A zero clearance insert is an insert which exactly matches the width of the blade. You can make one by slowly raising the blade through an un-cut insert. The advantage is as aaron says, they prevent things from falling through the hole, and more importantly, they reduce chip-out by ensuring that the piece has support and thus chips won't tend to get pulled away from the board.  Others have mentioned that they're used for two reasons (1) to reduce chipout and (2) to prevent pieces from falling through the hold. Let me add a third: to improve dust collection. When you have a zero-clearance insert, it leaves less room for sawdust to spill onto the table (and directs it down the dust chute). Or at least Fine Woodworking Dining Table Zero that's what I've heard. Share. The zero clearance insert is ready to be installed and rip thin stock without fear of thin strips of wood being sucked into the saw. Even though the zero clearance insert doesn't allow for sawdust to be extracted I still use the vacuum on my table saw as the suction pulls the zero clearance insert down into the saw and keeps the insert firmly in place.  A zero clearance insert is a term used in woodworking for one where you only have a minuscule gap between the side of the blade and the kerf on the insert. When you don't have the normal gap there, it gives more support on things like plywood, where the blade would normally chip the edges as it pushes the teeth down through the material. Installing a ZCI (zero clearance insert) in a table saw is a common task. Not surprisingly, if you frequent woodworking Internet Table Saw Zero Clearance Insert Make forums, you have seen more than one idea on how this is to be done. Unfortunately, some of the advice offered is outright dangerous and gives the folks who actually make ZCI's nightmares. The good news is that installing this useful Fine Woodworking Files Zero accessory correctly - and as safely as possible - is easy.
Feb 15,  · I made one for a Makita bench top saw. I bought a second insert plate and attached an oak zero clearance insert to it. I have not used it too much,so I do not have confidence in its longevity yet. I used one of those not-so-brittle epoxies to attach the wood to the metal. Jun 01,  · Fine Woodworking Jewelry Armoire Zero A zero-clearance insert offers several advantages over the inserts with wide clearances included on most tablesaws. The kerf in a zero-clearance insert is no wider than the blade, which helps reduce www.- : Michael Standish. Nov 17,  · Fine Woodworking Main Menu Subscribe. Discussion Forum. Discussion Forum. Zero clearance insert I have a Griz slx table saw and received several zero clearance inserts for it. However, they don’t fit tightly, yet there is no play in any direction either. Is this a concern? I was able to cut the slot without an issue. Should the zero.

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