Nail detection in used lumber - Router Forums
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post #1 of 29 (permalink) Old 03-13-2020, 09:16 PM Thread Starter
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Default Nail detection in used lumber

I am looking for a good magnet for detecting metal in used lumber. I know this has been discussed before but I canít locate the thread.

Thanks.

Jon

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post #2 of 29 (permalink) Old 03-13-2020, 09:53 PM
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I'd think any of the small high powered magnets would work. I'd likely wrap it in something so it slides easily and has some sort of grip. You want to feel it being attracted to metal. I think I'd try wrapping it in low friction tape and leaving a couple of extra inches taped together like a tab. However, I think what will inevitably find the tiny metal bits will be your jointer or planer.
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post #3 of 29 (permalink) Old 03-13-2020, 10:02 PM
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Some stud detectors also do metal scans. My Zircon does.

Someone I consider a master woodworker once told me that a master woodworker is not someone who never makes mistakes. He is someone who is able to cover them up so that no one can tell.
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post #4 of 29 (permalink) Old 03-13-2020, 10:34 PM
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there are also metal detectors. Here's an example - https://www.amazon.com/Wizard-Little.../dp/B0093FJENM I have no idea how well it works but there are a lot out there. In theory a metal detector will work better than a magnet.

Note that both only detect ferrous metals. So stainless steel, copper, brass, lead don't get detected.
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post #5 of 29 (permalink) Old 03-13-2020, 10:55 PM Thread Starter
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Appreciate the feedback and warning on non ferrous metals. I’ll check out stud detectors.

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post #6 of 29 (permalink) Old 03-14-2020, 12:32 AM
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Stud detectors are different than metal detectors, Jon. I don't think I'd trust a stud detector to thoroughly scan a piece of lumber; if the nail is for arguments sake a finish nail, and it's perpendicular to the wood's surface, there's an excellent chance it won't be detected if you don't pass directly over it (with the stud detector). Much better odds with the metal detector
https://www.leevalley.com/en-ca/shop...metal-detector
Note that it detects all metals, not just ferrous.
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post #7 of 29 (permalink) Old 03-14-2020, 02:17 AM
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I used to use one of those wands that security guards use. Was very effective.

You can get them for $30 - $50....

https://www.seton.net.au/hand-held-m...RoC7pEQAvD_BwE

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post #8 of 29 (permalink) Old 03-14-2020, 06:51 AM
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Quote:
Originally Posted by PhilBa View Post
there are also metal detectors. Here's an example - https://www.amazon.com/Wizard-Little.../dp/B0093FJENM I have no idea how well it works but there are a lot out there. In theory a metal detector will work better than a magnet.

Note that both only detect ferrous metals. So stainless steel, copper, brass, lead don't get detected.
I have the Little Wizard... and it misses nails/screws, I wouldn't recommend it. I replaced it with the harbor freight wand type, which works great, and has never failed, although I have never used it on logs, but works great on pallet wood and reclaimed 2" construction/demo lumber.
https://www.harborfreight.com/9-volt...and-94138.html
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post #9 of 29 (permalink) Old 03-14-2020, 07:03 AM
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Quote:
Originally Posted by gmercer_48083 View Post
I have the Little Wizard... and it misses nails/screws, I wouldn't recommend it.
I have one and can recommend it...
Could this have happened to you????
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post #10 of 29 (permalink) Old 03-14-2020, 10:51 AM
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Quote:
Originally Posted by jw2170 View Post
I used to use one of those wands that security guards use. Was very effective.

You can get them for $30 - $50....

https://www.seton.net.au/hand-held-m...RoC7pEQAvD_BwE
James; i just opened your link...$361....yikes!!
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