I was pleased to see that Rutlands had become the official UK distributor for the Oneida Dust Deputy. This is a cyclone that you can retrofit to any shop vacuum. It must be stressed that this is for a shop vac and not a larger 4" or greater dust or chip extractor. The latter normally run at a lower vacuum but higher flow rate than a shop vac. They are designed to extract large volumes of chips.
A shop vac on the other hand is designed for lower flow rates but higher vacuums and is ideal for smaller particles such as fine dust.
The problem I have found over the years is that a shop vac filter clogs decreasing the efficiency of the unit to such an extent that sometimes it becomes useless. You then have to strip the unit down and clean the filter. It then works better for a short time until inevitably becoming clogged again so you have to repeat the process.
The Oneida Dust Deputy is designed to be used in line between the dust producer and the vacuum. The cyclone essentially swirls the dust and chips around and they drop into a pail underneath the cyclone and never actually reach the vacuum filter. Oneida claim that 99% of the material ends up in the pail with 1% only reaching the vacuum itself.
So reading between the lines the benefit is "most" of the vacuum is available all of the time and no need to constantly clean the filters.
I ordered mine on the Sunday online and it arrived on the Tuesday morning. In the evening I went into the shop to fit it to my aging MacAlister wet and dry 30 litre vacuum cleaner.
What's in the box?