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#26

Rattail-1927
Member
Joined: 06 July 2018
Posts: 84
Member
10 August 2018 06:39 pm

Oh dear ... I paid $59 delivered for mine, maybe I will save it for something of some value other than spendables!


X-Terra 705 Dual Pack , wireless headphone kit, Minelab Pro-Find 35 pinpointer , KT-6808 tumbler
Oldest Coin Found : Aussie 1948 Three pence

#27

Tamelean
Newbie
Joined: 02 February 2019
Posts: 4
Newbie
14 July 2019 05:46 pm

Anyone used this to polish rocks?
Any hints as to ratios for polishing grit/water?

#28

Greenhornet_au
Member
Joined: 01 November 2016
Posts: 1,085
Member
15 July 2019 12:42 pm

SteelPat wrote:

I've had one of these for about 6 months and the barrel just shattered. So I've cut a bit of 90mm pipe and replaced the hexagonal perspex. At least I'll get a few more months out of it.

You can buy spare barrels on Ebay, or at least you could buy them.


Still looking for Captain Feather-swords treasure chest !
Won't be long now - 3240+ holes and STILL counting. (bloody ring-pulls and tabs) LOL

#29

Greenhornet_au
Member
Joined: 01 November 2016
Posts: 1,085
Member
15 July 2019 01:05 pm

Rattail-1927 wrote:

UPDATE, i bought a KT-6808 and set it up but haven’t tried it yet, in my mad rush waiting for it I was trying all sorts of chemicals to clean my spendables I tried 2/3rds vinegar and 1/3rd Worstichier sauce and it worked , even
On the green ones .... just give them a quick rub with a soap pad and good to go !

These are also used on ammo brass for cleaning and reliably work a treat !

You can clean coins by -
Put all coins into the container,
put metal polishing media into the container
a table spoon of dishwashing liquid,
fill container with cold water 25-30mm below the top
add 1/4 - 1/2 teaspoon of citric acid (supermarket purchase) it is cheap

Close container and tumble, water will get really dirty, dump through a strainer that will catch the metal polishing media (sink is fine as this is all biodegradable)
and redo the mix if things are not clean enough, but go light on the citric acid this time.
Times to tumble vary.

Copper coins WILL be damaged in this mix if tumbled too long or left in the liquid and come out bright copper with little to no detail !
Nickel coins will clean nicely but will also be damaged if left too long.

The GOOD thing about these machines is the clear case - stop it and check the coins every 15min until you know how it works.
.
.

ALTERNATIVE MIX - less coin damage

All the same as above, but you buy a polishing compound and instead of using citric acid, you use the compound because it is not corrosive.
The cost is higher but because you only use 1 teaspoon of polishing compound per batch, the stuff goes a long, long way.
I would also recommend that you use metal media that is not ball bearing, but stainless steel pins which can be purchased from the same source as the polishing compound.
Aussie Saphire are a good starting point.

https://duckduckgo.com/?q=tumbling+poli … =lm&ia=web

wink
.

Now I am going to see if I can find one of these tumblers for Kato.

Last edited by Greenhornet_au (15 July 2019 01:05 pm)


Still looking for Captain Feather-swords treasure chest !
Won't be long now - 3240+ holes and STILL counting. (bloody ring-pulls and tabs) LOL

#30

Greenhornet_au
Member
Joined: 01 November 2016
Posts: 1,085
Member
15 July 2019 01:09 pm

Tamelean wrote:

Anyone used this to polish rocks?
Any hints as to ratios for polishing grit/water?

There are heaps of methods and compounds, it takes time most of all.

Check here there should be lots to see.

https://www.prospectingaustralia.com.au … .php?id=60


Still looking for Captain Feather-swords treasure chest !
Won't be long now - 3240+ holes and STILL counting. (bloody ring-pulls and tabs) LOL


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