This is my version of a magnetic power adaptor for an Acer 1410 laptop, You should be able to modify the steps fairly easily for work for any laptop though. It is effective, easy to build with common materials, and takes the strain off of the internal connection and motherboard. It also holds on well enough to not come off unless it is supposed to.
Edit: There have been some changes to the design, mostly involving using thin copper foil in place of aluminum duct tape. There were heat issues involving the aluminum tape, these issues have been resolved by swapping out the aluminum tape for copper foil. Thanks to instructables members jeff-o and CyberBill for their insights and suggestions.
This modification should be completely reversible and do no harm to the laptop or original power adaptor.
Please always take your time to work safe and unplug the power cord and laptop battery.
A big thanks goes to breath for his original ThinkSafe instructable located here:
ThinkSafe: A Magnetic Power Connector for Thinkpads
Step 1: Tools and Materials
Matchsticks (to apply epoxy)
Neodymium Ring-Shaped Magnets (enough to cover your adaptor plug with some overhang)
Wire Studs (to fit into the power socket)
Steel Washers (asst. sizes, make sure your magnets will STICK to them)
Thin Copper Foil (Note: aluminum duct tape has too much resistance)
Two-Part Epoxy Adhesive
Calming Incense (to keep you sane while working with the fiddly bits)
My design for building this adaptor changed many times throughout the build due to trial and error, it is best to start out with too many pieces and then narrow it down to what you actually need than to be stuck without a part you really need.
Magnets: $2.45 each
Wire Studs: $1.65 for 10
Copper Foil: $10
Various Washers and Nails: $4
Total Cost: ~$32 CDN