WoodCentral Forums

Est. 1998 — 27 years of woodworking knowledge

Over the blade dust pick up question????

Posts

Over the blade dust pick up question????

#1

Over the blade dust pick up question????

Barry Irby

I have a Rockwell Contractors saw (think Delta) from back in the day. About fifteen years ago I added dust collection. I made a "shroud" that surrounds the blade below the table and is hooked to the DC through a four inch line. It works very well most of the time almost eliminating the dust coming off the top of the blade. I can tell from the wind on my face if I fail to turn it on. Don't want and over the blade pickup because my shop is small and already an obstacle course. Now that you have some background....

The other day I was ripping some 2" thick oak with a Freud Glue line rip blade. The blade was set about a tooth about the wood. It was spewing dust so badly I checked to be sure the DC was on, then checked to see if it was stopped up and then checked again. Finished that, lowered the blade, and went back to ripping one inch stock and the problem went away. At least 90% of it did and the blade was only spewing about 10% as much as with 2" stock. This is the only time I thought I really need and over the blade pickup. So, what's the deal? Does the thicker stock not allow the dust to exit the gullets on the bottom? (It's a ten inch blade)

Re: Over the blade dust pick up question????

#2

Re: Over the blade dust pick up question????

Dick Coers

Two things come to mind. Tooth set in that blade style, and stresses in that wood causing a slight side pinch in the kerf.

Re: Over the blade dust pick up question????

#3

Re: Over the blade dust pick up question????

roger lance

Since your dust problem is so significantly reduced with thinner stock than 2"......what would happen if you made a couple of passes when cutting 2"......the first pass at 1 1/2" depth.....then cut that last amount??

Re: Over the blade dust pick up question????

#4

Re: Over the blade dust pick up question????

Pete in Holland MI

Check the alignment of your blade as it is short, and standing tall. It might be out of alignment with the table, causing more cutting on the back end. Verify your fence is square too.

Yup.......dust out the top is a problem with mine too.

Re: Over the blade dust pick up question????

#5

Re: Over the blade dust pick up question????

Brian from monument colorado

Could be the 2 inch material is producing too much dust for the 4 inch line to handle it.

If a slower feed rate permits it to keep up then you might have overwhelmed the 4inch line.

Most DC discussions revolve around 5 inch lines for table saws.

Re: Over the blade dust pick up question????

#6

Jack Guzman from Maine

don't bother

Jack Guzman from Maine

I have the same issue when I cut thick material with my tablesaw. I have a vacuum that collects most of the debris from my saw but it doesn't work well with thick stock. However,I don't cut thick stock very often so I live with it. My suggestion is if you don't plan on cutting alot of 2" stock, let it be.

Re: Over the blade dust pick up question????

#7

Re: Over the blade dust pick up question????

John McGaw

My Robland came with over-the-blade dust collection capability but it proved to be a PITA most of the time so I blocked up the ceiling dust-collector port that I had installed for it and just put up with the occasional bit of blown dust. It isn't as if my shop is every going to be clean-clean.

Re: Over the blade dust pick up question????

#8

Re: don't bother

Buckaroo

Builded/constructed/made underneath, a sloping dust/etc. four sided deep/tall/long THING to funnel ALL the chips from TS BLADE to 5 HP dust collector,OK. Caulked every opening under the TS's top so only air the dust collector could get was from blade opening. WORKS PERFECT. This prolly aint understandable as I went thru 6th grade, but needed to thro this in.

Re: Over the blade dust pick up question????

#9

Jack Guzman from Maine

I had no problem understanding you


Re: Over the blade dust pick up question????

#10

Re: don't bother

Barry Irby

I looked at that idea, but my saw is a contractors saw and the entire back side is open. Looked at blocking most of it off, but the motor swings to make bevel cuts and I knew I would HATE having to remove the cover every time I wanted to make a bevel cut. So I enclosed the blade in what could be a cereal box and brought the duct out the front so the blast gate would be near the switch and easy to reach. In spite of the fact that mine is only a 1 1/2 hp dust collector it works really well getting at least 95% of the dust, except this time when the cut was really deep.

I considered suing a shop vac to suck the dist out of the gullets at a 90 degree angle or maybe a nozzle from the air compressor to blow it out, but it generally works well enough that I quit scheming.

👍 This page answered my questions

Your vote helps other woodworkers quickly find the answers and techniques that actually work in the shop.