Spindle sander dust collection.
We have a triton oscillating spindle sander (big orange plastic case) that normally sits out of the way under a bench and taken out when needed, it takes up too much room and sits too high, the DC connection is via a 35mm outlet into a larger sealed plastic channel mounted on the underside of the cast iron table that pulls air/dust into the spindle opening, it’s a pain getting it out, fitting the VC to the back and rigging up a 150mm pickup for a top pickup every time I want to use it, which is increasingly more often now, so I decided to try and fit it permanently into our moveable table.
In this triton sander all below table dust must be isolated from the motor and electronics in the lower housing, there is very little room between the bottom of the iron table and the top of the sanders mechanical components, there is also limited space to do anything else but open up the end of the 35mm DC connection. The width of the feed channel is however around 80mm, so I grafted a plastic tube onto the end of the housing to accept a short length of 75mm flexible DC hose.
I placed a 150mm port for above table extraction into the table top close to the sanders cast iron top. As any fitting is simply pushed into the tables 150mm opening, it allows any manner of DC hood to be used or tested. A 75mm connection is made into the 150mm DC pipe below the table and connects into that modified pickup on the underside of the sander. I was initially worried that the 75mm mod and limited intake area around the base of the sanding sleeve may have been a problem with a LP DC with most intake capacity being used by the above table pickup, however it worked perfectly as the above table pickup really does the bulk of the work.
http://www.brisdance.com/Wood/SPsander/Oldnewport.jpg
I enclosed the motor, spindle assembly and electronics to keep dust out and also allowed for plenty of ventilation for motor cooling, I also mounted the sander switch to the front of this under table compartment.
The 150mm table opening can be capped when using the rest of the table for other tasks or can have a different dust hood directed anywhere if using it with other hand tools.
NOTE – the pickup in the picture is an old butchered piece of 90 deg that I had laying around and used for a quick test, it worked really well as is, even with our 3HP DC having lost over 3” of vacuum AGAIN due to the dam restricted filter bags – and with very little wood working done.
I’m thinking a proper bell mouth here will be all we need for most work.
http://www.brisdance.com/Wood/SPsander/Partbuild1.jpg
http://www.brisdance.com/Wood/SPsander/Partbuild2.jpg
