Replies

1. 
   chenige | May 11, 2006 10:04pm | #1

   Rocklers metal ones fit if you put a couple wraps of electrical tape around them.

2. 
   cadiddlehopper | May 25, 2006 10:40pm | #2

   Does "good" mean metal? Are you using thin wall PVC (drain pipe) or thick wall (Schedule 40, I think)? I used thin wall drain pipe & fittings. Plastic blast gates from Delta & Woodworkers Supply almost fit my PVC. They have tapered nipples. One fits an elbow directly. Duct tape or RTV works for the rest of the joints. Don't forget the grounding wire. Matching hoses to PVC can be a problem also. Amazon sells a puny hose (~$35 for 50 feet) which fits over pipe, not fittings, perfectly. Being very flexible, it may cause a slight pressure drop.

   Cadiddlehopper

   
   

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   Edited 5/26/2006 7:24 pm ET by cadiddlehopper

3. 
   Mrhermit | May 26, 2006 06:20pm | #3

   If you are going to use metal blast gates, you might want to check out the ones sold buy Penn State Industries.
   http://www.pennstateind.com/store/lrmset.html

   Take a look at the Long Ranger Multigate System. I have this setup and it is nice to just open the blast gate at the machine you are using to turn on your dust collector.

   You may be able to also find them at Woodcraft and Rockler. I bought mine from Hartville tool. If you are a member of the WoodNet Forum, you can get a 20% discount on them until midnight June 5th.
   http://www.hartvilletool.com/product/11463

   
   

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   Edited 5/26/2006 11:23 am ET by Mrhermit

4. 
   DougF | May 26, 2006 10:11pm | #4

   Without knowing anything about your intended setup, 4" pvc for the main lines will restrict material flow (CFM) compared to 5" main lines.  Five inch sewer line is readially available.  Try to reduce the amount of flex hose to the absolute minimum run since flex creates a lot of turbulence, increases fricition and reduces the CFM.