Thread: Suitable Dust Extraction?

Hi Paul

on industrial scale CNC machines, the cutter is enclosed in a broom like shroud which is attached to the dust extraction system
something like a large version of the brush in this set

Thanks for your reply Ian. The Triton router has a reasonable dust extraction when placing it straight onto the work. The problem is the bit goes through the board, rendering the standard system non-existent. Also the gap between the router and the work changes, this depends on a few things. So placing the extraction under will have to be highly adjustable. The best I've come up with is a catcher of sorts at one end and cut so all the larger bits end up there. Plus wear a powered dust mask.

I've googled this fair bit and not found any that are similar with dust extraction. Maybe I'm asking too much.

have a look at these shrouds
http://www.kentcnc.net/nc/products/9...dust-shoe.aspx

http://www.hamrx8.com/Router_Dust_Extraction_Hood.html

CNC shrouds are designed to use small volume of high speed air to collect chips from small bits so are unlikely to be effective for the large volumes of fine dust generated from a large bit in a router.
The CNC shrouds are too restricted to allow for adequate air flow since the only place air is able to get into the hood is through the bristles on the shroud.

To allow the shroud to breathe, a 3rd hole is needed on the top of the shroud to allow air into the shroud. As a minimum a 100 mm duct should be used so at least a 100 mm breathing hole should be used. Ideally a 150 mm duct should be used but what I would do is use a 100mm on the shroud and put a 150 mm duct about 200 mm above the router - this will suck heaps of air away from the work and keep the shed clear of fine dust. Of course at least a 3HP DC with 150 mm ducting that is vented outside will be needed

The trick with this is not to be too concerned about the chips which will still continue to be flicked around everywhere and you may need to stop every now and then and unclip the 100 mm duct from the shroud and vacuum up the chips.