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Any bright ideas on how to open blast gate behind saw?

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Forum topic by Jackietreehorn posted 06-17-2014 06:43 PM 1641 views 0 times favorited 30 replies Add to Favorites Watch
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Jackietreehorn

150 posts in 1406 days


06-17-2014 06:43 PM

In my previous setup I used a couple long rods and basic fulcrum points. In my new setup, the gate is now directly behind the saw so I have to make my levers work around a 90 degree corner. This is all I could come up with in a rough sketch, basically a notch that is angled that directs the other arm to move… Probably take me a while to build it while I scratch my head along the way. Thought maybe someone had some other way that would save me a lot of r&d. Thanks in advance!

As you can see my table is a bit big so there’s no easy access from left or right of saw

-- www.nobleprojects.blogspot.com


30 replies so far

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DLCW

530 posts in 2122 days


#1 posted 06-17-2014 07:31 PM

Put it further up the line towards the DC. I have a setup similar to what is pictured and my blast gate is at eye level and easy to get to. After the gate is a splitter that goes to the main dust port at the bottom of the cabinet saw and the other goes to a smaller hose attached to blade guard with dust collection built in.

-- Don, Diamond Lake Custom Woodworks - http://www.dlwoodworks.com - "If you make something idiot proof, all they do is make a better idiot"

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Don W

17971 posts in 2035 days


#2 posted 06-17-2014 07:33 PM

I hope you come up with something. I’m tired of reaching behind the saw!

-- Master hand plane hoarder. - http://timetestedtools.net

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Elizabeth

814 posts in 2611 days


#3 posted 06-17-2014 07:35 PM

What are you connecting at the gate – a flexible hose, or a rigid pipe?

Where does that pipe/hose go to? What about leaving the gate on the saw open, and installing another gate at an accessible point in the pipe/hose run? On my shop the table saw dust port is also on the back of the saw. From the port I ran a few feet of flex hose to get round to the front right corner of the table, then a run of metal pipe goes straight up to the ceiling, and the blast gate is about shoulder height on that pipe. One of my shop photos shows it.

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Don W

17971 posts in 2035 days


#4 posted 06-17-2014 07:45 PM

before I got my cabinet saw, I had this old craftsman, see the threaded rod is attached to the door on the blast gate. Pull to open, push to close.

-- Master hand plane hoarder. - http://timetestedtools.net

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Jackietreehorn

150 posts in 1406 days


#5 posted 06-17-2014 08:10 PM

Because of room behind saw, the gate will have to be attached to saw, then a small section of flex, maybe a foot long and then to rigid pipe. The gate can’t go anywhere else, mainly cause I wasn’t planning on upgrading collection system when I started to design the new table. If I put it farther down the line it’d cut off the router table, or both saw and router would be open at same time.

Once I started building new table I started reading more about dust collection and decided to upgrade which means shoehorning a lot of stuff in limited space. Had I thought about it prior the story would be much different. Big doh! On my part.

-- www.nobleprojects.blogspot.com

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waho6o9

7179 posts in 2044 days


#6 posted 06-17-2014 08:15 PM

Maybe wire cable on each side of the saw, one to open and the

other to close.

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MrRon

3927 posts in 2711 days


#7 posted 06-17-2014 11:34 PM

If you can find a choke cable at your auto parts store, you could rig it to open/close the blast gate with a push/pull action. Once you have the choke cable, it will become obvious how to rig it. http://www.summitracing.com/search/part-type/choke-cables

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Tony_S

607 posts in 2550 days


#8 posted 06-18-2014 12:19 AM

pneumatic is the way to go of your mechanically inclined.

You can buy them pre made, but they can get pretty pricey.

-- It is the mark of an educated mind to be able to entertain a thought without accepting it. Aristotle

View Jackietreehorn's profile

Jackietreehorn

150 posts in 1406 days


#9 posted 06-18-2014 12:28 AM

Pneumatic sounds neat for cool factor, I can imagine parts could add up though. I like the cable idea, but was hoping to not spend any $$ if I can help it cause I blew budget from get go. I’ll call my hot rod buddy and see if he’s got extra cable somewhere.

-- www.nobleprojects.blogspot.com

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MT_Stringer

2854 posts in 2698 days


#10 posted 06-18-2014 01:02 AM

@Tony. I like the air cylinder idea. Very nice. Luckily for me, I only have two blast gates and they are both within easy reach behind my saw.

-- Handcrafted by Mike Henderson - Channelview, Texas

View Steve Peterson's profile

Steve Peterson

325 posts in 2550 days


#11 posted 06-18-2014 03:27 AM

How about moving the blast gate further downstream? Is there another location that provides better access?

-- Steve

View TheFridge's profile

TheFridge

5765 posts in 953 days


#12 posted 06-18-2014 03:38 AM

I wonder if a bicycle hand brake would work. You could spring load it fairly easy.

-- Shooting down the walls of heartache. Bang bang. I am. The warrior.

View William Shelley's profile

William Shelley

151 posts in 937 days


#13 posted 06-18-2014 08:24 AM

I really like those pneumatic ones… and small air cylinders like that are a dime a dozen on ebay. The fittings are what come around to bite you though. A few bucks each doesn’t seem like much but it adds up quick.

-- Woodworking from an engineer's perspective

View mudflap4869's profile

mudflap4869

1158 posts in 926 days


#14 posted 06-18-2014 12:26 PM

Just don’t do half measures, it costs more in the long run. A small can for each project. Add a few coins to each when you empty your pockets. I have bought some great tools that I otherwise could not afford by using that system. Never leave the house with coins in your pocket.

-- Still trying to master kindling making

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ChrisK

1809 posts in 2549 days


#15 posted 06-18-2014 12:48 PM

Jackietreehorn,

Check out http://www.surpluscenter.com/ for the various pneumatic bits.

A few hours of tinkering should get what you need. An electric solenoid and a spring might also work.

-- Chris K

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