On 15/04/2021 10:12, Tricky Dicky wrote:
On Thursday, 15 April 2021 at 09:37:10 UTC+1, Andy Burns wrote:
wrote:

I think about improving DE from time to time
check mike farrington on youtube, ISTR he built a table saw dust
extraction system ...
For dust extraction to be fully effective it needs to be extracted at the point it is produced. On a table saw that is the point at the front of the blade as it passes under the table. On industrial scale saws you will find nozzles directed as close as possible to that point under the table. What is not captured at that point and spins round with the blade is usually sucked up by the outlet at the back of the saw.

Richard

That makes sense, but I'm still using the manufacturer's under-sawblade
collection casing because I haven't (yet) managed to devise a better way
to collect the dust at the front and not get in the way of the tilting
arbour.