Magnetizing a Tool

You have one magnet. If you have a second you can put on same line as the first but with inverted polarity the resulting field is weaker and you can take part off. Same principle is used to "fasten" supports on iron tables. One turn it sticks a further turn it is free!

worrier; build or buy a electromagnet, push a switch, magnet on, let go of the switch magnet off. perry

Although the part is not too big, a single electromagnet doesn't allow an even spread of the iron filings. i was thinking more along the lines of many very small electro magnets, but the details elude me. as to positioning and orientation.

You are not likely to get an even dispersion in that any edge creates an area of magnetic field leakage which will cluster the filings. If the part is smooth, then try applying your filings on a magneticly saturated part.

I've been told that there is a company that "Prints" electromagnets onto a flexible sheet. Apparently they use these in the security industry to stop shop lifters stealing things from shops. They are inside the beeping things that are by the doors in shops.

Thanks for the replies .

Size of tool is not given, Yet you can study the concept of magnetic V blocks or magnetic stands.

Can you make the splash itself into the electromagnet ? Maybe use a material or covering that is less magnetic also ?

Worrier,

Use a variable low voltage ac source and coil of wire around the tool for making the tool magnetic (electromagnet) and decrease the voltage gradually to demagnetize (degauss) the tool and anything that is stuck to it.

I use a coil of wire and a variable low voltage ac source to demagnetize (degauss) my tools after they have been in contact with magnetic fields.

Jon

We use lifting magnets for small job handling in which the permanent magnet poles are aligned to strengthen each other amd by and handle they reverse to cancel each other. Similar concept may be used by you if your tool material may be used with low magnetic retaintivity.

Even the magnetic bases of the dial gauges are like this. In fact we sometime put an iron rod at its end to take out metallic chips. powders from deep holes.

I tried but could not get the cross-section detail of the tackle .

How about a cheap, readily availible moveable magnet like the ones used in gage stands? Or a switched AC coil would do the same, but warm up with use.