Routing a Dust Collection System

[boilermanc]

I read through several of the threads on this but did not find exactly what I was looking for. I just purchased the pipe setup for dust collection system. I am mounting it behind the wall where the tools are. It has hoses that connect the pipe to the tool. I will be running the pipe up and out through the attic to a lean to against the house where I will run the vacuum.

My question is, should the pipe be mounted low on the wall just above the tools or high on the wall along the ceiling with just the hoses coming down to the tools? I didn't think it mattered but then I found some videos and with all this information about suction levels, humidity, distance, angles etc. You can see it here. This is pretty... technical!

It all made sense that that would matter but wow, it was alot to try to figure out. So just starting with what I hope is a basic question.

thanks!

 

[Elmo4895]

Visit this site and learn more than you will want to know about dust collection systems! http://billpentz.com/woodworking/cyclone/cyclone_mods.cfm

 

[beakie]

if you are installing behind walls, and you will possibly use it for sawdust (or any dust really)
ensure it is has a ground wire running inside or built into the duct work. don't quote me, but I believe the dust will, or could, ignite from a spark from the static electricity buildup just from the moving particles.

may also want a way of back blasting the lines, or removing large solid if any become lodged in lines.
after renoing my old houses basement, I found a few kids toys, etc in the centralvac lines I removed.

 

[Nowater]

The analogy to a water hose is fairly accurate. Friction fights the flow, and friction increases with velocity. For any given water flow (air flow) the smaller the pipe, the faster the flow, and thus the higher the friction. Also, the longer the pipe and the more elbows, turns, and fittings, the higher the friction. If you filter the air before it is discharged, think of the filter as adding friction, even though this is not completely accurate, it is one way toward understanding the system.

Wood dust needs a minimum velocity to stay suspended in the air flow. If I recall correctly, wood dust needs a velocity of about 4000 feet per minute, but that is only based on a guess that you are using the dust collector for wood dust. If you still have questions, please provide some more information like pipe size, length, number of fittings, filter type, and motive force.

 

[boilermanc]

Visit this site and learn more than you will want to know about dust collection systems! http://billpentz.com/woodworking/cyclone/cyclone_mods.cfm

Excellent! Thanks!

 

[boilermanc]

if you are installing behind walls, and you will possibly use it for sawdust (or any dust really)
ensure it is has a ground wire running inside or built into the duct work. don't quote me, but I believe the dust will, or could, ignite from a spark from the static electricity buildup just from the moving particles.

may also want a way of back blasting the lines, or removing large solid if any become lodged in lines.
after renoing my old houses basement, I found a few kids toys, etc in the centralvac lines I removed.

those are two good points that i had read about, static electricity and being able to clean out the lines. I just have to go through a ceiling into an open attic but yeah, i need to draw this out for sure...