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australian electronic gold prospecting  |  Recent Posts
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 on: Monday June 18 2018 10:33:44 AEST AM 
Started by sd220d Digger - Last post by bugwhiskers
A QED Western.


 on: Monday June 18 2018 09:54:18 AEST AM 
Started by Aziz - Last post by Muntari
Hi Ian,

Good to hear you are up and about again.

I've been snowed under with work and been out in the paddocks while weather is good and not had much time for the coil project lately.
Everything is ready to assemble and test, just have to find time to do it now.

The coil comparison sounds like a plan.



 on: Sunday June 17 2018 15:57:45 AEST PM 
Started by Aziz - Last post by IBGold
Testing against an 18' Elite flat wound Mono first up.

Regards, Ian. happy face

 on: Sunday June 17 2018 14:06:46 AEST PM 
Started by sd220d Digger - Last post by 6666
I got my machine back with upgrade, received my new scales but they are faulty, the longer you leave the object on the scale the lighter it gets. FURIOUS

 on: Sunday June 17 2018 14:04:02 AEST PM 
Started by Aziz - Last post by 6666
I am curious as to what will be the bench mark for seeing improvement over current coils ?

 on: Saturday June 16 2018 21:05:34 AEST PM 
Started by Aziz - Last post by Aziz
Hi all,

good news. Marble flour works really fine.
I have now the perfect pastel surface and grounding recipe for my large canvas.

I can start preparing the large canvas soon.

 on: Saturday June 16 2018 21:03:38 AEST PM 
Started by Aziz - Last post by Aziz
Hi Aziz did you get my PM re coil?

Regards,  Ian.

Oh sorry, I have overlooked it.
I have replied to your PM now.
 happy face

 on: Saturday June 16 2018 15:12:11 AEST PM 
Started by Aziz - Last post by IBGold
Hi Aziz did you get my PM re coil?

Regards,  Ian.

 on: Friday June 15 2018 22:29:04 AEST PM 
Started by Aziz - Last post by Aziz
Hi all,

pity, the clumping cat litter (bentonite) doesn't work well. It is too fine and is not a good filler for the fibres of the canvas.

I have washed all my small test canvases to get rid of this junk.
I will try the marble flour now (I know, it works really well for pastel surfaces).

In the mean time, I have bought cheap 25 kg play sand and there is enough fine quartz sand for sieving. This will save me a lot of time grinding it further.

Oh well, I have lost 1 Week in my time line. But without the right pastel surface, I can't realise the "magic" in an image.
My self made pastel surface recipe gets better and better over time.


PS: Thanks Ian.

 on: Friday June 15 2018 16:14:48 AEST PM 
Started by Aziz - Last post by IBGold
Hi all,

Jeff fine I had the Right one done 13 years ago now for the left one only this one is a bit more problematical but once done should be fine and I know all about the rehab.
Attached find a picture of my latest Mono spider coil I am hoping to get it finished before my opp.

Regards, Ian. happy face

Hi all I am back starting to be able to use the arm again and have now finished this coil final details are.
Mono spider coil.
20 turns of 150/38 litz wire.
Turns spacing 5 mm former 10 mm thick rebated 2 mm deep 1.6 mm wide to take the winding both sides.
Coil to shield capacitance.   = 106.2 pf.
SRF shield in place but not connected.   = 695 KHz.
Coax 1400 mm long.       = 100 pf.
Finished Inductance.   = 295 uh.
Finished resistance.    = 0.48 ohms.
Finished SRF.         = 552 KHz.

the Litz RX coil is ready for shielding will do that in the next few days. 

Regards, Ian. happy face

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australian electronic gold prospecting  |  Recent Posts

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