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post #1 of 8 (permalink) Old 01-01-2009, 09:02 PM Thread Starter
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Default ZC Insert

My present home made ZC Insert for my 10" table saw is 3"x 10" long (1/2" MDF).

The saw kerf is located in the middle of the Insert and most of the pictures I have seen they have it closer to the right edge of the Insert. Is there a reason to have the kerf closer to the right?

Also the length of most insert I have seen on the Web varies from 12" to 14". Even with a 12" blade why to have the Insert 14" long?

Are any guidelines / suggestions to make a ZC Insert

Thanks
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post #2 of 8 (permalink) Old 01-01-2009, 09:12 PM
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i think your saw will dictate where the kerf is, you have no control over that. as far as the length, you want the kerf as short as possible but not interfere with the blade. if you lower the blade for thinner material, more of the kerf will show.

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post #3 of 8 (permalink) Old 01-01-2009, 09:18 PM
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Hi kolias

You can make your own easy, just stick the one you have to some clean 1/2" thick MDF, use a trim router bit in the router table and go around the one you have..

Once you have the blank made press in into the hole then move the fence over the new blank but not to far, then move the saw blade up , when the blade just sticks out about 1 1/4" high..stop. the norm ,, you don't need to lift the blade all the way because you can't use it for angle cuts anyway..

The blade can be to one side or the other but once the blank is in place the blade will select the right place for the blade to run..

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Originally Posted by kolias View Post
My present home made ZC Insert for my 10" table saw is 3"x 10" long (1/2" MDF).

The saw kerf is located in the middle of the Insert and most of the pictures I have seen they have it closer to the right edge of the Insert. Is there a reason to have the kerf closer to the right?

Also the length of most insert I have seen on the Web varies from 12" to 14". Even with a 12" blade why to have the Insert 14" long?

Are any guidelines / suggestions to make a ZC Insert

Thanks



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post #4 of 8 (permalink) Old 01-01-2009, 09:47 PM Thread Starter
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Thank you,

Perhaps I did not elaborate enough. The table top is also home made (27"x 44" x 2 times 1/2" thick MDF glued together). Now I'm making a larger top (27"x 48"). My questions:

Is there a reason for the kerf not to be in the center of the ZC Insert? Dont forget that I can locate the new Insert anywhere I want.

Why most of the Inserts are 14" long? is there a reason?

Thanks again
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post #5 of 8 (permalink) Old 01-01-2009, 09:51 PM
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No reason for not centering yours. You do need enough room to get to the saw blade and 14" is a good number that works, but not required.

It works because it is big enough to get at the blade, but small enough for the cut piece to still be referenced off the table and not the insert.

Last edited by dovetail_65; 01-01-2009 at 10:00 PM.
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post #6 of 8 (permalink) Old 01-01-2009, 09:55 PM
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as bobj said, you only need to raise the blade about 1 1/2 inches high. this height will determine the length of the kerf. i make my own inserts but dont measure the length or worry about the length of the kerf. i am not an expert, but if i were building a top and the insert i have been using worked fine, i think i would make the new top like the old one with regard to the kerf in the insert. it seems to me it would make building the new one easier.

ps, the only reason i can think of for the kerf being to one side or the other is the blade tilt and if its a right or left tilt saw.

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Last edited by levon; 01-01-2009 at 09:57 PM.
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post #7 of 8 (permalink) Old 01-01-2009, 10:08 PM
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kolias,

you also need to consider if you will use a dado set on the saw. if so you will need room on the outer end of the arbor to place the blades and access the arbor nut easily, am i making sense?

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post #8 of 8 (permalink) Old 01-01-2009, 11:17 PM Thread Starter
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Levon I think you are right

Never thought about it but it makes sense. As a matter of fact I never used a dato blade but I was thinking to get one in the near future. These blades are fairly thick and so I will leave enough space on the arbour side to be able to handle one.

I'm not an expert either but I'm sure that is the reason the kerf is off center.

Thank you all
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