Kapex dust extraction not up to snuff

[worldburger]

So, when I arrive at this stage of engagement, I usually put up the FWIW moniker because it means I'm probably starting to drift into the engineering netherworld which is great food for the engineers but boring for the mass populace. My wife just looks at me and scowls [tongue] and then tries to turn the discussion to golf.  [big grin]

So FWIW...I've been putting in some pvc plumbing and after cutting many 1 1/4", 1 1/2" and 2" sections of pvc, this is the amount of dust on the Kapex. This is pretty incredible considering what happens to positively charged tools and negatively charged pvc particles.

Cheese, tell me about the white zero clearance insert, please

 

[RKA]

[member=22929]worldburger[/member]
I believe that's the colliflower zero clearance insert available at woodcraft.  If the link below doesn't work just search woodcraft's site for colliflower.

https://www.woodcraft.com/products/colliflower-zero-clearance-insert-kapex-miter-saw?gclid=CjwKEAjwxurIBRDnt7P7rODiq0USJADwjt5DukPgVyK6Ctvn84xZ4e3RRgRERqNH4dP4pjbEeSBJzhoCWIfw_wcB

 

[worldburger]

This past weekend, I added the zero clearance insert (Betterly) made an auxilliary fence.  I had a sheet (yes you can buy 4x8 sheets now at Orange box store) of 1/2 Azek PVC left over from a project for an outdoor trailer, and decided I'd use it.  Planed it down to 10mm so the clamp foot would clear, and did roundovers on the outside edges.  Came out nice and won't be affected by moisture in any way, but boy it was a mess to clean up in my planer. 
Anyway, after adding these two things, I was pleasantly amazed how much the dust collection improved over not having the aux fence.  If you're worried about dust and haven't made one yet, add a fence. Doing this also totally  eliminated any tearout on cuts.

Fig (or anyone else), how does the aux fence assist in dust collection? This has perplexed me!

I believe that's the colliflower zero clearance insert available at woodcraft.

Thanks, Raj!

 

[fignewton]

Because the opening in the aux fence is only blade-width, it keeps dust on the front side of the fence rather than shooting through the larger opening.  When the head of the saw is pushed all the way rearward, it then collects this dust easier via the vacuum shroud.  That's my theory... at least I know it makes a big difference.  Even my son, using the Kapex for the first time, was amazed at how little dust there was after cutting 9 inch wide walnut.

 

[Cheese]

Cheese, tell me about the white zero clearance insert, please

Yes, [member=22929]worldburger[/member] , RKA is correct. The zero clearance insert is manufactured by Colliflower. It consists of an aluminum frame and individual pvc inserts. It works well and the inserts are cheap...less than $3 each.
http://www.colliflower-zci.com/all-products/cesxelcmpbnx4u1xrej2t5gqlbd5jb
http://www.colliflower-zci.com/all-products/nks5s4oahm29tifq57bwvz9bl1u5kk

I also made and installed an aux fence made from 10mm baltic birch, that also helped dust collection.