04/20/2013, 08:13 AM
Yes.. I have just done this and it works very well! An extremely positive location of the Pre3 on a Palm Touchstone.
Originally Posted by Garfonso
I used the 5mm dia. magnets, kindly donated by 'benh' here - and also filed the 'puck' to fit the phone back better.
In your para 2 above, the reason, I believe, is that the Touchstone's own magnets are positioned radially and 'on their side' ie. with one pole facing outwards towards the Touchstone's outer ring whilst the other pole faces inwards towards the centre of the face. The original metal disc is thereby exactly and correctly positioned to sit locked between the two poles of each of the Touchstone's 4 powerful magnets.
Therefore, placing an actual magnet, on it's 'end' in this (polarity-central) position in the Pre3 back instead, presents it with neither pole fully attracted to the Touchstone's own and opposite magnetic poles!
Thus as you decided, placing two magnets (per Touchstone magnet) in the Pre3 back cover, in such a position as to allow the opposite poles of each to attract to the Touchstone magnet's polarities, instead gives a very powerful 'double-ended' magnetic grip indeed!
Whether this wipes credit cards, disorients the internal compass or 'fries chips', remains to be seen/verified!
I have found little or no stress presented to/on the back cover- as I only used one layer of thin tape and the flat face of the battery pack allows the extra 1mm or so clearance required to house the x 4 extra magnets and (slightly trimmed) rubber shielding/backing piece, within the curve of the back cover.. (rather than sitting in the recessed seats provided for the original metal discs).