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Aussie Sapphire – The Lapidary Warehouse



The Aussie Sapphire Blog



Last Build Date: Fri, 19 May 2017 07:33:47 +0000

 



Comparison: Lortone QT12 and Thumler Model B

Thu, 13 Apr 2017 22:48:55 +0000

When polishing rifle brass, wet tumbling with stainless steel media is now the preferred method – for reloaders, this process is faster and much more effective. There are a number of options when deciding which tumbler to buy.  The Qt12 and the Thumler B tumblers are two of the most popular models so we thought […]



Diamond Saw Blade Types

Sun, 26 Feb 2017 07:40:36 +0000

Have had a few questions recently about the different types of saw blades so thought it worth a post. Essentially, there are three main types of diamond saw blades used in the lapidary field – all have their pros and cons. A) Sintered Blades Sometimes referred to as Continuous Rim Blades, these blades are more […]



Gyroc Model B – what’s the problem??

Thu, 17 Sep 2015 05:49:59 +0000

The Gyroc Model B has been the workhorse machine in many jewellery studios for many years – the smallest 3 pound model is an ideal size for the small scale polishing requirements of jewellery makers.  While the 3A Lortone Rotary tumbler is a similar size and also a fantastic machine for the job, we do […]



Tumbler Size Options

Mon, 09 Mar 2015 04:06:11 +0000

We are often asked about sizes of the various tumblers in our range. While information about barrel/bowl dimensions is included in the listings, it can be a bit confusing to compare between them. So we have put together a chart which outlines the dimensions and volumetric capacity of the most popular sizes. CLICK HERE TO […]



Slab Saw Coolants

Sun, 23 Nov 2014 02:33:49 +0000

We are often asked what is the best coolant to use in a rock saw and given that there are lot of different “recipes” out there, we thought a more thorough look at this topic would be useful. The job of the coolant is three-fold: to cool both the blade and the material being cut to […]



Classifier Mesh Sizes

Sun, 16 Nov 2014 06:21:22 +0000

Classifiers are used to size material accurately for classification – often used by gold prospectors who need to size concentrate for use in spiral wheels or the like. 1/2 inch (the largest screen) is about 4 holes per square inch (use to remove worthless larger rocks) 1/4 inch is about 16 holes per square inch […]



Lapidary – where to start?

Thu, 16 Oct 2014 07:00:23 +0000

We often get calls from people who are interested in rocks and gems, would like to get started in the lapidary hobby but dont know where to start. It is a good question but a very BIG one that will need some research first. First question is why type of work are you interested in? […]



Cleaning bolts in a tumbler – PART 2

Wed, 02 Apr 2014 05:07:02 +0000

Part 2 of this article covers use of a rotary tumbler for this job. In this test, we have used both #80 and #46 silicon carbide grit as well as medium cut ceramic media (triangle shape) – a bit water is added for the rotary type tumblers – aim to fill the barrel up to […]



Cleaning bolts in a tumbler – PART 1

Wed, 02 Apr 2014 04:35:29 +0000

Every now and then we get asked about cleaning bolts in a tumbler so we thought it was time to post a few pictures with extra information.  Tumblers are great for cleaning up all sorts of metal objects as it takes a lot of the tedious hand-work out of the job. There are a few […]



Rock Tumbling FAQ

Mon, 04 Nov 2013 05:02:16 +0000

Rock Tumblers are one of our biggest sellers but you may have questions – see the FAQ below and it is very likely you will find an answer. HOW LONG DOES IT TAKE? Time varies but when using a standard rotary (barrel) tumbler, it can take around 4 to 5 weeks of continuous operation. It […]