New Zealand Gold Prospecting & Metal Detecting Forums Archive

The forum has moved to community.paydirt.co.nz, see you there!

This forum is now an archive to preserve the knowledge and finds posted here.

Update on 'Blue Bowl' mold

keywikiwi		Posted : Thursday, 22 March 2012 7:22:57 PM(UTC)
Rank: Gold Nugget Groups: Registered Joined: 4/03/2012(UTC) Posts: 66 Location: Invercargill Thanks: 3 times Was thanked: 17 time(s) in 12 post(s)		Just thought id put a photo up of my progress, and as you can see i have finished the mould and will give it 4-5 polishs before gelcoating and glassing to make the first cast ;} cheers File Attachment(s): SAM_0450.JPG

mineforgold.co.nz		Posted : Thursday, 22 March 2012 8:59:18 PM(UTC)
Rank: Gold Ingot Groups: Registered Joined: 14/11/2011(UTC) Posts: 299 Location: Nelson Thanks: 58 times Was thanked: 38 time(s) in 35 post(s)		Looking good so far.
		Own: Lobo SuperTraq, Garrett ATPro, Minelab Excalibur
		WWW BLOG

roughau		Posted : Thursday, 22 March 2012 9:55:32 PM(UTC)
Rank: Gold Dust Groups: Registered Joined: 15/09/2011(UTC) Posts: 3 Location: new zealand Thanks: 4 times Was thanked: 1 time(s) in 1 post(s)		Brillent, Mr Kiwi. What a great project. I bought one and decided that it was too difficult to make. They do work, but the feed rates are slow. I havent tried 100 mesh plus, as on the Rob Goreham video on the Prospecting Channel, but I think that if the feed rate is right, it should work. All the best with this great project. CHEERS JET

kiwikeith		Posted : Saturday, 24 March 2012 5:17:54 PM(UTC)
Rank: Gold Ingot Medals: Groups: Registered Joined: 28/06/2011(UTC) Posts: 648 Location: hector Thanks: 359 times Was thanked: 230 time(s) in 154 post(s)		looks great i have tried making one with no luck even tried getting one of mums baking pans the one with the hole in the middle still no luck all the best let us know how it goes

East-Auck-Fossicker		Posted : Sunday, 25 March 2012 10:03:54 AM(UTC)
Rank: Gold Nugget Groups: Registered Joined: 12/06/2011(UTC) Posts: 84 Location: Auckland Thanks: 10 times Was thanked: 21 time(s) in 11 post(s)		I've got a blue bowl and it works very well. I'am a boatbuilder and have made a few moulds. I don't think you quite got the cone in the centre quite right. My one ,the cone comes up on a 45 and then the last 10 mm comes stright up and slopes out just a little bit. To make a mould like this ,the top part of the mould would have to be removed before removing the bowl from the mould. Anyway if you have any problems give me a yell.
		WWW

keywikiwi		Posted : Sunday, 25 March 2012 10:41:21 AM(UTC)
Rank: Gold Nugget Groups: Registered Joined: 4/03/2012(UTC) Posts: 66 Location: Invercargill Thanks: 3 times Was thanked: 17 time(s) in 12 post(s)		Yes ,i too was in boatbuilding trade then spent 10 years in fibreglassing workshop getting trade in composite engineering. I have built hundreds of molds for just about every industry you could think of.Yes ,my blue bowl mold is not identical to original bowl with inverted flare at top of funnel as i only wanted to do one layup .But when processing concentrate I will have mini sluice to collect ultra fine gold that comes up over the centre funnel set up under bowl.When I made the plug,I tested that. I ran some material and probably lost 30% out of it.Which is okay because mini sluice will recover that.If i want too i can add a rubber o ring to top of center funnel which will act as the flare edge. Anyway Im new to this gold prospecting stuff but im well and truly hooked and have a bad case of gold fever!!!There is so many products for this industry that I could make with fibreglass but dont really have the time. Thanks for the offer of help though East-Auck-Fossicker, thats a rear thing these days .Id like to extend that same offer to anyone on here that may need any advice on fibreglassing in general, just give me a buzz on here and will be happy to advise. Orepuki black sand is da bomb!! cheers ps have just about finished my alloy sluice will post some pics up soon