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Thread: Jet table saw questions

  1. #1
    Join Date
    Aug 2010
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    Madison Lake, Mn
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    38

    Jet table saw questions

    Not sure if I ended up in the correct category or not. I have a JET JWTS-10JF table saw. The saw has some things that could be better. The dust collector underneath is a disaster. It is a "chamber" that kinda funnels towards a 4" opening in the center of the bottom. The problem is that the dust stays put right where it lands and no funneling takes place because the drop angle is too shallow. The bigger problem is the table insert. Because the slot on the table insert is so large, pieces of wood drop down into the chamber and clog up whatever sawdust might have made it to the 4" opening. I can live with the poor dust collector thing but the large table insert could actually challenge living with anything. The slot is so large that anything under ˝" can/may fall through the slot, or may wedge against the blade, or may try to fall thru and exit the saw area at an accelerated rate....it is absolutely SCARY to operate! So I'm in the search for a new table insert. I have found a few zero tolerance table inserts and I have questions. Why aren't all saw inserts zero tolerance...for normal cuts anyway? Why are all the replacement inserts, whatever the size, made of something other than metal? I have seen phenolic laminate, plastic, and wood. How well do they hold up? Does anybody know of a METAL replace table insert for a JET JWTS-10JF table saw? Finally, one last question....what is the size of a "normal" slot opening (width) on a table saw insert when used for normal cutting?
    Ken
    Wood worker wannabee
    W0CSC
    Semper FI

  2. #2
    Join Date
    Jun 2008
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    GTA Ontario Canada
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    Ken, the slot is large to accomodate the fact that the table saw blade when tilted will need more space width wise to tilt and not interfere with the blade.

    people make ZCI's out of many materials and i aint see a metal one yet no need really and they would probably have to be machined to be able to make sure it aint going to contact with the blade. Add to that the issue that should something go wrong and the blade get bent a bit and make contact with metal you will have a bigger problem on your hands.

    I have done some searching for you because there is tons of info on this site on the topic. Its been one of those things i am keen on and thought a thread with many of the links to lots of material on the subject would help.

    Take a look here

    http://familywoodworking.org/forums/...earance+insert

    http://familywoodworking.org/forums/...earance+insert

    http://familywoodworking.org/forums/...earance+insert

    http://familywoodworking.org/forums/...earance+insert

    Lots of good info above. Just remember to consider a blade splitter there are many ways to achieve this but its an important safety device.

    You will see people use all sorts of material.

    One guy that i would ask for specific info is Glenn Bradley. I think he has made a set for each setting on his dado stack and for angle cuts as well.

    The aim of the ZCI is to support the wood for chip out and it of course prevents it from falling down to the bottom.

    Is your dust collection port hooked up or are you refering to the dust not flowing down in a use situation with no dc hook up?

    Once you get the hang of it you will have ZCIs for all sorts of settings. When you cut a blank dont just cut one make quiet a few that way you can easily make the one you want for a specific task at the right time.

    As for blade splitters take a look here i use these so do many others, some use a thin piece of wood others have a metal one or a riving knife

    http://www.microjig.com/products/mj-splitter-steel-pro/

    As normal if you dont feel comfortable check back first and dont do it.
    cheers

  3. #3
    Join Date
    Aug 2010
    Location
    Madison Lake, Mn
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    Excellent!

    Rob - I don't know if there is anymore info possible other than what you have provided! I was hoping that there would be an insert at least smaller than the one I have that would still allow tilting the blade. I'm also happy to hear that inserts do not have to be metal. I guess the ideal situation would be a zero clearance for normal cutting and then use the one I have for blade tilts.
    As for the dust collector problem, I have not been using anything connected to the 4" opening. I was hoping to just set an ice cream pail under the opening and collect what I could but very little drops down into the opening. I'm thinking maybe this winter I can take a look at remodeling the dust collector underneath and have someone bend/weld a bottom with a sharper angle to encourage the sawdust to drop down out of the collector. Of course the real solution is to hook up a dust collector or at least a shop vacuum.
    Thanks again for all the excellent info....exactly what I needed.
    Ken
    Wood worker wannabee
    W0CSC
    Semper FI

