Good day
Looong time ago, I posted 2 posts about converting home-vacs to shop-vacs...
http://www.sawmillcreek.org/showthread.php?t=38174
http://www.sawmillcreek.org/showthread.php?t=37867
Please have a look at those posts before you continue so will know what I'm talking about....
Well, I got tired to open the vac every now and then just to clean the "pre-filter"...
On the example I vacuumed some 7~8 Gallons of dust in one "shot" and you can see the results.
The small modification was so good that I made it also the other shop-vac and now, I don't have to take out and clean the "Filter" for very long time (till the barrel is almost full).
The "Hammer" gives me also an indication when the barrel is almost full...if it doesn't return down to it's original position, it means that "time to empty the bucket"...
Regards
niki