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Implications of a warped zero clearance insert?

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Forum topic by mcg1990 posted 02-26-2015 02:11 AM 570 views 0 times favorited 6 replies Add to Favorites Watch
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mcg1990

159 posts in 760 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?

Thanks


6 replies so far

View jtm's profile

jtm

218 posts in 1104 days


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

Did you adjust the leveling screws for the insert?

View MrUnix's profile

MrUnix

4247 posts in 1667 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.

Cheers,
Brad

-- Brad in FL - To be old and wise, you must first be young and stupid

View mcg1990's profile

mcg1990

159 posts in 760 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.

Edit

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

View distrbd's profile

distrbd

2228 posts in 1914 days


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

Table saw inserts are easy to make:
https://www.youtube.com/watch?v=1urUDNYflco
https://www.youtube.com/watch?v=U66tr4r0Pyc

-- Ken from Ontario, Canada

View Ghidrah's profile

Ghidrah

667 posts in 690 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!

View runswithscissors's profile

runswithscissors

2192 posts in 1493 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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