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Gyroc Model B – what’s the problem??

Posted September 17, 2015 By Admin

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 find that there are a lot of people out there who learned to use a vibe tumbler and prefer to continue with the method they are familiar with.

Unfortunately, the manufacturer of the Gyroc Model B can no longer supply a working 230V version of this tumbler and therefore we (and other Australian dealers) can no longer supply this machine.  The story is a bit more complicated (you can read more below if you are interested) but here is the current situation.

  • 230V/50Hz Gyroc Model B tumblers are no longer available. The 60 Hertz motor will NOT work correctly in Australia.

Current Options for people needing a tumbler:

  • You can still purchase a 110V version from the USA and run through a power transformer – warranty support will be limited or non-existent but this is an option you may consider.
  • You can refurbish an older or 110V machine by fitting a compatible 230V motor – available here. This is a simple job that does not require any electrical wiring.
  • You can buy a rotary tumbler such as the Lortone 3A instead for cheaper option with similar capacity.
  • You can buy the slightly bigger Thumler Mini Bowl  (available now) – these have a better build quality compared to the Gyroc but offers only one speed as opposed to the two speed pulley of the Gyroc.

gyrocIf we can answer any other questions about tumblers for jewellery polishing, please email us.  For more on the whole sorry saga, read more below: Read the remainder of this entry »

Tumbler Size Options

Posted March 9, 2015 By Admin

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 VIEW the PDF document on Tumbler Barrel/Bowl Sizes

Note that we do list volumetric capacity in the chart as well as physical dimensions.  While almost all tumblers are described in terms of weight capacity (usually in pounds), this rating usually includes the weight of the bowl or barrel and can be influenced by a range of factors.  We find that it is more sensible to think in terms of volume (described in Litres) or available space with consideration taken not to overload the motor.

Bowl_Barrel

Whether you are tumbling rocks, rifle brass, or another material, just work out the batch size as it relates to the effective capacity of the barrel.  You can use a kitchen jug to help visualise the space taken up by a volume in litres.