Thread: Vacuum&pressure pot experiments

I suppose it should help but I can't help but think it that the best long term solution is to plumb the exhaust air back into the building and filter it with the two four foot long hepa filters that I keep tripping over. I need to get some tin work made, and we are a little light on those services here. I never really give it too much though until it gets cold out.

Originally Posted by RezDog

I never really give it too much though until it gets cold out.

That sounds a lot like myself.

But then I just looked and it isn't even cold there!

I converted our house's old Electrolux central vac into my dust collector in the basement. Disconnected all the original house duct work and ran a new line to a cyclone separator bucket then to the hose I move machine to machine as required.
Works well and I barely hear anything inside, but the neighbors hear the head unit in the garage so I don't use it after ten pm.

The problem with ducting cold air in and near the exhaust would be it would reduce the effectiveness of the system for its primary use. So like if it's a 650 cfm exhaust fan and you supply 400 cfm of outside air to its inlet side, it'll only remove 250 from the room. At least that's the way I figure it.
Ideally, recirculating the room through a hepa or bag set up would be the best for heat preservation but I don't like a noisy shop so went with my remote blower idea and pay the gas bill accordingly, lol.
I tell the wife the gas bill went up cause of drafty windows, so moms the word gents...

I don't think that my idea would reduce the dust collectors overall effectiveness.

Use a table saw for example. The dust collector sucks from under the blade. I am sure that everyone here uses an anti kickback guard over the blade..... Drill holes through the guard and build some kind of adapter for a flexible fresh air intake duct at the top of the guard. The cold air would enter at the top of the blade and exit at the bottom one foot or so away only cooling that part of the room.

Just another of my random thoughts!

That's true and yup, think you are right, if the cold air is above the saw, totally would work as you suggest.
Was thinking more about the math than the physics,

Got some time on the saw after soaking the main piece of tusk in mineral oil.
I thought it prudent to hot melt the tusk to a heavy piece of ebony prior to trimming. Give me something solid to hold and steer.

Then to the saw.


Stinky, even with the dust collector going.
5 sets made, inclusions and flaws not withstanding.





They seem solid enough despite the flaw running through all of them. I intend to try to make some scales out of them. And have a bunch of sets for the tusk owner as well.
Cheers and happy new year men. Time to get some drinky after gettin stinky!

Very, very cool Mike. Great idea gluing it to the wood to keep all your cuts parallel.

Great looking stuff Mike
Looks like Mammoth

Looks great my friend and now fellow Mentor!

You had spoken of modifying the stock fence but the pics don't seem to show any mods, if you could expand it would be very much appreciated

All I ended up doing was adjusting the rear lock tab nut a bit on the rear of the fence and checked my parallelism to the blade at the corners.
That and covered the centre knock out with three layers of Teflon tape to eliminate the slight step around the blade itself.
Used the 18 tpi x 3/8 blade and it worked a charm as far as straightnes of cut is concerned.
Really like the skil mini band saw indeed!