  4. #4
    Join Date
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    somewhere east of Queen Creek, AZ - South East of Phoenix
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    Ken,
    I made my own ZCI out of 1/2" plywood. I used the blade to make the cut out for the blade. After fitting the insert to fit the opening I clamped the inset down to it opening and with the saw running raised the blade I then lowered the blade tilted it to 45 degrees and again raised the blade. As for dust collection I have the two bag DC from harbor freight hooked up to the funnel on the bottom and have used some additional 1/4 plywood to seal off the back. It works a lot better then nothing but still not perfect.
    "There’s a lot of work being done today that doesn’t have any soul in it. The technique may be the utmost perfection, yet it is lifeless. It doesn’t have a soul. I hope my furniture has a soul to it." - Sam Maloof
    The Pessimist complains about the wind; The Optimist expects it to change;The Realist adjusts the sails.~ William Arthur Ward

  5. #5
    Join Date
    Jan 2014
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    Providence Forge, VA
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    To have any kind of decent DC you have to have a dust collector and have it connected to the port on the saw. Gravity will not help much with DC. Get a cheap DC from Harbor Freight and you should see a huge difference.
    Earl

  6. #6
    Join Date
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    Location
    Oak Harbor Washington on Whidbey Island
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    3,134
    Ken

    Have you thought of using Johnsons paste wax on the under table dust shoot & also on you table top? Don't use auto wax as it may contain silicon which could cause fish eye in your finish.
    "Forget the flat stuff slap something on the spinny thing and lets go, we're burning daylight" Bart Leetch
    "If it ain't round you may be a knuckle dragger""Turners drag their nuckles too, they just do it at a higher RPM"Bart

  7. #7
    Join Date
    Apr 2007
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    No, not all of SoCal is Los Angeles!
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    Quote Originally Posted by Ken Schweim View Post
    I guess the ideal situation would be a zero clearance for normal cutting and then use the one I have for blade tilts.
    This is pretty much what I do for the bulk of my cutting. I have ZCI's for 90* and usually just use the factory insert for various angle cuts. I have made 45* inserts for that specific angle but, found I rarely used it. Thjis will depend on what you use your tilted blade for; small cutoffs should be controlled and that is why I made the 45* specific insert for a certain project. The bulk of my 45* cuts do not involve cutoffs that are small enough to fall into the throat so I just use the factory insert.

    When I do make inserts I make a bunch. The setup is what takes time, not the making of the ZCI's so make 6 or so. They are a wear part; abrasion from the material being cut will slowly widen the slot until it is not so 'zero' anymore. I set the used ones aside for a time when I am doing something with epoxy (more on this later) and install a new one without hesitation.

    As to the epoxy; when I am using epoxy for something I will take my old inserts, apply a piece of packing tape to the top covering the slot, flip them over and pour excess epoxy into the slot near the front area. when the epoxy cures I can re-cut the slot and have a nice new ZCI to continue to use. My saw worked well with 1/2" BB ply which I end up with scraps of from drawer boxes.

    Click image for larger version. 

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    Depending on your saws format you may need a method to hold the rear area down. I know people who skip this feature but, they have obviously never had an insert launch at them . On one of my previous saws I was able to just leave a little "beaver-tail" and shape it to fit under the rear lip. On another saw I drilled a hole lengthwise in the rear of the insert and installed a roll pin or a stub of cut-off 16d nail.

    Click image for larger version. 

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    For your DC issue, I too am not quite clear. If the spoil won't get sucked out of the saw body, a sharper angle will just force spoil into a hose that already can't deal with it. My guess is that there is no DC and this is just a gravity feed, yes? If that is so, just leave it. Once enough dust accumulates, it will cascade down via gravity like an avalanche; build up, drop down, build up, drop down.

    P.s. Doh! I just realized you already said it was a gravity feed
    Last edited by glenn bradley; 12-29-2014 at 05:04 PM.
    Any sufficiently advanced technology is indistinguishable from magic.
    - Arthur C. Clarke

  8. #8
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    Quote Originally Posted by glenn bradley View Post
    This is pretty much what I do for the bulk of my cutting...
    Glenn,
    You do realize that the message you responded to (and this whole thread) is over four years old?
    Jim D.
    Adapt, Improvise, Overcome!

  9. #9
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    Quote Originally Posted by Jim DeLaney View Post
    Glenn,
    You do realize that the message you responded to (and this whole thread) is over four years old?
    Bwaa-Haa-Haaa! That's what I get for only looking at the dates on the last few posts before diving in .
    Any sufficiently advanced technology is indistinguishable from magic.
    - Arthur C. Clarke

  10. #10
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    Quote Originally Posted by glenn bradley View Post
    Bwaa-Haa-Haaa! That's what I get for only looking at the dates on the last few posts before diving in .
    Still timely for me...making some ZCI's this week and will remember the epoxy tip!
    A man is rich in proportion to the number of things he can afford to let alone. -Henry David Thoreau
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