I got the go-ahead on upgrading my shop DC from a Delta portable 1.5HP to a dedicated/installed DC. I'm leaning heavily towards the Oneida 3HP Dust Gorilla Pro. Regardless of the DC I select though, I'd think my ducting will be the same. I'm planning to use spiral duct and need some help on the transitions and fittings.
Shop/Tool info:
- Shop = 20' x 30' (10' ceiling) with additional 10' x 10' shoulder for storage
- DC will go in another 10' x 10' room on the outside of the 10' x 10' shoulder that's part of my shop (2x4 insulated wall between shop area and DC area)
- SawStop Professional (currently only collecting dust at base but plan to install over-blade collection as well)
- "Floating" tool. I have a 18-36" Performax sander currently and a Delta shaper. I'll eventually get a planer and jointer to add to the mix. All of these will be on mobile bases as "floating" tools and will be wheeled to a central area in the shop while in use.
- Miter saw (see below on questions)
Dust Collection Duct
- The main trunk line of the DC will run ~25' along ceiling before getting to table saw
- The trunk will extend beyond table saw another ~10' to where it will drop down for the "Floating" tool connectio
Questions:
- Best to transition from the DC cyclone input to 8" duct for the main trunk?
- If 8" trunk to table saw split, should the trunk extending beyond to the "Floating" tool be 8" (for the 10' run) or go ahead and run it as 6"?
- OK to transition from 8" to 6" for the drop to the table saw and the "floating" tool?
- OK to use non-spiral fittings? Local supplier said they can get spiral Wyes and elbows but very expensive, whereas a non-spiral fitting is more affordable
- Local supplier has 8" to 2 6" wyes (so I think it has 8" coming in and 2 6" arms coming out), but should I be looking for a fitting that's 8" with a 6" off-chute (I believe that's a wye as well)
- Is a 1 1/4" radius 90 elbow a no-no? A supplier has those but I know the larger the radius, the better
- Connect miter saw or not? I know it'd be good airflow to use the big DC but my use of the miter saw is often one or two quick cuts and that's it. Seems overkill to fire up a big cyclone for that. If I don't connect the big one, I'll likely use my Delta 1.5 for the miter saw.
I'm sure I'll have more questions but that's my starting point for now.
Thanks