garret 300i/newbie

Garrett Ace 300i Metal detector Topics Only.
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garret 300i/newbie

Post by detecting rod » Thu Jul 04, 2019 9:56 am

ok my garret 300i is just over a week old been playing with it in garden,watching and reading lots of things ,but ive set it to jewellery mode getting strong high pitched sounds scores 85-99 but still seems to be mainly iron,have found 1 coin a 1962 sixpence ,but im still ruining the lawn digging mainly iron?also as new to the hobbbie every thing looks exciting at minute so even though lots of iron couple of bits i would like to have a better look at whats best way to do this ,clean off alot of rust i mean ?



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Re: garret 300i/newbie

Post by SuperRed » Thu Jul 04, 2019 10:36 am

Welcome Rod. The garrets do tend to find a lot of (small) iron, depending where you have set discrim. The garden can be deceptive, so don't lose heart. Mine is medium-sized, loads of long-gone sheds, fences, residential EMI, etc, and raised with imported soil, so certainly not a real testing of a machine. Try and grab yourself a permission and you'll see the difference.

Cleaning the rust? It depends what you think it may be.
Brad

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Re: garret 300i/newbie

Post by detecting rod » Thu Jul 04, 2019 12:01 pm

thx for reply just have a feeling im missing a little gem out in the garden ,il keep plodding on ,im sure at some point il just try to clear all bleeps just to make sure

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Re: garret 300i/newbie

Post by RossDG » Thu Jul 04, 2019 2:17 pm

Assuming the 300i has the same sort of control layout as a EuroAce I would:
  • Use custom mode
    Notch out/reject the iron segments on the discrimination
    Reduce sensitivity by 2 (so top 2 segments off)

    This should help with the iron, but round iron objects like washers, nuts etc will still give a good signal at times as will flat iron, but you should be able to hear the iron tone coming through as well.

    Hope that helps.....
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Re: garret 300i/newbie

Post by Dave The Slave » Thu Jul 04, 2019 2:40 pm

RossDG wrote:
Thu Jul 04, 2019 2:17 pm
Assuming the 300i has the same sort of control layout as a EuroAce I would:
  • Use custom mode
    Notch out/reject the iron segments on the discrimination
    Reduce sensitivity by 2 (so top 2 segments off)

    This should help with the iron, but round iron objects like washers, nuts etc will still give a good signal at times as will flat iron, but you should be able to hear the iron tone coming through as well.

    Hope that helps.....
Hi Rod, as a 400i user the above from Ross is spot on.
Tend to run my discrim below 60, which gets rid of nails but you will still find, Brass , Copper, Lead, Silver.
Good Luck, ::g
Dave.
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Re: garret 300i/newbie

Post by detecting rod » Thu Jul 04, 2019 4:45 pm

thx for tips

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Re: garret 300i/newbie

Post by 4Tuna » Thu Jul 04, 2019 6:56 pm

detecting rod wrote:
Thu Jul 04, 2019 9:56 am
ok my garret 300i is just over a week old been playing with it in garden,watching and reading lots of things ,but ive set it to jewellery mode getting strong high pitched sounds scores 85-99 but still seems to be mainly iron,have found 1 coin a 1962 sixpence ,but im still ruining the lawn digging mainly iron?also as new to the hobbbie every thing looks exciting at minute so even though lots of iron couple of bits i would like to have a better look at whats best way to do this ,clean off alot of rust i mean ?
Ah, the both incredible & horrendous feeling of having a detector & no where to explore! Vivid memories..

So before you totally destroy your lawn..

Jewelry mode is a good starting point.

If you are having iron issues, knock off another bar of discrimination in custom mode. Leaving you with an audio alert, of all signals above 40.

Large signals in the 80/90 range can be identified before digging, by getting to know the pinpoint function.

A coin type item will most likely give a similar number in the 80/90 range, but once you have scanned over the area using the pinpoint, you will be able tell the rough size of the target.

Try with a visual, above ground test to begin with - place a coin on the floor & use the pinpoint.

Then a large piece of iron (sounds like you have dug some ready to test!)

The signal of a large object will begin to show far away (compared to the small)

A coin type target will go from silent, to loud very quickly. While a MASSIVE IRON will register from quite a distance & the sound will increase in intensity, the closer you get, over a longer space. Indicating something bigger.

This works vertically as well as on a sweep type motion.

Try it. Hold the coil above the coin with the pinpoint active & lift it straight up.

The sound dies off quickly.

Again, hold the coil above the MASSIVE IRON with the pinpoint active, & lift straight up. You may be able to register a signal/sound some 10/20/30cm ABOVE the item.

Indicating that it is indeed, not a lovely coin, but just a chunk of MASSIVE IRON.

Image

And look up electrolysis for cleaning up rusted finds..

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Re: garret 300i/newbie

Post by 4Tuna » Sat Jul 06, 2019 2:14 pm

Dave The Slave wrote:
Tue Jun 12, 2018 1:43 pm

My custom setting is the last 5 blocks 60 to 99, 2 bars off max sensitivity, sometimes 3 blocks off if falsing due to wet grass and iron audio off.
These settings have found me most of the metals, Silver Denarius, silver milled which was very thin, brass, copper, lead, aluminium, pewter plus all the modern coins. Will also get large deep bits of iron, interesting bits tend to come in between lower 60`s and around 91.

Alright Dave, noticed gold isn't on your list..

Have you seen this?



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Re: garret 300i/newbie

Post by detecting rod » Wed Jul 17, 2019 11:08 am

thats for that great info,sorry for slow reply but been away

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Re: garret 300i/newbie

Post by Saffron » Wed Jul 17, 2019 1:00 pm

I started with the Ace 250 and the Garrett Ace series are good machines, and IMHO fantastic value.

I strongly recommend the official Garrett instructional videos which can be found linked from the top right of the 300i page.
https://www.garrett.com/hobbysite/hbby_ ... in_en.aspx

Similar instructional videos can be found from the pages relating to the other Garrett machines.

Evan

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