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The capacity is quite good and you can use the saw quite a bit before having to empty the bag. I am puzzled at some reviews that knock the product for not comparing favorably to a true dust collection system.
Contrary to some reviewers, I have not found the bag to significantly restrict output airflow.At home I use a dust collection system, but on the road this bag works well and saves cleanup time at the end of the job. I use the bag on a Bosch 4100-09 unit and use both the stock and zero clearance inserts.
After using this dust bag for months now, I am pleasantly surprised at how much dust the bag actually collects. Of course not, and it would be unreasonable to expect that it would.
I think if you keep your expectations reasonable, you will be satisfied with this dust bag. In fact, it works better than I thought it would.
Does the bag collect as much as a shop vac attached to the saw or a dust collection system.
Disappointing. This dust collection bag captured a good portion of the sawdust, but creates too much resistance to airflow, causing sawdust to blow back in your face. I had to take it off.
The bag also plugged up at the next job when I was just doing general cross cut work in poplar and oak. Thought I would give this bag a try as I was purchasing a few other items on Amazon and take advantage of the free shipping offer. Save your money and dont buy this Bosch accessory. Probably need to purchase one of those canister type dust collectors. The Bosch table saw that the bag attaches to is great, the bag is not. When ripping a 2 X 4 the chips just plug up in the bottom of the saw as there is not enough flow into the bag.
I found that the blade I was using made some difference too - a 40-tooth blade sent more dust down the chute and into the bag than an 80-tooth blade. The problem lies more with the Bosch tablesaw, which doesn't direct all the dust down the chute - for that to happen, the saw would need a major redesign. The current design simply has a channel under the blade leading to the chute in back, but it's open, so the spinning blade kicks dust in every direction, not just down the channel and chute. For the cost of this bag, you're not going to get a dustless system. The latter probably makes finer dust, more prone to being scattered. I found after a few dozen cuts the bag filled up, but there was plenty more dust under and all around the saw base. It certainly doesn't collect all sawdust, but it catches a good part of it. But what the bag caught was that much less for me to vacuum, so I'm happy with that.
The zipper bag is easy to empty and the volume is just right for a days work. I am usually working in homes for remodeling and this dust collector makes end-of-day clean up a lot easier. Can't find any fault with this item - wish I would have known about it sooner. Super solution to a nagging problem. I found this dust collector just right for my contractor saw.
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