|Project by toddswenson||posted 07-26-2012 07:57 AM||5923 views||17 times favorited||9 comments|
I wanted to share a design for integrating an Oneida Dust Deputy and a shop vacuum.
I got part of this idea from a picture I saw on the Oneida web site a couple of years ago (since taken down). I like it because it is compact and keeps the otherwise unwieldy mess from flopping around.
My big insight is that you don’t actually need a super vac to run the cyclone. Since the cyclone and bucket collect virtually all of the dust, the dust bin on the vacuum itself is almost rendered unnecessary. So why use a 6 or 16 gallon shop vac when the smallest size will do? Also, I knew from experience that my 6 gallon shop vac (3 HP, 143 CFM) was plenty strong enough to run the cyclone.
So I bought a $30 shop vac from Lowes (2.5 gallon, 2.5 HP, 130 CFM) and rigged up this cart, which is made out of a quarter sheet of ½ inch plywood. The vacuum is mounted on its side in order to get a smooth hose run from the intake port to the top of the cyclone. I used screws and nuts to bolt the bottom of the vac to a piece of wood that acts as a cleat to mount it to the cart. Because wet/dry shop vacs have a float that protects the motor from water, I disabled this feature by cutting out the float. Otherwise any slight tilting and the suction could be lost.
The cart is put together with pocket screws, although any type of joinery could be used, and if it was made with ¾ inch plywood the butt joints could be screwed together directly. I used ½ inch ply because it was lighter and cheaper. The casters are just reused from those supplied with the shop vac. I used the ShopVac 3 piece adapter kit to make the transition from the 2.5 inch hose to the 1.5 inch that attaches to the vacuum. I had to soften the larger hose in hot water a bit to get it to stretch over the adapter.
The cyclone assembled this way works great. It has plenty of suction to collect chips and dust from a router, a chop saw, or even a 6 inch jointer. The only thing I don’t like about it is that the on/off switch of the ShopVac is a little difficult to use, but I am in the process of replacing it with a toggle switch.
Hope you find my idea useful.
-- Todd Swenson