Mindsigh

GMC 1HP/750W Dust Collector review

Posted by Jerry on January 9th, 2006 — Posted in Technology, Woodwork

Happy new year everyone! Time to review one of my new toys – the GMC 1HP dust collector.

I was due to run some fence palings through the Ryobi 13″ thicknesser for a friend who makes picture frames, so it seemed a good test for the GMC dust extractor. My earlier attempts to keep the dust and chips from the thicknesser from forming a large pile of chips on the floor and a thick cloud of dust in the workshop had only met with marginal success.

My Ryobi thicknesser did not come with a dust extraction port (the new ones do from last year). So I had fitted the dust port from a Sherwood 13″ thicknesser – it fits perfectly (purchased from Timbecon as an accesssory at last year’s Working with Wood show in Canberra). And I had cobbled up an adapter to the shop-vac but that had been only partially successful – when the bin filled all dust extraction ceased!

Enter the GMC dust extractor. It came in large box with some simple assembly to do – fit the handle, the casters – which do help with moving the 20kg machine around – and the collector hose and bag.

First the good points – set up was easy with a clear well illustrated instruction booklet. The construction seems pretty solid – although the 4″ (100mm) hose seems very thin walled and looks as though it would hole easily on a snag. The induction motor is very quiet compared with the shop vac, and there was little discernable difference in sound whether the motor was under load or not – ie whether or not the hose was constricted. The bag is a good size for hobby use and is made from a tight weave polyester, and is rated for 30 micron particle size.

What this means is that it will do a great job of clearing the chips and coarse sawdust, but the fine stuff that damages your lungs will go straight through the bag – you can see it as a fine cloud when you start the machine up – so keep the mask on for personal protection. GMC would do well to offer a 4 micron felt bag as an accessory – but I suspect the carbatec or sherwood ones would fit perfectly – and will be on my shopping list.

The hose was a good fit on the 100mm extracator port on the thicknesser and the machine did a very respectable effort at capturing probably 98 percent of the dust and chips – and it did so for a good hour without getting warm.

Summary – this is a good hobby machine for those with limited workshop space who need a solid, but light and portable dust extractor for occasional hobby use. It does not have the capacity or airflow (measured in cubic feet per minute – cfm) of a 2-3 horspower machine, but it represents a good effort for GMC’s entry into dust extractors. I would definitely fit a carba-tec or sherwood felt bag to capture the finer dust, and contrary to the brochure I would not be using this for more than one machine at a time. But at half the price of its competitors (under AUS$100), this is a great accessory for any hobbyist woodworker.

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