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Messages - Rusted

Pages: [1] 2 3 ... 26
1
Gemstone Faceting / Re: MB concave build
« on: September 11, 2019, 06:52:03 AM »
I don't know about Tin, but Pewter is readily available at Op shops very cheaply.

2
Gemstone Faceting / Re: Drabsch Faceting machine, help required.
« on: September 02, 2019, 04:26:15 PM »
Thanks Ghost
No hurry, I think I have figured the vernier so just the dial indicators.

3
Gemstone Faceting / Drabsch Faceting machine, help required.
« on: September 02, 2019, 10:30:14 AM »
Are there any Drabsch, LWD engineering facet machine users here?

I acquired one at the weekend, I have just about everything figured out but I am at a loss as to what the two dial indicators are doing, both were loose in their mounting so I have to figure out how they are supposed to work, then make them do that.

A quick tutorial on using the vernier scale would help too.


4
Cabbing and More / Re: Problem with 6" Expander Wheel
« on: September 02, 2019, 07:26:59 AM »
We had one that just got old and the rubber went too hard to expand.

5
Gemstone Faceting / Re: MB concave build
« on: August 28, 2019, 07:41:47 AM »
That is just beautiful Makky, superb workmanship.

6
Tips and Gadgets / Re: can you clean rocks with Coca Cola ?
« on: August 28, 2019, 07:33:38 AM »
You can get stronger Phosphoric acid at Supercheap and possibly other petrol head type shops, Septone Rust converter is Phosphoric acid.
Some people prefer the "organic" method and boil their rocks in lemon juice, it would smell better than some of the others anyway.

7
For Sale or Swap / Re: Faceting Designs Book
« on: August 22, 2019, 09:10:10 PM »
The Fusion nine oval 1.42, because it is around the right ratio of length to width for a cast setting I have.
I cut a nice piece of Zircon for the setting originally but it might as well be a piece of glass, just a dead lifeless stone. I might scratch around and see if I have another piece of Zircon a I can give a go, that or a nice Flinders Island Topaz.

8
For Sale or Swap / Re: Faceting Designs Book
« on: August 22, 2019, 08:08:51 AM »
Hi Makky

My problem came about because I hit a flaw near the girdle after I had cut the facets that remove the preform TCP. It left me in a spot that I couldn't get out of without recutting them, the stone was too small to really see what was happening anyway.

Not a problem with the instructions or anything you have done, it really is quite easy once you get the feel for the way it works.
I chose the Oval specifically because I could see it was going to be difficult, there's no better way for me to get a difficult concept to gell than having a go, making mistakes and working through them. I think.

It really is the best Oval I have ever cut, a clear winner over anything oval I have done before. Difficult, yes but a clear winner.

9
For Sale or Swap / Re: Faceting Designs Book
« on: August 21, 2019, 04:55:32 AM »
I recommend cutting a simple shape first to get the feel of the way Andrews designs work, they are a bit different.

Well I jumped in at the deep end as usual and cut an oval first up, after couple of hiccups it came out amazing.

I started my oval on a small piece of Peridote and after a while I got completely bamboozled, I took that off and threw it in the bin and started the same design on a bigger piece of Springsure Labradorite, I got to the same place again in the design but now could see where it was heading (bigger stone) so easily finished it. Beautiful performance for a fairly low RI stone.

I did save the Peridote from the bin, it will see another day.


10
Gemstone Faceting / Re: Gemmasta 4/5 belt repair or replacement
« on: August 20, 2019, 06:25:50 PM »
Go to your local bearing supply place and buy a length of Urethane belting, it's usually round and hollow, 3/16 or quarter is the diameter you want. Usually the orange, though green will do.
They will probably try to sell you a little barbed joiner give it a miss, they tend to make a knock every time the joiner goes around.

To join the belt is easy, join it in position so you don't need to dismantle any of your machine. Feed it around your pulleys and mark where you need to cut it, keep it a little tight. then slip it off the pulleys so you can have the ends accessible. Cut the ends nice and square with a razor blade.

This is where you are going to need a spare pair of hands.
Get an old kitchen knife with a long blade so your helper can hold it without getting in the way, heat a small area of the blade hot enough to melt the plastic belt. Hold the flame in one position so you don't get soot on all the blade, next bring your belt in to a non sooty spot and just lightly hold the ends on either side of the hot blade for a couple of seconds, you will see the urethane melt, slide the belt ends off the blade and quickly bring them together nicely lined up. Don't push the ends together hard or you will squeeze the molten urethane out and have a weak join. In a second or two you will have a join that is as strong as the belt, you can cut the excess bulge off if you like but I find it doesn't knock or bump at all and probably gives a stronger join if left on.


11
Tips and Gadgets / Re: can you clean rocks with Coca Cola ?
« on: August 13, 2019, 07:36:34 AM »
Coke contains Phosphoric acid, so will clean some stains off some rocks.
Calcite deposits, vinegar will do, or Hydrochloric acid. (Bunnings)
Oxalic acid for rust stains, Diggers Rust and stain remover is 100% Oxalic acid also from Bunnings.
Organic stains and Tannin might need a soak in some White King type bleach.
Careful with all of these, Hydrochloric will dissolve skin and eyes, Oxalic will ruin your kidneys,  beware of fumes and use outside with rubber gloves and appropriate safety gear.

12
For Sale or Swap / Re: Faceting Designs Book
« on: August 05, 2019, 10:40:23 AM »
Good One Makky
Wow, Congratulations on your book, amazing work, amazing designs.
I can't wait to try cutting them.

My wife is looking through it while having a coffee and lots of wows and that's pretty, so from both of us, a big thumbs up.

13
For Sale or Swap / Re: Faceting Designs Book
« on: July 19, 2019, 10:14:59 AM »
Hi Macky
Reserve me a copy.

Have a look at Oppositional defiance by Akhavan, I cut it in CZ a few days ago and it's a stunner. Not a beginners cut as hardly any meet points.

Another good one for low RIs is Sakura 80 by Voltolini, I cut it in Amethyst and Citrine and clear Quartz, I love the coloured ones,  but the clear got all the attention when I showed it around at my club yesterday.

It's good weather for faceting, too miserable and cold for doing much else.

14
Saws and Diamond Blades / Re: ebay - plans for 16" saw......
« on: July 15, 2019, 08:54:13 AM »
I think this is the thread.
http://forum.rocktumblinghobby.com/thread/77759/24-wet-plans

I can't see the cutting files though maybe it wasn't this thread or they were added in later posts, there's a lot of good discussion in the comments.
This is for a 24 inch saw but it should be easily scaleable.

For the lid go plexiglass, it's very easy to work with and much lighter than steel.

15
Saws and Diamond Blades / Re: ebay - plans for 16" saw......
« on: July 15, 2019, 08:25:31 AM »
Have a look on rock tumbling hobby
http://forum.rocktumblinghobby.com/

About a year ago someone posted full plans for a large saw for free, I think it even included CNC cutting files for the parts.

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