LumberJocks

ShoP Vac for Dust Collection, and adapting to a small opening...

  • Advertise with us

« back to Power Tools, Hardware and Accessories forum

Forum topic by Kelemvor posted 01-02-2018 04:43 AM 1847 views 0 times favorited 3 replies Add to Favorites Watch
View Kelemvor's profile

Kelemvor

1 post in 170 days


01-02-2018 04:43 AM

Howdy,

I have a Craftsman shop vac (4.25 HP) that is my only source of dust collection. It uses a standard 2” hose and I have it connected to a Dust Deputy to filter out everything before it gets to the actual vac. I have to move it around and dis/reconnect hoses and all that fun stuff. I’m debating two things.

1) Is this shop vac powerful enough to put it in one place and run PVC to the various areas I need to collect dust from? This would primary be 3 things. Table Saw, Miter Saw, and an aux port that I can use for a sander or something like that.

2) My random orbital sander is a Makita and it has a very small 5/8” ID (7/8” OD) port for the little bag thing to push onto. It doesn’t do a very good job so I want to be able to connect this to the shop vac. Assuming I can find or make some adapter to go from 2” down to 5/8”, do I need to be concerned since it will be trying to pull so much air through such a tiny opening? I don’t want to burn out the shop vac motor or anything like that. Would it be best to drill some small holes on the end near the sander so it can pull air in from multiple ports so it has an easier time? Looking for any recommendations on the best way to do that.

Thanks!


3 replies so far

View Bob5103's profile

Bob5103

88 posts in 858 days


#1 posted 01-02-2018 08:43 AM



Howdy,

I have a Craftsman shop vac (4.25 HP) that is my only source of dust collection. It uses a standard 2” hose and I have it connected to a Dust Deputy to filter out everything before it gets to the actual vac. I have to move it around and dis/reconnect hoses and all that fun stuff. I m debating two things.

1) Is this shop vac powerful enough to put it in one place and run PVC to the various areas I need to collect dust from? This would primary be 3 things. Table Saw, Miter Saw, and an aux port that I can use for a sander or something like that.

2) My random orbital sander is a Makita and it has a very small 5/8” ID (7/8” OD) port for the little bag thing to push onto. It doesn t do a very good job so I want to be able to connect this to the shop vac. Assuming I can find or make some adapter to go from 2” down to 5/8”, do I need to be concerned since it will be trying to pull so much air through such a tiny opening? I don t want to burn out the shop vac motor or anything like that. Would it be best to drill some small holes on the end near the sander so it can pull air in from multiple ports so it has an easier time? Looking for any recommendations on the best way to do that.

Thanks!

- Kelemvor


I use a 2” ducted/blast gate central vacuum for my miter, router table, drum/oscillating ROS, drill press and shop clean-up. Central vacs are rated differently so I don’t know how they compare to shop vac but I am very pleased with my system. Personally I wouldn’t use it for a table saw unless it is a smaller saw set up to use a 2” port. I use a separate DC for my stationary tools. Both Rockler and Woodcraft sell the blast gates. When I use my ROS I crack a blast gate “up stream” to prevent my sander from getting sucked into the work piece. It creates “pig tails” in the sanded wood that are really irritating to when you have to re-sand. Here are a couple of pics of some of the vac and some of the duct. I have had this setup for about 2yrs now and have yet had replace the expensive hepa filter in the vac.

View rwe2156's profile

rwe2156

2964 posts in 1505 days


#2 posted 01-02-2018 04:10 PM

Of course it can be done, but a shop vac does not generate the CFM’s to collect machines like a tablesaw very effectively. IIRC you need a minimum of 350CFM at the machine for decent collection.

I think a miter saw can be very effectively collected with a shop vac, as well as a router, ROS, spindle sander.

There are various adapters that can help get you connected.

If you want to go with a ducted system, you’re looking more on the order of a 2HP blower and 6” ducting.

-- Everything is a prototype thats why its one of a kind!!

View Sark's profile

Sark

74 posts in 385 days


#3 posted 01-02-2018 04:31 PM

You’re shop vac won’t work well for table saw and chop saw especially after running through ducting. The big tools put out huge amounts of sawdust, so you need a vacume system that sucks a lot of air. There is a fundamental difference between shop vacs and dust collectors. Shop vacs typically generate high suction pressure at low volume, and dust collectors pull huge volumes at relatively lower pressure levels.

Your “4.25 HP” sears vacume is maybe 1/2 to 3/4 HP for continuous duty, And your small diameter, low powered dust-collector system isn’t going to work with table saw and ducting. I refer you to Grizzly for price and size of dust collectors that could do the job for you.

Have your say...

You must be signed in to reply.

DISCLAIMER: Any posts on LJ are posted by individuals acting in their own right and do not necessarily reflect the views of LJ. LJ will not be held liable for the actions of any user.

Latest Projects | Latest Blog Entries | Latest Forum Topics

HomeRefurbers.com