Magnets for Trashy Areas

Very good write up by a member of the US Detector Prospector Forum re Magnets and the way to get the magnets rubbish stuff of the magnet.

He uses a 1inch magnet on a wooden rod with the magnet covered by a rubber/plastic chair leg stopper. To remove the magnetic rubbish just remove the rubber cover.

I have tried various methods in the past, eg large speaker magnets, but had trouble getting off the rubbish, so in the main I avoid rubbish areas.

The other comment here is you have this magnet screwed into say a 60cm broom stick where do you carry it so it does not interfere with the Z.

Have come across this magnet with a mounting hole but its an D40 strength where as the US writer suggest D52  is best.

https://www.ebay.com.au/i/254331092506?_trksid=p11401.c100711.m5036&_trkparms=aid%3D111001%26algo%3DREC.SEED%26ao%3D1%26asc%3D20170110121435%26meid%3D21ebc4b6ee454115bf5935fb14a0ed21%26pid%3D100711%26rk%3D4%26rkt%3D4%26mehot%3Dnone%26b%3D1%26sd%3D223860990600%26itm%3D254331092506%26pmt%3D1%26noa%3D1%26pg%3D11401%26brand%3DUnbranded&ul_noapp=true

This magnet screwed to the end of the wooden handle of your pick may give the Z problems and if screwed to the pick head with the cover could also create some issues.

Appreciate comments on your experience.

Peter

I have a vague recollection of someone building a magnetic drag rod, comprising quantities of round magnets inserted in conduit, for cleaning up areas with metallic rubbish prior to detecting but cant find any mention of it on the forum.
The D52 magnets are available here: [url=ebay.com.au/sch/i.html?_from=R40&_trksid=m570.l1313&_nkw=N52++Rare+Earth+Neodymium+Magnets&_sacat=0]N52 Neodymium magnets[/url]

Came across a prospector who stored his magnet in a small drawstring bag (Think it was a jewelry pouch?)
He dragged the pouch through the dirt containing his target before spooning it over coil.
When he stood back up he removed magnet from pouch, gave the bag a shake, replaced magnet and moved on.

Another used a roofing/patio type roller (some contractors use them to collect tek screws scattered on ground after finishing job) to clear a known area that had excessive surface iron scattered about. Simple two wheeled with multiple magnets glued to a length of PVC, handle fitted.

This could be the answer to those rusty iron riddled camp sites, lifted from another forum
https://www.bunnings.com.au/hart-heavy-duty-magnetic-sweep_p5810784

bicter wrote:This could be the answer to those rusty iron riddled camp sites, lifted from another forum
https://www.bunnings.com.au/hart-heavy-duty-magnetic-sweep_p5810784

Have used the magnetic sweepers before,very good on picking up metallic items in loose dirt,a pain with rocks bigger than the clearance of the sweeper about 20mm,good for use on freshly done fire breaks.

The pvc tube with magnets, would go magnet,wood dowl magnet,wood dowl and so on to required width,the one I have seen

PeterInSa wrote:Very good write up by a member of the US Detector Prospector Forum re Magnets and the way to get the magnets rubbish stuff of the magnet.

He uses a 1inch magnet on a wooden rod with the magnet covered by a rubber/plastic chair leg stopper. To remove the magnetic rubbish just remove the rubber cover.

I have tried various methods in the past, eg large speaker magnets, but had trouble getting off the rubbish, so in the main I avoid rubbish areas.

The other comment here is you have this magnet screwed into say a 60cm broom stick where do you carry it so it does not interfere with the Z.

Have come across this magnet with a mounting hole but its an D40 strength where as the US writer suggest D52  is best.

https://www.ebay.com.au/i/254331092506?_trksid=p11401.c100711.m5036&_trkparms=aid%3D111001%26algo%3DREC.SEED%26ao%3D1%26asc%3D20170110121435%26meid%3D21ebc4b6ee454115bf5935fb14a0ed21%26pid%3D100711%26rk%3D4%26rkt%3D4%26mehot%3Dnone%26b%3D1%26sd%3D223860990600%26itm%3D254331092506%26pmt%3D1%26noa%3D1%26pg%3D11401%26brand%3DUnbranded&ul_noapp=true

This magnet screwed to the end of the wooden handle of your pick may give the Z problems and if screwed to the pick head with the cover could also create some issues.

Appreciate comments on your experience.

Peter

I use a powerful little neodymium magnet on the end of my pick handle and it has been very handy to pick up fine shredded bits of steel cable wire and it hasn't been a problem to my 7000 as that handle end is sticking out backward in my belt while being carried, or not placed near the 7000 when digging a hole and the large metal head causes hassles more than the magnet. I haven't used the good tip from the article but will do if the bits become an issue.

Re (it hasn't been a problem to my 7000 as that handle end is sticking out backward in my belt while being carried,)

If your handle/magnet is vertical and the coil is near can you notice any difference, just wondering if there is a difference that cannot be noticed.

PeterInSa wrote:Re (it hasn't been a problem to my 7000 as that handle end is sticking out backward in my belt while being carried,)

If your handle/magnet is vertical and the coil is near can you notice any difference, just wondering if there is a difference that cannot be noticed.

I will need to set up a test to evaluate that "scientifically", but while I understand that there could be a difference, it is unlikely to change the way I do things or the impact on my detecting. When the detector would be in use, its position would tend to be off the side of the magnet and about a metre or more apart.