet lol ) so after glueing the magnets in found one no longer was a magnet and the other was not sitting dead square so although it stuck, it would pivot on the most raised part.
I am starting to get bored with this project now so tried sticking another magnet ontop of the dead magnet and it worked, then tested a second magnet ontop of the still magnetic magnet on the other DTI and it was again effecting the DTI so heated the glued magnet to kill it , then glued new magnet ontop and they both eventually work
So I think and hope that is job done this time !
Cheers Mick.
Micktoon, proud to be a member of MetalworkingFun since Sep 2012.