Question about sensitivity setting while in all metal.

[fwcrawford]

I have a question concerning Tesoros sensitivity setting while in all metal.
I have a Vaquero and understand that when in all metal the sensitivity cannot be adjusted and is just about at max. setting.
I also know that some other models are like this also, but was wondering about the Silver

 

[digitaltim]

Youre saying the log is on an iron rack and he wants to find nails. That's kind of like placing a dime over a silver platter and then trying to pinpoint the dime.


He can just turn the discrimination all the way down ( instead of the all metal toggle switch) and lower the sensitivity to scan the outside of the log, but if there's anything deep in the wood I think the iron rack will mask it.

I think that'd be the case with any detector used.

I'll have to air test when I get home... I'm assuming the sensitivity will lower that way.

 

[fwcrawford]

Yeah, I figured that this would be tough to do with the log laying on top of the saw assembly.
Probably the best thing to do is try to scan the log while it is still on the ground and even then, it may miss a nail if it is a large log.
I thought about using discriminate mode and lowering the disc. setting, but didn't know if it would still pick up any nails.
This might be tough to do and get good results, but I told him I would do some research and maybe come up with some kind of ideas as to what kind of detector may help him perform this task.
Thanks,
Felix

 

[digitaltim]

If it's on the ground it'll pick up the nails for sure.

All you would need is a compadre for that... With the disc turned all the way down a compadre will easily hit a nail. I can find tacs and pins with the compadre 6" down in wood chips. Yesterday I got a blip ( not a solid hit) with the compadre... Iturned the disc down to all metal and hit a nail 4" down in the dirt. It can do it easily... Most detectors can, but not all will pinpoint as precisely as a Tesoro.

The silver umax will go much deeper than the compadre though.

 

[AZWIP]

Hmmm... are ya'll saying that once I have my silver set to All Metal, that the sensitivity adjustment no longer functions? If thats true, I didn't know that. I "thought" the sensitivity adjustment worked in both Disc and AM modes? No?

Thanks.

 

[digitaltim]

I did some rough air testing the other day with the silver umax. The sensitivity didn't change in all metal mode.

I tried to mimic the situation the OP was referring to by placing metal a few feet below the target. Adjusting the sensitivity in discrimination mode only changed the detection depth by a few inches. I used a coin and some paper clips to detect. The paper clips were detected easily in all metal, but barely registered in disc mode. Disc was turned all the way down. The coin hit hard in both modes.

Air tests... For what ever that's worth.

 

[NVmar]

If nails are on surface, there shouldnt be any issues detecting them. How could nails possibly be jamed inside deep? trees grow from the inside out

 

[Dan-Pa.]

I would try low sens. as the iron rack beneath the log is laying on would surely affect the unit...Another thought is a small coil as they usually work well in Kidee lots and can get pretty close to swing poles and still detect...and should get the nails at low sens in disc or perhaps all metal but would try it in disc. first...Should be easy to test by laying a nail on the log while the log is laying on the iron rail..

Water companies and surveyors use ferrous detectors but would not work as they get good depth looking for underground pipes and iron posts...

 

[fwcrawford]

According to the manual that I looked at online for the Silver

 

[fwcrawford]

I figured this would be hard to perform due to the rack laying directly under the log.
I figured if the sensitivity could be turned down while in all metal, then maybe this detector could possibly give good results,
but this does not appear to be the case.
Thanks again,
Felix

 

[slingshot]

Yeah, the sensitivity CAN be lowered to a certain degree, but after about #4 on mine, it's kinda stuck to a certain sensitivity. Another solution would be the 4" coil that I use on mine. It could scan the logs but not have enough depth to reach the rack below.

 

[digitaltim]

If the nail was inseter while the tree was young would it stay deep while the treegre around it?

 

[fwcrawford]

If a nail was put into the tree while it was young, over time the tree would grow around it and cover it just like it does a barbed wire fence.
I hunted a site a couple of years ago that had a horseshoe place in a fork that was very close to the trunk a long time ago.
The only part visible today is the very end where the cleat is located.
This is a very huge Beechnut tree that is probably about 3 feet in diameter.
Now that would play heck with a saw blade wouldn't it?
Felix

 

[AZWIP]

Yeah, seems the sensitivty does change a little on my Silver... not a whole lot, but it does impact some... in All Metal.