Implications of a warped zero clearance insert?

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Forum topic by mcg1990 posted 02-26-2015 02:11 AM 775 views 0 times favorited 6 replies Add to Favorites Watch
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159 posts in 1262 days

02-26-2015 02:11 AM

A while back I made a post regarding rattling/grindy noises coming from my Craftsman 22124. I’ve been too busy to attempt all of the tuning suggestions that were put forward, but I have noticed something new – the zero clearance insert sags into/around the blade.

I wonder if anyone could quickly educate me on any problems this may cause, and where to look for a new one?

Another problem I have is that the gap between the blade and the insert is so large that often when I’m ripping small strips off of stock (say, taking 1/8 off either side off construction lumber to remove the bevel) the slithers will slip down beside the blade and try its best to cause a jam.

Something to consider: I’m wanting to update the saw to a thin kerf BORK and appropriate blade, is now a good time to do so if I’m going for a new ZCI?


6 replies so far

View jtm's profile


230 posts in 1606 days

#1 posted 02-26-2015 02:23 AM

Did you adjust the leveling screws for the insert?

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6610 posts in 2168 days

#2 posted 02-26-2015 02:27 AM

Dip in the middle won’t effect much unless you are using short pieces that can’t span the insert.. but they are pretty easy to make so whip up a couple new ones so you have some spares.


-- Brad in FL - In Dog I trust... everything else is questionable

View mcg1990's profile


159 posts in 1262 days

#3 posted 02-26-2015 02:28 AM

Yes, but even when I get all 4 corners flush to the table the middle of the insert dips down into the blade. I’m new to the world of table saws, so I’m curious as to whether this could affect the quality/ease of cut somehow.


Thanks Brad. I’ll keep searching for things that could be causing the issues I’m having.

View distrbd's profile


2252 posts in 2416 days

#4 posted 02-26-2015 02:53 AM

Table saw inserts are easy to make:

-- Ken from Ontario, Canada

View Ghidrah's profile


667 posts in 1191 days

#5 posted 02-26-2015 03:48 AM

They are easy to make, if you have an 1/8” gap to either side of the blade and the blade is square, I’m guessing the -0- insert you have may have been used with the 2 outer blades from a dado set. If the bottom of the insert has a taper it may have been used with a bevel cut at some time.

When -0- clearance is a must it behooves one to cut a new insert for the blade/s and angle used. They tend to grow like weeds I must have at least 8, 5 bought 3 made.

-- I meant to do that!

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2725 posts in 1994 days

#6 posted 02-26-2015 05:01 AM

What you have may have started out as a ZCI, but is such no longer. Ghidrah has suggested some possible reasons.

-- I admit to being an adrenaline junky; fortunately, I'm very easily frightened

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